when troubleshooting an lcd panel monitor that is malfunctioning made in china

2023-01-03 12:32:11

Dell Technologies recommends ensuring that the device drivers and BIOS are up to date using the SupportAssist application for optimal video performance and to help resolve common video-related issues.

NOTE: When SupportAssist does not show up in the search results, go to the SupportAssist for PCs and tablets page for information about downloading and installing SupportAssist.

To learn how to manually download and install a device driver such as Chipset, Video card (GPU), and Monitor driver (if required, most monitor drivers are delivered automatically through Windows Update) on your Dell computer, see the Dell knowledge base article How to Download and Install Dell Drivers.

It is essential to verify if the problem is inherent with the monitor, video card (GPU) or video settings on your computer. A straightforward way to identify this is to connect the computer to a known-good external monitor or TV and ensure that the display cable (S-video, VGA, DVI, HDMI, DisplayPort, USB-C, or Thunderbolt 3) is firmly connected to the video port on the computer and the monitor.

If the issue persists on the other monitor it may be due to the video card (GPU) or video settings and not the monitor, go to the step Verify display or video issue in Windows Safe Mode. Else go to the next step.

Performance issues may occur if there is any type of damage that is caused to the display cables or the LCD screen. LCD screen may show that symptoms like LCD screen stops working, work intermittently, color mismatch, flickering, display horizontal or vertical lines if there is damage to the display cables or the LCD screen.

If you do notice a physical damage, contact Dell Technical Support to learn more about repair options that are available in your region. If there is no damage, go to the next step.

Dell monitors provide a self-test feature check (SFTC) and an integrated self-test (BIST) or integrated diagnostic (BID) tool that helps determine if the screen abnormality you are experiencing is an inherent problem with the Dell monitor or with the video card (GPU) and computer settings.

When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade, it is a good practice to isolate the monitor by running a diagnostic test on the Dell monitor.

To learn more about running a diagnostic test on your Dell monitor, see the Dell knowledge base article How to Run a Diagnostic Test on a Dell Monitor.

NOTE: Self-test feature check (SFTC) helps check if the Dell monitor is working normally as a stand-alone device. To check for screen abnormalities such as flickering, distortion, clarity issues, fuzzy or blurry image, horizontal or vertical lines, color fade, and so on, run the integrated self-test (BIST) or integrated diagnostic (BID) test.

NOTE: In certain Dell monitors, the integrated self-test (BIST) or integrated diagnostics (BID) can be run only when one or more video cables are unplugged and the Dell monitor is in self-test mode.

Dell monitors can be reset to factory default settings using the on-screen display (OSD) menu. This can be accessed using the buttons or joystick that is available on the Dell monitor. For step-by-step instructions to reset a Dell monitor to factory default settings, see the User Guide of your Dell monitor at the Dell Manuals website.

Windows Safe Mode allows us to identify if the issue is related to the operating system, video settings, device drivers, or a third-party software. To learn more about how to boot your Dell computer into Safe Mode, see the Dell knowledge base article that is listed below based on the operating system that is installed on your computer:

Windows updates can support your Windows operating system in many ways. Windows updates can solve specific problems, provide protection from malicious attacks, or even add new features to the operating system.

Display settings like brightness, refresh rate, resolution, and power management may affect the performance of your Dell monitor. Changing the display settings can help resolve several types of video issues.

To learn more about changing the brightness, refresh rate and resolution on a Dell computer, see the Dell knowledge base article How to Change the Video Settings or Improve Text in Windows 10.

If you find that the Dell touch-capable monitor is unresponsive to touch or touch works intermittently, you can try some common troubleshooting steps to help fix the issue.

NOTE: Connect the USB upstream cable from your Dell touch-capable monitor to a working USB port on the computer. This is essential for the touch feature to work.

Stress Test can thoroughly diagnose the video card (GPU) on your computer and report any potential hardware problem. Running a stress test on your computer can verify if the hardware components are stable and thus reliable.

System Restore is an integrated Windows tool that is designed to protect and repair the operating system. When something goes wrong with your computer, System Restore must be used before restoring the computer to factory defaults or reinstalling the operating system.

If the diagnostic tests on the Dell monitor and video card (GPU) passed, it is most definitely an issue that is related to software that is installed on your computer. If the above troubleshooting steps did not resolve the issue, to restore your computer to factory defaults as a last resort.

Dell computers are built with a small amount of hard disk space that is reserved for reinstalling your operating system. This method is the easiest way to restore your computer to factory condition. The restoration process deletes all user data from the computer, back up all your files before starting this process.

when troubleshooting an lcd panel monitor that is malfunctioning made in china

Dell recommends ensuring that the device drivers and BIOS are up to date using the SupportAssist application for optimal video performance and to help resolve common video-related issues.

NOTE: When SupportAssist does not show up in the search results, go to the SupportAssist for PCs and tablets page for information about downloading and installing SupportAssist.

We must verify whether the problem is the display screen of the laptop, video card (GPU), or video settings on the computer. A straightforward way to identify this is to connect the laptop to an external monitor or TV.

If the issue persists on the external monitor, it may be an issue with the video card (GPU) or video settings and not the laptop LCD panel. Go to verify display or video issues in Windows Safe Mode. Otherwise, go to the next step.

Performance issues may occur if there is any damage to the LCD screen. The display may stop working, work intermittently, flicker, display horizontal or vertical lines, and so on, if there is damage to the display screen.

If you notice a physical damage, contact Dell Technical Support to learn more about repair options that are available in your region. If there is no damage, go to the next step.

Dell laptops have integrated diagnostic tools that can determine if the screen abnormality is an inherent problem with the LCD screen of the Dell laptop or with the video card (GPU) and computer settings.

When you notice screen abnormalities like flickering, distortion, clarity issues, fuzzy or blurry images, horizontal or vertical lines, color fade, running a diagnostic test on the LCD helps identify if the issue is with the LCD panel.

Press and hold the D key and turn on the computer to enter the LCD built-in self-test (BIST) mode. Continue to hold the D key until you see the entire screen change colors.

If you do not detect any screen abnormalities in the integrated self-test mode, the LCD panel of the laptop is functioning properly. Go to the Update the video card (GPU) driver, monitor driver, and BIOS section.

If you notice any abnormalities in the LCD built-in self-test mode, contact Dell Technical Support to learn more about repair options that are available in your region.

Windows Safe Mode does not load any drivers, startup applications, third-party services. This will help us identify if the issue is related to the operating system, video settings, device drivers, or third-party software. To learn how to boot your computer into Safe Mode, see the Dell knowledge base article below based on the operating system that is installed on the computer:

Windows updates can support your Windows operating system in many ways. Windows updates can solve specific problems, provide security patches and protection from malicious attacks, or even add new features to the operating system.

Display settings like brightness, refresh rate, resolution, and power management may affect the performance of the LCD screen on your Dell laptop. Changing or adjusting the display settings can help resolve several types of video issues.

NOTE: Depending on the model of the Dell laptop, the shortcut keys to adjust or change the brightness may differ. See the User Guide or User Manual of your Dell laptop for model-specific information.

If you find that the Dell laptop is unresponsive to touch, touch stops working entirely, or other touch-related issues, you can try some common troubleshooting steps to help fix the touch-related issue.

System Restore is an integrated Windows tool that is designed to protect and repair the operating system. When something goes wrong with your computer, System Restore must be used before you try to restore the operating system to factory default settings.

If the diagnostic tests on the LCD panel and the video card (GPU) passed, it is most definitely an issue that is related to software that is installed on the computer. If the above troubleshooting steps did not resolve the issue, you may try to restore the computer to factory default settings as a last resort.

WARNING: Restoring or resetting the computer to factory default settings will erase all personal data on the computer. Back up all important data like documents, images, music files, spreadsheets, videos to an external hard drive or a cloud-based backup like Microsoft OneDrive.

Dell computers are built with a small amount of hard disk space that is reserved for reinstalling the operating system. This method is the easiest way to restore the computer to factory condition. The restoration process deletes all user data from the computer, so be sure to back up all your files before starting this process.

when troubleshooting an lcd panel monitor that is malfunctioning made in china

Troubleshooting CRTs versus LCDs begins with similar steps, but diverges due to the differing natures of the two display types. The first troubleshooting steps are similar for either display type: power down the system and display and then power them back up; make sure the power cable is connected and that the outlet has power; verify that the signal cable is connected firmly to both video adapter and display and that there are no bent pins; verify that the video adapter is configured properly for the display; try the problem display on a known-good system, or try a known-good display on the problem system; and so on. Once you"ve tried the "obvious" troubleshooting steps, if the problem persists, the next step you take depends on the type of display. The following sections cover basic troubleshooting for CRTs and LCDs.

CRTs seldom fail outright without obvious signs, such as a loud snap or a strong odor of burning electrical components. Most CRT problems are really problems with the power, video adapter, cable, or hardware/software settings. To eliminate the CRT as a possible cause, connect the suspect CRT to a known-good system, or connect a known-good display to the suspect system. It is worth noting, that older CRTs eventually wear out, and starts dimming. Common signs of a weak CRT are a dim picture, dysfunctional brightness and/or color controls, image smearing at high brightness, and in color CRTs, a tint towards a single color (Red Green Blue)

If the CRT is the problem, it is often not worth repairing. If the CRT is out of warranty, parts and labor may cost more than buying a new CRT, which also gives you better specs and a warranty. About the only CRTs we"d even consider repairing out-of-warranty are high-end 21" or larger models, and even there the economics are dubious.

Even if the CRT is in warranty, the shipping costs may exceed the value of the CRT. For example, shipping a CRT both ways can easily cost $75 or more. If that CRT is a year-old 17" model, you"re probably better off spending $100 to $200 for a new 17" or 19" CRT than paying $75 in shipping to have the old one repaired. CRTs have many components, all of which age together. Fixing one is no guarantee that another won"t fail shortly. In fact, that happens more often than not in our experience.

Never disassemble a CRT. At best, you may destroy the CRT. At worst, it may destroy you. Like televisions, CRTs use extremely high voltages internally, and have large capacitors that store that energy for days or even weeks after the CRT is unplugged. Robert once literally burned a screwdriver in half when working inside a color television that had been unplugged for several days. Also, the large, fragile tube may implode, scattering glass fragments like a hand grenade. People who repair CRTs and televisions for a living treat them with great respect, and so should you. If you must repair a CRT, take it to someone who knows what they are doing. You have been warned.

Check the obvious things first. Verify that the CRT is plugged in (and that the receptacle has power), the video cable is connected to the video card, the computer and CRT are turned on, and the brightness and contrast settings are set to the middle of their range. If none of these steps solves the problem, your CRT, video card, or video cable may be bad. Check the suspect CRT on a known-good system or a known-good CRT on the problem system.

CRTs contain multiple filaments, which can be broken, or gas may have leaked into the vacuum inside the CRT. CRTs damaged this way are unrepairable without specialist equipment. With the display open. check if all three filaments are glowing bright orange. Excessive redness or purple arcing signifies gas has leaked in. There may also be an internal short inside the CRT, which is also unfixable without specialist equipment.

If you have ACPI or APM power management enabled, it may be causing the problem. Some systems simply refuse to wake up once power management puts them to sleep. We have seen such systems survive a hardware reset without restoring power to the CRT. To verify this problem, turn off power to the system and CRT and then turn them back on. If the CRT then displays an image, check the power management settings in your BIOS and operating system and disable them if necessary.

The horizontal and/or vertical deflection system has failed. The CRT tube itself is fine, but the circuitry driving the tube has failed. Replace the display.

This is a hardware problem with one of the electron guns. Replace the CRT. This problem may also manifest as a strong color cast during normal operation that is not correctable using the normal color balance controls.

Catastrophic CRT failure is imminent. The noises are caused by high-voltage arcing, and the smell is caused by burning insulation. Unplug the CRT from the wall before it catches fire, literally.

There are two likely causes. First, you may be driving the CRT beyond its design limits. Some CRTs display a usable image at resolutions and/or refresh rates higher than they are designed to use, but under such abuse the expected life of the CRT is shortened dramatically, perhaps to minutes. To correct this problem, change video settings to values that are within the CRT"s design specifications. Second, the power receptacle may be supplying voltage lower than the CRT requires. To correct this problem, connect the CRT to a different circuit or to a UPS or power conditioner that supplies standard voltage regardless of input voltage.

This is usually a minor hardware problem. The most likely cause is that the signal cable is not connected tightly to the CRT and/or video card, causing some pins to make contact intermittently or not at all. Verify that no pins are loose, bent, or missing on the cable or the connectors on the CRT and video card, and then tighten the cable at both ends, If that doesn"t fix the problem, open the computer, remove the video card, and reseat it fully.

In elderly systems, another possible cause is that some hardware DVD decoder cards "steal" one color (usually magenta) and use it to map the DVD video signal onto the standard video signal. Remove the DVD decoder card. If your video adapter includes hardware DVD support, or if you are upgrading to such an adapter, you don"t need a DVD decoder card.

The most likely cause is that the CRT is receiving inadequate power. Connect it to a different circuit or to a backup power supply that provides correct voltage regardless of fluctuations in mains voltage.

The most likely cause is that the refresh rate is set too low. Change the refresh rate to at least 75 Hz. Flicker also results from interaction with fluorescent lights, which operate on 60 Hz AC and can heterodyne visually with the CRT. This can occur at 60 Hz (which is far too low a refresh rate anyway), but can also occur at 120 Hz. If you"re running at 120 Hz refresh and experience flicker, either use incandescent lighting or reset the refresh rate to something other than 120 Hz.

The video card settings are likely outside the range supported by the CRT, particularly if you have just installed the CRT or have just changed video settings. To verify this, restart the system in Safe Mode (press F8 during boot to display the Windows boot menu and choose Safe Mode). If the system displays a VGA image properly, change your display settings to something supported by the CRT.

Most modern CRTs can display signals at many different scan frequencies, but this doesn"t mean that the CRT will necessarily automatically display different signals full-screen and properly aligned. Use the CRT controls to adjust the size and alignment of the image.

Depending on the CRT, video card, and video settings, this may be normal behavior, adjustable using the CRT controls. If the distortion is beyond the ability of the controls to correct, the problem may be with the video card, the CRT, or the driver. First try changing video settings. If the problem persists at several settings, move that CRT to a different system (or use a different video card) to determine whether the problem is caused by the CRT or video card. Repair or replace the faulty component.

This is usually caused by RF interference from another electrical or electronic device, particularly one that contains a motor. Make sure such devices are at least three feet from the CRT. Note that such interference can sometimes penetrate typical residential and office walls, so if the CRT is close to a wall, check the other side. Such image problems can also be caused by interference carried by the power line or by voltage variations in the AC power supply. To eliminate interference, plug the CRT into a surge protector. Better still, plug it into a UPS or power conditioner that supplies clean power at a constant voltage.

This problem may also be caused by using a video cable that is too long or of poor quality or by using a poor-quality KVM switch (keyboard/video/mouse switch). Manual KVM switches are particularly problematic.

The CRT may need to be degaussed. A CRT that sits in one position for months or years can be affected even by the earth"s very weak magnetic field, causing distortion and other display problems. Exposing a CRT to a strong magnetic field, such as unshielded speakers, can cause more extreme image problems. Many modern CRTs degauss themselves automatically each time you cycle the power, but some have a manual degauss button that you must remember to use. If your CRT has a manual degauss button, use it every month or two. The degaussing circuitry in some CRTs has limited power. We have seen CRTs that were accidentally exposed to strong magnetic fields, resulting in a badly distorted image. Built-in degaussing did little or nothing. In that case, you can sometimes fix the problem by using a separate degaussing coil, available at RadioShack and similar stores for a few dollars. We have, however, seen CRTs that were so badly "magnet burned" that even a standalone degaussing coil could not completely eliminate the problem. The moral is to keep magnets away from your CRT, including those in speakers that are not video-shielded.

An incorrect yoke may have been attached to the CRT. Unless you have a lot of spare time on your hands, this is usually not worth fixing. Replace the display.

You may have a weak picture tube. Without specialist equipment, this is usually unfixable. You could try a CRT rejuvenator as a last resort, but this may fix or kill your CRT permanently.

If your LCD displays no image at all and you are certain that it is receiving power and video signal, first adjust the brightness and contrast settings to higher values. If that doesn"t work, turn off the system and LCD, disconnect the LCD signal cable from the computer, and turn on the LCD by itself. It should display some sort of initialization screen, if only perhaps a "No video signal" message. If nothing lights up and no message is displayed, contact technical support for your LCD manufacturer. If your LCD supports multiple inputs, you may need to press a button to cycle through the inputs and set it to the correct one.

Unlike CRTs, where increasing the refresh rate always reduces flicker, LCDs have an optimal refresh rate that may be lower than the highest refresh rate supported. For example, a 17" LCD operating in analog mode may support 60 Hz and 75 Hz refresh. Although it sounds counterintuitive to anyone whose experience has been with CRTs, reducing the refresh rate from 75 Hz to 60 Hz may improve image stability. Check the manual to determine the optimum refresh rate for your LCD, and set your video adapter to use that rate.

First, try setting the optimal refresh rate as described above. If that doesn"t solve the problem and you are using an analog interface, there are several possible causes, most of which are due to poor synchronization between the video adapter clock and the display clock, or to phase problems. If your LCD has an auto-adjust, auto-setup, or auto-synchronize option, try using that first. If not, try adjusting the phase and/or clock settings manually until you have a usable image. If you are using an extension or longer than standard video cable, try connecting the standard video cable that was supplied with the display. Long analog video cables exacerbate sync problems. Also, if you are using a KVM switch, particularly a manual model, try instead connecting the LCD directly to the video adapter. Many LCDs are difficult or impossible to synchronize if you use a KVM switch. If you are unable to achieve proper synchronization, try connecting the LCD to a different computer. If you are unable to achieve synchronization on the second computer, the LCD may be defective. Finally, note that some models of video adapter simply don"t function well with some models of LCD.

If the screen is displaying a full, stable image, but that image is of poor quality, first verify that the display is not connected through a KVM switch or using an extension cable. If so, connect the display directly to the video adapter using the standard cable. If that is already the case, adjust the brightness, contrast, and focus controls. If you are unable to get a proper image using these controls, the problem is most likely a clock or phase mismatch, which you can cure by taking the steps described in the preceding item.

The best way to adjust clock and phase is to use auto-adjust first. Check the utility and driver CD that came with the monitor. It may have a wizard or at least the appropriate background screens to use while adjusting phase and clock settings. If not, go to the Windows Start menu and select Shutdown. When the screen goes gray and the Windows Shutdown dialog appears, leave that dialog onscreen, but ignore it. Use the gray screen to adjust clock and phase manually. Any problems with clock and phase and any changes you make to the clock and phase settings are clearly evident on the gray screen.

Always adjust clock first. Clock is usually not a problem if you have used the auto-adjust feature of your monitor, but if you do have clock problems they will be evident as large vertical bars on your screen. Tweak the clock setting until those bars disappear. Then adjust phase. Phase problems are evident as thin black lines running horizontally across the screen. Adjust phase until the lines disappear or are minimized.

Not all analog video cards synchronize perfectly with flat panels. The gray Shutdown screen exaggerates the problem, so don"t worry if very tiny movements are visible after you"ve adjusted clock and phase as well as possible. After you"ve set the clock and phase controls for the best image possible on the gray screen, cancel Shutdown and the image should be optimized.

Your video card is supplying a video signal at a bandwidth that is above or below the ability of your LCD to display. Reset your video parameters to be within the range supported by the LCD. If necessary, temporarily connect a different display or start Windows in Safe Mode and choose standard VGA in order to change video settings.

This occurs when you run an LCD at other than its native resolution. For example, if you have a 19" LCD with native 1280x1024 resolution but have your display adapter set to 1024x768, your LCD attempts to display those 1024x768 pixels at full screen size, which physically corresponds to 1280x1024 pixels. The pixel extrapolation needed to fill the screen with the smaller image results in artifacts such as blocky or poorly rendered text, jaggy lines, and so on. Either set your video adapter to display the native resolution of the LCD, or set your LCD to display the lower-resolution image without stretching the display (a feature sometimes referred to as display expansion), so that pixels are displayed 1:1, which results in the lower resolution using less than the entire screen.

This is a characteristic of LCDs, particularly older and inexpensive models, caused by defective pixels. Manufacturers set a threshold number below which they consider a display acceptable. That number varies with the manufacturer, the model, and the size of the display, but is typically in the range of 5 to 10 pixels. (Better LCDs nowadays usually have zero dead pixels.) Nothing can be done to fix defective pixels. Manufacturers will not replace LCDs under warranty unless the number of defective pixels exceeds the threshold number.

Some people claim that leaving the unit powered off for a day or two will "erase" a persistent after-image. Others suggest leaving a neutral gray screen (like the one used for phase adjustment) up on the screen to "equalize" the display. I dunno. FWIW, I"ve seen this problem on older Samsung panels but never on the Sony or NEC/LaCie panels I use.

Again, this is a characteristic of LCDs, particularly older and inexpensive models. The after-image occurs when the display has had the same image in one place for a long time. The after-image may persist even after you turn the display off.

Transistor-based pixels in an LCD respond more slowly than the phosphors in a CRT. The least-expensive LCDs exhibit this problem even with slow image movement, as when you drag a window. Better LCDs handle moderately fast image movement without ghosting, but exhibit the problem on fast-motion video. The best LCDs handle even fast-motion video and 3D gaming very well. The only solution to this problem is to upgrade to an LCD with faster response time.

Use the brightness control to increase image brightness. If you have set brightness to maximum and the image is still too dim, contact the display manufacturer. The CCRTs used to backlight the screen have a finite lifetime and may begin to dim as they near the end of their life.

If one or more horizontal and/or vertical lines appear on the display, first power-reset the computer and display. If the lines persist, run the auto-setup function of your display. If that does not solve the problem, power the system and display down, remove the video cable, and verify that the video plugs and jacks on both computer and display ends do not have broken or bent pins. Even if all appears correct, try a different video cable. If the problem persists, contact the display manufacturer.

when troubleshooting an lcd panel monitor that is malfunctioning made in china

A display issue is an anomalous condition that prevents the screen from displaying a normal image. There are numerous causes for display issues, and diagnosis is a process of elimination: rule out the causes that can"t be the problem and narrow down on the one cause possible. The first step in diagnosing display issues is to identify whether or not it occurs on all monitors, only your monitor, or a certain type of monitor such as LCD monitors or CRT monitors. If it only occurs on your monitor or one specific type of monitor then you know where to start looking. Next, check if there"s any distortion in your image: if there"s none then check if there are any color patches on the screen; if they"re present then check if they fade when you look at them from a different.

Pixcel Technologies is a leading display service provider that specializes in repairs, maintenance, and service of all types of computer displays. Pixcel can help you detect any issues with your computer or monitor by providing high-quality diagnostic services for a variety of issues. Display Issues can be frustrating to deal with. But before you go spending hundreds on a new computer, you should try some of the solutions below and see if they work for you.

The first thing you should try is checking your device’s display settings. While this may not seem like an obvious solution, it is often the easiest way to fix display issues. When your computer boots up, make sure it"s configured to use the right resolution, color depth, refresh rate, and more. If you"re still experiencing problems after tweaking these settings, proceed to the next step. Display issues can be a hindering factor for your work. But, by taking some preventive measures, it is easy to eliminate the issue. There are many reasons why you might be experiencing display issues. Some common ones, which we will focus on in this blog are:

1. Defective LCD cable or bad video card - displays are built on screens that are controlled by a video card, so this is one of the most common causes. If you put your laptop screen in an area where there is high electromagnetic interference, such as near wireless signals, then the screen could malfunction. This can also happen if you spilled liquid on your laptop and didn"t dry it properly before turning it back on.

Display Issues in laptops usually happen due to hardware or software-related problems. If the hardware fails, then it will be difficult to identify the problem, but if you are facing these issues due to software faults, then you can troubleshoot them by following a few simple steps.

Display issues occur when your laptop is not able to produce the desired quality of display. The display is also sometimes not visible because of the brightness, or it might happen because of a problem in the software. Some of the most common problems that arise with laptops are dimming displays and poor quality displays. Dimming displays can be fixed by manipulating the settings for new windows, but poor-quality displays cannot be changed by adjusting these settings. The recent trend has been that users are reporting more and more problems with their laptop’s display. This is because there has been a rise in complaints about these issues online, which leads to an increase in searches for solutions to these problems as well.

Display issues are a common problem for users. Sometimes, it"s not always easy to troubleshoot these problems by oneself. Some common display issues can be detected by the following methods:

2. If you see horizontal or vertical lines on the screen wallpaper, then this means that your computer graphics card might be damaged. And you need to contact your support team and get them to repair or replace it immediately because graphics cards often burn out quickly due to overheating.

3. If a picture on your screen is magnified, then this means that there’s something wrong with your webcam lens or the brightness. There are various causes for display issues. This blog will focus on the most common issues, their symptoms, and solutions.

The solution: Press Windows key + D to show the desktop and then close all applications on your computer one by one as you press Alt + F4 for each one until you see your desktop again.

Many display issues can occur on your computer. They often happen because the settings on the computer are incorrect or because the hardware is not set up correctly. Some of these problems will only affect one user whereas others will affect all users in a workplace. When people are using a computer to display text and images but see them differently from other people, it may be an issue with their monitor"s color settings or its physical alignment. Users may also have faulty video card drivers or installed applications that interfere with their display settings. A symptom of a problem with an LCD monitor could include blurred text, black screens, flickering images, colored boxes on the screen, and more.

Some people can"t fix the problem themselves. These problems are usually caused by malware or virus attacks. A common solution to fix these issues is to use an antivirus, but in some cases that might not work because of the complexity of the malware programs. For this reason, it is a good idea to contact a professional that can help with your computer as soon as you notice these problems.

Pixcel Technologies is a company that specializes in the production of innovative display solutions technologies. Developing new, innovative displays solutions has always been Pixcel Technologies" goal. We has come up with an alternative solution of going to your laptop remotely. This is called remote support, the idea being that you get to chat with our engineers no matter where you are in the world and they will be able to help solve any display issues that arise from your laptop.

when troubleshooting an lcd panel monitor that is malfunctioning made in china

Your troubleshooting a malfunctioning notebook computer. Nothing appears on the LCD display when the system is powered on. When you connect an external monitor to the system, the windows desktop is displayed properly on the monitor. What could because of this problem? (choose two)

You have a notebook computer with a built-in wireless network card. One day it stops working. Because the network card is integrated onto the motherboard, you do not want to replace the entire motherboard. What can you use to connect to the wireless network? (Select two)

You have just purchased a new laptop with built-in wireless, Bluetooth, and infrared capabilities provided by many PCIe card. When you go into windows, you do not see the Bluetooth adapter listed in the device manager. What should you do first?

Whenever users has called to complain about her notebook computer. She reports that it displayed a message indicating the battery was low, then it shut down by itself even though it was plugged into a wall outlet. What should you check first?

After arriving in a new city today, a traveling sales member calls you stating that his wireless connection no longer works. Yes check the wireless configuration and he knows it to be correct because it was working yesterday. What should he do first?

Well using the touchpad, you notice that the mouse is not responding very well, making it difficult to correctly move the mouse around the screen. How can you fix this problem?

You have been told to replace the hard drive on the laptop computer that has a drive bay assembly from the outside of the computer. Which of the following should you do after powering down the system? (Select two)– Remove the battery

Your troubleshooting a malfunctioning notebook computer system. The user has indicated that the screen suddenly became dark and difficult to read downloading a large file through his wireless network card while the system was plugged in at his desk. You checked the system and determine that the backlight has stopped working. Which of the following could be the cause? (Select two)

Your troubleshooting a malfunctioning LED display on notebook computer system. An external monitor correctly displays the output from the notebook. Which of the following could be the cause?

when troubleshooting an lcd panel monitor that is malfunctioning made in china

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Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The Display & Video 360 support team can help you with questions, but cannot resolve this issue until you’ve made adjustments to your creative. Contact Display & Video 360 support by clicking the help icon

The ad is blank or does not load. Blank creatives are often caused by geo-targeting, user targeting, ad verification services, and inactive ads in your ad server. It"s your responsibility to make sure all creatives load and work as expected.

Make sure the creative is viewable to all users on all impressions. This may require having your ad server or verification service deliver a backup ad in the event of ad blocking.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The clickthrough URL doesn"t work properly. Common issues include malformed clickthrough URLs, invalid click redirect URLs, problems with macro replacement in URLs, or non-working/non-existent landing pages. Make sure your ads click through to working landing pages.

This creative doesn"t have a valid landing page. This creative must include at least one exit to a landing page that loads without error, is accessible in all locations, and is crawlable by Google.

All creatives served by Display & Video 360 must contain a functional click-through URL that leads the user to a working landing page. Your landing page must work properly for all locations, regardless of where you"re targeting your ad. Check your landing page on various browsers and devices to make sure that it always links to a working website or app.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

Gun-related content includes functional devices that appear to discharge a projectile at high velocity, whether for sport, self-defense, or combat (including sporting or recreational guns that can cause serious harm if misused, or that appear to be real guns) as well as any part or component that"s necessary to the function of a gun. Common examples include handguns, rifles, shotguns, hunting guns, functioning antique guns, airsoft guns, paintball guns, bb guns, silencers, ammunition, or ammunition clips or belts.

All creatives and landing pages served by Display & Video 360 are prohibited from promoting guns, gun parts, or gun-related content. Remove gun-related content from the creative and any landing pages it links to.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

Dangerous knives include knives that are designed or promoted (in modern-day usage) as products that can be used to injure an opponent in sport, self defense, or combat, or any knife design that provides a confrontational advantage (including disguised appearance or assisted-opening mechanism). Common examples include switchblades, fighting knives, sword-canes, balisongs, military knives, push daggers, or throwing axes.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

All creatives and landing pages served by Display & Video 360 are prohibited from promoting tobacco products, services, and related equipment including those which are designed to simulate smoking. Remove all tobacco-related content from the creative and any landing pages it links to.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

Check if the creative was just uploaded or created. If it was recently created, the tag may not be created and validated yet. This should change to valid after a few hours. If it has been more than a few hours, follow the steps below.

Check if it"s a tracking placement. If the creative is a 1x1 and only meant for tracking, you can ignore this rejection. Creatives that are 1x1 tracking placements will be always rejected in Display & Video 360, because they aren"t meant to serve alone.

Make sure there"s at least one video asset in your creatives that"s not a QuickTime (.mov) format. The .mov format is supported, but requires at least one other video type (for example, .mp4).

For Campaign Manager 360-hosted and third-party hosted videos, check if there are videos with different durations (15s and 30s) included in rotation, or if the primary and default assets are different lengths. Exchanges require that each line item has video assets that are approximately the same length (within 10%) in rotation.

The creative is rejected because it"s synced from a Campaign Manager 360 placement with in-stream redirect creatives, which are no longer supported in Display & Video 360.

Weapon-related content includes any product that"s designed to (in modern-day usage) injure an opponent in sport, self-defense, or combat. Common examples include throwing stars, brass knuckles, tasers, or pepper spray.

All creatives and landing pages served by Display & Video 360 are prohibited from promoting weapons or weapon-related content. Remove all weapon-related content from the creative and any landing pages it links to.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page contains an abusive experience. Common examples include: auto-redirects to landing page without user action, misleads or tricks the user into interacting, resembles system or site warnings or error messages, simulates messages, dialog boxes or request notifications, and so on.

All creatives and landing pages served by Display & Video 360 must not contain experiences designed to be misleading. Learn more about what"s considered abusive

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The clickthrough URL leads to a landing page that could not be crawled. Common crawl errors include: robots.txt failure, DNS errors, or server errors.

At least one landing page must be crawlable if your creative will run on Ad Manager. Ad Manager uses the AdsBot-Google and Googlebot crawlers to read and ensure your landing page complies with Ad Manager policies.

To allow Google to crawl your page, add User-agent: AdsBot-Google and User-agent: Googlebot to your domain’s robots.txt. You can also use Google Search Console to see how to make your page accessible to Google.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

If the landing page is not crawlable, work with the website administrator to add User-agent: AdsBot-Google and User-agent: Googlebot to your domain’s robots.txt and verify that your landing page is otherwise crawlable.

If Display & Video 360 fails to detect the landing page, the website provided in your Display & Video 360 advertiser"s Basic Details page is used instead. Make sure this page is crawlable.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page is difficult to interact with. Common issues include landing pages that disable browser navigational functions, sites with pop-ups or interstitial ads that interfere with the user"s ability to see the content requested, or ads that look like software download buttons, official system warnings, or webpage features like menus, search results, or other site content.

Your site should not require registration or sign-in to view site content (for example, when using a Facebook page as your landing page, make sure the page is public.)

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page contains content that enables dishonest behavior including products or services that help users to mislead others and products or services that enable a user to gain unauthorized access (or make unauthorized changes) to systems, devices, or property.

All creatives and landing pages served by Display & Video 360 are prohibited from containing content that enables dishonest behavior including products or services that help users to mislead others and products or services that enable a user to gain unauthorized access (or make unauthorized changes) to systems, devices, or property.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

Expandable creatives may not expand to more than twice the width or three times the height of the creative"s base dimensions, except when displaying certain IAB formats or formats approved by Google. Each ad technology vendor’s cross-site scripting file is required for iframe ad calls to be functional. Learn more about publisher-side iframe buster files.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

All expandable creatives on Ad Manager must correctly display creative content, function as expected, cannot have any broken assets. Edit the creative to make sure it renders and expands properly.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page contains content that"s malicious or attempts to trick or circumvent our creative review processes. Examples include cloaking, use of dynamic DNS to switch page or ad content, or manipulating ad or text in order to bypass automated system checks.

All creatives and landing pages served by Display & Video 360 are prohibited from engaging in practices that attempt to circumvent or interfere with Google’s system controls or quality processes.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page contains offensive or inappropriate content which may include violence and self-harm, harassment, racism, hatred and intolerance, and capitalizing on sensitive events or threatened species.

Common examples of offensive or inappropriate content include hatred and intolerance (including sexual, religious and political intolerance), violence and self-harm, harassment and intimidation, exploitation, racism, shocking content, capitalizing on sensitive events, or capitalizing on threatened or extinct species.

All creatives and landing pages served by Display & Video 360 must be designated as "family safe" to ensure they can potentially be shown to all appropriate audiences. Products that are considered to have "non-family safe" status are prohibited from serving by Display & Video 360.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Edit the creative to declare any declarable technology vendors. Use Chrome Developer Tools to check for all the calls made from your ad within a browser.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad"s declared click-through URL does not match the actual landing page URL. Make sure your ads declare click-through URLs that match the actual landing page URLs.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

You can verify what URL(s) Display & Video 360 has declared on your behalf for a given creative by checking the Creative status tab of the creative and reviewing the Detected landing page URLs in the Display & Video 360 review section.

If the URL that’s flagged alongside the creative rejection is from one of the following locations, correct the URL within the appropriate ad server so that it matches the actual destination URL of your creative:

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

If you"re using a vendor that"s not approved to run on Ad Manager, remove calls made to unapproved technology vendors. Make sure the creative calls certified technology vendors in all environments (for example, in a mobile browser, in a mobile app, or in a desktop browser.) Learn how to troubleshoot rejected calls using Chrome Developer Tools

Alternatively, you can request certification for an unapproved technology vendor by getting in touch with support with contact information for the technology vendor.

If you do not believe any of your vendors are disapproved for use on Ad Manager, verify whether the URL shown in the creative’s Creative status tab belongs to any of the vendors that you’re using.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad contains non-secure HTTP calls. All creatives served outside of China must be 100% SSL-compliant across all calls contained within the creative, including assets, fourth parties, and other trackers.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

If you"re using creative assets or fourth parties that are not 100% SSL-compliant, correct these assets or have the fourth party provide SSL-only assets. Learn how to troubleshoot rejected calls using Chrome Developer Tools

If you do not recognize the non-secure assets, verify whether the URL(s) shown in the creative"s Creative status tab belong to any of the vendors that you’re using.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad"s landing page does not adhere to our landing page quality guidelines. Common landing page quality violations include low value content, non-working sites, or parked domains.

Landing pages should provide a quality user experience. All promotions should be clear, professional in appearance, and lead users to content that is relevant, useful, and easy to interact with. Landing pages cannot lead to an email address or file, such as image, audio, video, or document, that require an additional application to open. Sites should load quickly and properly without errors or error pages that display a status code beginning with a 4 or a 5 (such as a 404 error, page not found). All landing page guidelines are outlined in the Google Ads Policy Center.

All creatives served by Display & Video 360 must click through to landing pages that comply with Google policies. Improve the quality of the creative"s landing page experience, or use a different landing page that meets these requirements.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad"s download size exceeds the 5 MB limit. The total file size of all creative files downloaded by a person"s browser when an ad serves is limited to a maximum of 5 MB.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

All non-video creatives on Ad Manager must comply with the download limit of 5 MB. Exceeding this limit can negatively impact the performance of the Google Marketing Platform service and users" devices.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad has more than 100 HTTP/HTTPS (fourth-party) calls. This rejection does not apply to VAST video creatives. Exceeding this limit can negatively impact the performance of the ad on mobile devices.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Remove unnecessary calls or file loads to reduce them to 100 or fewer. Make sure to check how many HTTP calls the creative makes in each environment. For example, some creatives may make more HTTP calls in mobile browsers on Android or iOS than they do in desktop browsers.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Edit the creative and remove unnecessary cookie dropping. Make sure to check how many cookies the creative drops in all environments. For example, some creatives may drop more cookies in mobile browsers on Android or iOS than they do in desktop browsers. For each environment, the creative can drop no more than 25 cookies.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

All creatives served by Display & Video 360 must correctly display creative content, function as expected, and be void of any broken assets. Ensure your ad and landing page work properly for all locations, regardless of where you"re targeting your ad.

The creative doesn’t load a blank landing page after click. For example, this could happen if the landing page restricts access to certain countries or locations.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page contains misleading claims or information. Common issues include providing scientifically impossible claims, offering guaranteed results without a refund policy, or showing testimonials that claim specific results without a link to third-party verification.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

The ad or landing page is missing important information such as the charges expected to be incurred by the user. Common misleading practices include failure to disclose all charges the user will incur, failure to close tax-exempt status and charity number if your site solicits tax-exempt donations, or promoting a service or product (such as an app) as free when it is not.

This rejection applies to Google Ad Manager and may apply to other exchanges. Learn more about this rejection on Ad Manager. You can contact individual exchanges to learn more about their policies.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

When promoting financial services and products, you must comply with state and local regulations for any region that your ads target — for example, include specific disclosures required by local law. Refer to our non-exhaustive list of country-specific requirements for more information.

All creatives and landing pages served by Display & Video 360 must comply with local regulations and provide required disclosures. Learn more about required disclosures

If the problem is in the creative itself, remove the content and/or add a link to the required disclosures. If the problem is with the landing page, add the required disclosures to the landing page. If you can’t fix the landing page, update the creative with a new landing page that complies with this policy.

Once you’ve resolved this issue, save the creative. The “Review started” time will be updated in the Creative status tab and the creative review process will restart.

Content related to initial coin offerings, cryptocurrency token sales, or otherwise promoting the purchase, sale, or trade of cryptocurrencies or related products, except where explicitly allowed, or

Cryptocurrency exchanges may only be advertised if the advertiser is a licensed provide

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