when troubleshooting an lcd panel monitor that is malfunctioning for sale

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.

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.
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.
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.
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 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.

Your troubleshooting a malfunctioning notebook computer system. The user has indicated that the screen is always dark and difficult to read even while the system is plugged into a wall outlet. You check the system and determining the back light isn’t working. Which of the following could be the cause
Your laptop carrying case is designed for a 15 inch laptop, yet you think you can squeeze were 16 inch laptop into it. Before slipping the laptop into the case, what should you do?
You’re attempting to diagnose a problem with the computer. The user reports that it displayed a message indicating that the battery was low, then it shut down by itself even though it was plugged into a wall outlet. You check the AC adapter and found that the LED light is lit when plugged into a wall outlet. What should you check next?
A user is trying to log into Windows on her notebook computer. She enters the correct password for her user account, but the system won’t let her authenticate, claiming the wrong password has been entered. What’s causing the problem?
Your troubleshooting a notebook system that uses a digitizer pad stylist for you input. The user has complained that the digitizer pad registers stylus tabs about what inch to the right of where the Actually occur. How can you fix this problem?
Your troubleshooting a malfunctioning LCD display on the computer system. After confirming the notebook is receiving AC power, you plug in an external monitor. The external monitor does not display the output from the notebook after passing the FN key to toggle the display. Which of the following could be the cause
Your manager has been using the same laptop computer without error for four years. Suddenly, the computer will not start and run correctly. What should you do to isolate the problem?
Six months ago, you purchased a new laptop. Since then, you notice that the battery life has been steadily going down. When it was new, and full charge lasted about three hours. Now your lucky to get two hours before the battery charge level drops the 5%. What should be your first step to correct the problem?
Your troubleshooting a malfunctioning notebook computer. Nothing appears on the LCD display when the system is powered on. When you connect and external monitor to the system, the Windows desktop is displayed properly on the monitor. What could be causing the problem? (Select two)
A user in sales cannot get his laptop to display through a projector. He sees the screen output on the built in LCD display, but the video is not being seen on the projector what should you do first?– Replace the liquid crystal display
Your troubleshooting a malfunctioning computer. Nothing appears on the LCD display when the system is powered on. What is the first thing you should do?
Your lobby receptionist uses a laptop computer to complete her day to day tasks. You are concerned about the security of her system. What should you do? (Select two)
For troubleshooting a malfunctioning notebook computer system. The user has indicated that the screen suddenly became dark and difficult to read while he was downloading a large file through his wireless network card while this is the most plugged in at his desk. You check the system and determined that the backlight has stopped working. Which of the following could be the cause? (Select two)
All members of the sales team using laptop computers while traveling to connect to the Internet. Each laptop has a built-in wireless network card that supports 802.11b/g/n. you trained each user to be able to create a new wireless connection in order to connect to a wireless networks in the airports and at hotels. You get a call from one user stating that her wireless connection to longer works. She has checked the wireless configuration and she knows it to be correct because of their sales people at the same location are able to connect. What should you do first?

A monitor is connected to the computer but does not display anything. Use the steps in this document to resolve this issue or to determine if the monitor is defective.
With the monitor plugged in, press the power button on the monitor. There should be a power indicator light located on the monitor case. What happens to the light?
If power light remains off when you press the power button, either the monitor is not receiving power or the monitor is defective. Check all of the following items before attempting to service or replace the monitor:
If a message appears on the monitor, the display panel is working and the problem is related to the video signal. For further troubleshooting steps, see Message about No Signal, Signal out of Range, Sleep, or Power Save.
Check for bent or broken connector pins or broken pins that have become lodged inside the holes of the video connector on the computer. With the monitor and computer off, straighten bent pins with a small metal tube, like the tip of an empty mechanical pencil or the tip of a retracted pen. If any of the pins have broken off from the cable and are stuck in the small holes of the video connector (on the computer), remove the broken pins using a metal sewing pin (or similar metal pin that is thin and has a point).
Connect another video cable to the computer and monitor. If possible use a different cable. For example, if your monitor has an HDMI connector and a DVI connector, use the other cable type if possible. If not, use a new cable of the same type.
If the monitor remains blank, connect the monitor to another computer using a different cable to determine if the monitor is bad. Skip to the Step connect the monitor to another computer.
Find the native display resolution for your monitor in the User Manual or in the product specifications for the monitor model. If you are unable to find the native display resolution for your monitor model, temporarily use 1024x768 for troubleshooting purposes.
If you are satisfied with the new display settings, click Yes on the Monitor Settings windows. If you are not satisfied or if the screen just goes black, wait: Windows sets the screen back to the way it was before. Try another setting until you find a display configuration that is compatible with the monitor and meets your needs.
If the native resolution is not available, download and install updated video driver software for your computer. Updating the video driver software can add more resolutions (graphics modes).
If the monitor works, the video hardware on the original computer is likely to be the source of the problems. You can try connecting the original computer to another monitor that works to update its video drivers.

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Do you frequently receive a black screen or a no display when you turn on your computer or use it? The black screen or display not working on Windows 10 is a well-known problem. It indicates you’ll have to try a variety of approaches in order to tackle the problem effectively. There are a variety of reasons why a computer display may become blank or black, and we’ll cover up all of them here. Almost always, the problem can be faulty hardware, such as the video card, connectors, monitor, RAM, or motherboard.
Checking power supply is definitely something you’ve previously done if your display is not working, but it’s worth mentioning because it happens more frequently than you may believe. Please make sure that the monitor is on, which is generally indicated by a light on the power button. The monitor should be on if the light is on, and you should see a message.
If the display is on but not working, press the menu button to access the monitor’s built-in functions. If you still have a blank screen, your monitor may be malfunctioning. In case you have another monitor you can try connecting it. If a different monitor works properly, the original monitor’s power supply may be faulty. Replace the power supply to see if it solves the display not working or no display problem.
In this situation, double-check the physical connection, making both ends of the video signal cable plugged into the correct in and out ports. Shaking the mouse and disconnecting and rejoining the video cord might also assist in waking up the display.
Re-check the monitor for power, even if it appears to be getting power. (For more detailed information, consult your manufacturer’s support website.) Use a different port and shake the mouse or hit any key to wake up the monitor supports several outputs. While it is uncommon, a driver upgrade may cause the video signal to be routed to a new port (DisplayPort, HDMI, DVI, Thunderbolt, VGA).
A loose memory module frequently results in a laptop not showing a picture. So, reseating the memory modules on a laptop might fix a blank or black screen problem. You may ultimately make it by disconnecting the AC adapter from the laptop, removing and reseating the memory module, and reconnecting the AC adapter to the laptop.
To resolve the black screen when connecting to an external monitor, enter the device’s control panel and boost the brightness. It’s also a good idea to double-check that the monitor is connected to the right source.
If the problem occurs on a laptop, boost the display brightness using the keyboard key combination. In most cases, you’ll need to hit the Function (Fn) key together with one of the function keys, such as F8 or F10.
To determine if you’re dealing with a broken display, graphics card, or damaged cable, try connecting the monitor to a different computer or using a separate video signal cable.
No display or black screen on the laptop may be due to peripherals connected to the device. Typically, no display can also be a reason for an update, and you should wait a few moments. Still, if it takes a lengthy period, it might suggest a hardware compatibility issue.
If you’re having trouble, turn off all of your computer’s accessories, including printers, cameras, detachable drives, Bluetooth, docking stations, and other USB devices.
Restart the device, and if it returns to normal, one of the peripherals is most likely the source of the problem. You may figure out which component is causing the problem by reconnecting each one at a time until you find the one that’s causing the problem.
If your computer or laptop turns on, but no display appears, you may refresh or reset it to reinstall Windows without changing your files, software, or preferences.

If you’re able to use one external monitor, but have issues using more than one, it’s possible that your display adapter (also called a graphics card) can’t support more than one monitor. For information on how many monitors your display adapter can support, contact its manufacturer.
Note:If you are trying to use a display splitter extend your display to more than one external monitor, you won"t be able to. The splitter is duplicating the same signal instead of creating two independent signals.
If your device only has one video output port, then by default, you can only support a single external monitor. You"ll need one of the following to support more than one external monitor:
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Some of the most common computer monitor problems include blank screens, the monitor not turning on, and images being displayed in the wrong size or blurry. This happens even if you have a high-end monitor for your Macbook Pro or PC. Luckily, there are several easy steps you can take to troubleshoot these and other issues that will generally solve the problem.
Restarting your electronics is always the best place to start when troubleshooting a problem. If there is an issue with your favorite computer monitor, turn it off completely and then back on again. Most displays have a power indicator light that will light up when it is on. If this light does not turn on after pressing the on/off button, your display is either dead or is not receiving power. If your display does turn on but is still experiencing issues, go through the same reboot process with the computer you’re connecting it to.
The next step in fixing any screen and operational issues with your display is to check all of your connections. You want to make sure that the electrical cable and the computer connection cable are both securely in place. The easiest way to do this is to unplug the display from the power source and from the monitor completely. Do the same with the cord to the computer. Then, resecure both cords tightly in the correct input ports.
If problems persist, check the screen, wires, and inputs for any signs of physical damage. For the display, look for any cracks in the body of the monitor or the screen. When inspecting the cables, look for any crimps in the wire, cuts, or fraying. Check the corresponding inputs to make sure that they aren’t loose or damaged.
Consequently, if there’s physical damage present your warranty should cover it. If you don’t have one yet, you’ll need to decide if the Asurion Amazon protection plan is worth it.
If images on your display appear but are the wrong size or blurry, you should go into your computer’s display settings to make adjustments. If your desktop image is either too small or too big for the monitor size, adjust the display’s resolution settings until you get a clear picture that fits the full size of your display. Here, you can also make sure that the computer is properly recognizing the monitor.
Some monitors require a driver installed on your computer to function properly. In some cases, installing or updating your monitor’s driver could solve connection and picture issues. To find out more about your display’s driver and download the latest version, go to the manufacturer’s website for your monitor and search for your display model. The user manual that came included with the screen should have instructions on proper driver installation as well.

A broken screen is any kind of damage that prevents you from viewing the content on your computer or web display. This can range from a cracked LCD panel to complete blackouts or discolorations. In some cases, it may also be caused by hardware failure such as a loose connection or faulty power supply. Any time that your computer"s display does not work properly, it is likely due to a broken screen.
There are many different causes for your broken screen. Common causes include pressure on the display panel, physical shock or impact, electrical problems, and even age-related wear and tear. If you ever drop your laptop or tablet, there is a good chance that the resulting impact could break the LCD panel of your device. Additionally, if you leave your laptop plugged in too long without using it, this can cause the internal electronics to fail over time.
If you notice any discoloration or "spots" on your computer"s display, this could be an indication of a damaged LCD panel. Additionally, sudden blackouts or strange lines across the monitor could also suggest a problem with the hardware components inside the device. If you ever just see nothing at all on your display – even after restarting – then this usually indicates a complete failure in one of the internal components and would require repairs from an authorized service center.
In most cases it is not possible to repair a broken screen yourself; instead, it will need to be sent off for specialist repairs from an authorized service center. Depending on what exactly has gone wrong with your device (for example if there is actual physical damage) then additional parts may need replacing (such as an LCD panel). However, in some cases simply re-seating connections between components can solve certain issues so make sure when troubleshooting that you check all cables and connections first before taking your device in for repair!
Yes absolutely! Most importantly never operate your devices with visible cracks in their displays as these can cause severe injury - either directly through contact with exposed circuits or through electric shocks where liquid gets into any electrical components inside the device. Also avoid using devices with loose connections between components as these can easily cause further damage if left unchecked! Finally make sure that any external monitors you use are compatible with both software applications and hardware drivers, so they don"t cause any compatibility issues when connecting them up to computers with damaged displays.
One of the most important things you can do is take proper care when handling your device. Keep it away from any sources of physical shock, avoid putting too much pressure on the display panel, and always store it in a safe place when not in use. Additionally, make sure you always unplug or shut down your device properly before moving it - this will help protect against any electrical problems that could cause damage to the internal components. Finally, invest in a sturdy laptop case or sleeve which will provide extra protection for your device and ensure that any accidental drops don"t cause further damage!
Common signs of hardware failure include strange noises coming from the internal components (such as fans or hard drives), sudden blackouts on the display, decreased performance (longer boot times for example) and general mechanical problems such as loose screws or cables which have come undone. If you experience any of these symptoms, then it might be time to check up on your device"s health – either by yourself or sending it off to an authorized service center where they can inspect it more closely!
If you ever notice that your computer"s display starts flickering or behaving strangely (for example turning itself off/on without warning), then first try resetting the power supply by unplugging/removing any batteries before plugging them back in again. If this does not work, then there may be a fault with one of the components inside so you should send your device off for repairs at an authorized service center
If you have a cracked or damaged laptop/computer screen, then the best course of action is usually to take it for repairs at an authorized service center. In some cases, depending on the severity of the damage, they may be able to replace just the LCD panel (or part of it) which will cost less than replacing the whole device!
If you ever experience any kind of display issue, then one important thing to remember is not to panic! Most of these problems can be solved with simple troubleshooting steps and in many cases require only some basic maintenance and cleaning. Additionally, always make sure that you get your device serviced by an authorized service center as they will have access to genuine replacement parts if needed - plus they will have experienced technicians who will be able to diagnose and fix any issues quickly and efficiently.
The best way to clean your laptop/computer screen is to start by turning off the device and unplugging it from any power sources. Then, use a soft, lint-free cloth to gently wipe off any dust or dirt particles from the display panel - using only mild, non-abrasive cleaning solutions if absolutely necessary. Never spray any sort of liquid directly onto the screen and always avoid using things like paper towels or harsh chemical products as this could damage the coating on the display. Finally, you can use a compressed air canister to blow away any stuck debris which may have made its way into hard-to-reach areas!

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However, one of the primary advantages that makes it a prime choice for most people (especially working-class individuals and students) is its mobility while packing similar performance of a PC.
Unlike a desktop computer where you can remove and replace damaged parts yourself, a laptop cannot. One of the biggest examples, which is our core focus here, is screen issues. It isn’t the same when it comes to a PC where you can easily purchase a new monitor to replace the broken one. A laptop needs professional repairs to fix that issue or at worse requires consideration in buying a new unit entirely – which is most often the case.
Let’s start with one of the most common laptop screen issues – no display or blank screen. There’s a lot of reason behind this problem. Fortunately, there are also plenty of troubleshooting procedures you can try that might probably fix it.
First of all, you should confirm that when you turn your device on, it powers up just like normal – power icon is lighting up, the HDD (hard disk drive) is running, and the fan is spinning. That is to make sure what you’re experiencing is indeed a “no display” screen issue. There are two primary causes: Motherboard has faulty hardware parts, or the LCD or LED is broken. Either one of the two is what’s causing the problem, and knowing which is the key to solving it.
First and foremost, start checking the screen if it is truly the one causing the problem. You can do this by connecting your laptop to an external display – a computer monitor or a smart TV works well. Turn your device again, if it shows a boot up on the external screen, then it’s guaranteed that your laptop’s screen is, in fact, the issue.
Having a defective LED or LCD is an easy repair, but you should first check if your laptop is still under warranty. If it is still under warranty, go directly to the nearest repair hub and do not attempt to fix it yourself. If it’s not, you can go to a computer parts supplier or, better yet, laptop manufacturer’s certified parts dealer and purchase a replacement screen. We suggest that you bring your laptop with you to get the exact screen replacement and eliminate the risk of getting the wrong one.
Before you continue and replace the part yourself, take note that you are doing this at your own risk and we are not held accountable for any damage, injury, or data loss during the process.Steps in replacing the defective screen:
Test and turn your laptop on – you do it first before returning the bezel back in place just in case it still won’t work (although chances are pretty slim, the replacement itself could be defective)
Once you can see your computer booting up and the screen now functions properly, the repair is complete. It’s not a hard fix, but it takes patience and time to execute correctly.
As mentioned above, if it still doesn’t work after connecting your laptop to an external screen, we proceed to the second step. In this step, we are going to check your device’s BIOS (basic input/output system).
For some reason, a computer’s system may go haywire even if things were running smoothly. A quick and straightforward solution is to reset its BIOS. Here’s how to do that:
This process should reset your laptop’s bios, and if that was the only problem, your computer should run without any problem. You are then free to insert the battery back in. However, if your computer still doesn’t display anything, proceed to the next step.
One of the leading causes, about 90%, of no display issues in both laptop and desktop computers is due to a faulty RAM (random access memory). The problem may be as simple as having a dirty memory stick, or it may be broken and needs replacement. Fixing this problem is as easy as resetting the bios.
If your laptop has two memory slots and two chips – and if unfortunately it still did not work – you should make use of only one chip and one slot at a time and perform a test. To elaborate, choose only one chip and use it in one of the slots, and then turn your device on. If that fails, use the same chip but insert it in the other slot. Again, if that still fails, use the unused chip then redo the previous steps.
If your device works after doing the above, apparently, one of those two memory sticks is the problem. If both of the chips did not work, you could further verify by borrowing the same type of memory chip (a working one) from a friend and test it on your laptop. If it works, you should purchase new RAM chips/sticks for replacement. Again, bring the defective RAM to the store to accurately get the same type – you may choose to upgrade if you like but it should match correctly.
If the three steps above didn’t solve the “no display” issue, there’s a huge chance that your laptop’s problem is within the motherboard or GPU. In that case, you can’t do anything about it. The best option you have is to bring your laptop to a repair centre and let the professionals deal with it, or you can also buy a new unit instead.
If your laptop’s LCD or LED screen has some visible black dots or lines, you should first try to press it – just enough force that will alter the display. Most of the time, this problem is due to trapped or wedged pixels. Applying pressure on it will usually loosen and free the pixels, and when it is unstuck, the dots and lines will disappear.
However, if applying pressure to it doesn’t remove or alleviate the dots, then the only way to solve it is by replacing the screen. Most of the time, monitor lines and dots are usually bearable and poses no hindrance to productivity or usage – so as long as that’s the case, there is no need for replacement.
Another common problem is when your display is darker than usual. First of all, you have to make sure that you set your laptop’s brightness level to maximum. If that does not work, then there are two other ways you can do yourself to fix the problem.
Firstly, you can try closing and opening the lid. Most of the time, your laptop just lagged and didn’t follow the system protocol immediately or the lid switch was stuck. Manually closing and opening the lid back again usually solves this issue.
Secondly, you can do a quick restart/reboot. It may just be a minute system error or problem that can be solved by restarting your device. After it has fully booted up, you can assess if it’s still dimmed.
If both didn’t work, there might be hardware problems – burnt backlight or inverter, or broken cable. We do not advise you to do these manually as it is more complicated than replacing the screen. Doing it on your own may destroy the circuit board (which is quite expensive) and backlight lamp. The lamp itself contains mercury (extremely hazardous to your health) and lead glass – it’s brittle and may cause static charges and electrocute you when repairing it without the proper tools.
If your laptop’s screen is messing up – colour is incorrect, divided screen, or jumbled display – it’s often due to a defective GPU. There is nothing you can do but send your laptop to a professional repair centre. It requires replacing the GPU, which is almost always connected to the motherboard. It also needs precision tools to repair successfully, without so, you may worsen the damage.

Instrument Sales & Service is here to help if your Chevy Silverado Radio is having display issues or general radio problems like speakers are out. We offer a replacement service for many different years of Chevy Silverado. With over 30 years experience in the automotive business, we can help you fix your factory Chevy Silverado Radio.
If your factory Chevy Silverado radio display isn’t working, it may be because the display is burned out. The most common reason for this is because of a problem with the circuit board. If this is the case, we offer a replacement service for your Chevrolet Silverado 1500 and up.
The radio screen in a Chevy Silverado 1500 vehicle will go out for several reasons – most commonly a blown fuse or maybe if you hit something and knocked a wire loose. It can also be due to a problem with the display itself, or a problem with the circuit board. If you’re screen is not working, we can help figure out what the problem is and get it fixed for you.
Symptoms for this are – no sound when you are in radio mode, static when in any other mode, or no picture on the screen at all. If this describes your Chevy Silverado, please give us a call or bring it by and we’ll take a look at it for you. Or just order a replacement on our website.
The most common problems we see with Chevy Silverado radios are – the screen goes blank, no sound, or static in the speakers. These are all caused by different things, but can be fixed.
Many of the issues we have found are internal or the screen. This will mean you want a professional tech to work on your radio to ensure performance. Also, it’s important to have the right testing equipment to ensure functionality is correct. For this reason, we recommend working with a professional shop like Instrument Sales & Service.
Turn the car on, but don’t start it. Wait about five seconds and then press nine times on the preset buttons one after another, holding it down the whole time.
After about five seconds have elapsed, you should press nine times on the preset buttons one after another and then hold down the power button for about five seconds.
Resetting your radio in a Chevy Silverado may solve your problem of screen issues, but if this does not work, you may have to find a replacement radio for your truck.
You will need to work with a professional company like Instrument Sales & Service or seek a local dealership. They will be able to program your radio which is often called VIN Unlock.
This stereo has a great sound system and easy-to-use features that attract most people and is one of the most popular types of car stereo systems on the market.
After putting your new radio in, you can now reconnect the battery and turn on your radio to test if everything is working properly like steering wheel control, speakers, audio, videos, and GPS.

When TechRepublic first published a tutorial to correct flickering monitors, it was 2001. Since then, the computer world has changed significantly, and screens have come a long way. For example, CRT monitors — which were the norm back then — are much more sensitive and temperamental than the modern LED screens many of us use today.
But, despite this and many other advancements in screen technology, flickering screens are still an issue. And because screens have evolved as device types have diversified, the quest for solving this kind of problem has grown more complex.
In this guide, we’ll offer you tips for troubleshooting your flickering screen across laptops, mobile devices, desktops and a variety of other device types.
There are many reasons why a screen could be flickering, including physical damages to hardware, software problems and bugs in specific applications. Changes in settings and malware can also cause your computer or mobile screen to perform poorly.
Don’t lose hope if your device or computer screen seems to be out of play. There are several things you can do that might solve the problem quickly, whether you’re using a desktop computer, a connected monitor, a laptop, a smartphone or a tablet. The best troubleshooting route will depend on what device you are experiencing problems with as well as what operating system you are running.
In general, these are some of the best places to start when correcting a flickering screen. Remember that the higher the rate, the more energy the device will need to refresh the screen. When using smartphones, tablets and laptops, higher rates can deplete batteries more rapidly.
The first thing you need to check if you are using a monitor that connects to a computer is the cables. Whether you’re using VGA, HDMI, DVI or a display port cable to connect your monitor to a computer, it makes no difference; if the cable isn’t securely connected, there are going to be issues.
To start, you should check the cable at both the computer and monitor ends. If tightening it down or reconnecting it doesn’t solve the problem, try replacing the cable with a new one.
Laptop screens have cables that run hidden inside the frame and core of your computer. While you will not be able to rapidly fix this without professional help, you can identify if the cables are the problem.
To check these cables, start by turning your laptop on. Once the screen begins to flicker, slowly close and open the screen. If you notice changes to the flickering when you open and close the screen, that’s a good indicator that there are issues with the inner cables. Unfortunately, unless you have advanced computer hardware repair skills, you will need to take your laptop to a trusted repair shop to fix this issue.
Another important aspect of your device to check is the monitor refresh rate. The monitor refresh rate is the number of times the screen image is refreshed in a second, as measured in Hertz. If the refresh rate is too slow or otherwise under-optimized, you may experience issues with screen flickering and lag times.
While most users never adjust the refresh rates, it is a key component for how well your screen performs – it also affects battery life. Faster monitor refresh rates make it possible to rapidly move videos and images, as well as create a smoother motion experience when browsing or creating content.
Note the refresh rates that appear; these will differ, depending on your display and what it supports. Some laptops and external displays will support higher refresh rates than others.
Flickering screens on laptops, smartphones and tablets may be caused by physical damage, like after the user has dropped the device. In hardware damage cases, only professional support can help you identify and solve the problem. Before taking your device to be fixed, you might want to check out a couple more of our tips.
Nearly all devices use a video card to properly display images. In desktop computers, this device needs to be properly positioned on the motherboard or it will cause a lot of problems, which could include a screen flicker. You can check your desktop computer video card by turning your computer off and opening the outer case.
You’ll want to find the video card and check if it’s properly connected; if it is, it should be firmly in place. If the card is seated on the motherboard properly but the issue persists, a faulty card is likely the cause of the problem. Testing this is easy, especially if the computer has an onboard GPU that you can plug into.
You can also test a new card. To do this, power down the computer, remove the video card and connect the monitor cable to the onboard card or a second video card you’ve replaced the old one with. If the problem persists, then the issue is not related to the video card.
It’s always possible the monitor itself has gone bad, but before you consign it to the recycling pile, there are a few things you should do. Start by inspecting the monitor for physical damage and using the monitor’s onboard buttons to check for settings that may be causing the issue. If everything looks okay, it could still be a bad monitor.
To check this, unplug it and replace it with another monitor. If the new monitor is working properly, you’ve found your culprit; if the new monitor faces similar problems, you likely have an underlying issue with your computer or software.
There are a couple of steps you can take to fix your Windows or Mac screen if the above steps have failed. Here are additional tips for troubleshooting your Mac and Windows devices.
Although this may seem all too simple, sometimes restarting your computer is exactly what you need to fix a flickering screen. A full shutdown is the best way to completely reset and refresh your Mac in order to test this method.
You can check macOS and device updates by opening the System Preferences app and selecting Software Update. To update your apps, go to the App Store and select Updates from the sidebar. Once the list of all pending app updates appears, select Update All.
True Tone is designed to automatically correct images based on light levels, but this feature can cause a screen to flicker. To disable True Tone, go to the Apple menu, then System Preferences and click Displays. Now select your display and click on Display Settings. From here you can uncheck the True Tone checkbox (Figure F).
You have the option to test your Mac with Apple Diagnostics. This test will provide more detailed troubleshooting results and guidance to solve the issues your Mac may be experiencing. Learn how to run Apple Diagnostics at Apple Support.
The NVRAM — or PRAM — is memory Apple uses to store system settings in your Mac. These settings may be the cause of a flickering screen. You can reset the NVRAM on an Intel-based Mac, though not on Apple Silicon models.
To reset the NVRAM, shut down your Mac and turn it back on. Then, immediately press and hold these four keys at the same time: Option, Command, P and R. After 20 seconds, release the keys. Your Mac will restart with the original NVRAM settings.
Your device’s Task Manager can be used to see if an app or a driver is making the screen flicker. To do this test, press Ctrl + Alt + Delete, and the Task Manager will open. If the screen flickers but the Task Manager does not, then you have a bad driver or app problem; if the Task Manager flickers, you might have a malfunctioning hardware problem.
An incompatible driver or app can cause screen flickering problems. Microsoft’s official support page for Troubleshoot screen flickering in Windows has a detailed step-by-step on how to solve driver and app display problems like this.
If you are having problems with an iPhone or an Android smartphone, some of the steps listed above might work for you. Restarting your smartphone and ensuring your system is up to date is the best place to start.
As a last resort, you can back up your phone data and do a hard reset. Resetting a phone to factory settings will wipe it clean, but it will also restore the initial settings and remove any malware that may be causing the flickering.
A flickering screen can be a real nightmare; fortunately, screens are more resilient than they were a couple of years ago. Additionally, there are numerous tricks, tips and steps you can take before even thinking about repairing your screen or replacing it for a new one. Regardless of what kind of screen you’re struggling with, this guide offers great initial resources for solving the problem.
Never miss one of our long-form feature stories. Previous topics include a profile of Python"s creator Guido van Rossum, the Raspberry Pi"s origin story, smart farming and the future of food, and how IoT is being used to fight climate change.

If you experience that abnormal display problem of your PC (such as broken / blurred / sparkling image etc.), please refer to the following troubleshooting steps.
To provide you more detailed instruction, you can also click ASUS Youtube video link below to know more about troubleshooting for Main (Internal) Display
While you have display problems with main screen, you can check the display is a hardware or software issue by entering the BIOS configuration. Here you can learn more about How to enter the BIOS configuration.
If the display problem is still existing in the BIOS configuration, which means the screen hardware may be defective, and we recommend you visit the ASUS authorized repair center to test your laptop.
Note: Although some vendors of graphics issued the latter version but they might not pass its compatibility test. We suggest that you use the same driver as the one on the ASUS support site.
Please uninstall the present graphics driver first, refer to Appendices: How to uninstall driver. After the uninstallation is completed, please install the latest driver which is published on the ASUS support site, here you can learn more about How to search and download drivers.
If you haven"t updated the graphics driver before dysfunction happens, we suggest that you check if there is any new graphics driver on the ASUS support site.
Note: Some models possess both two graphics (integrated & dedicated graphics, such as Intel & NVIDIA) and can view in Device Manager, please confirm they are updated to the latest version, refer to Appendices: How to check the present version of driver.
Note:Only some notebook models have the component cover so that you are able to install a RAM (Random Access Memory) module in the memory module compartment, the reference as below.
Do you have display problems when you execute some specific programs / applications, such as the games or image processing software which occupies more system sources when it"s running?
Please remove all external peripherals, such as external hard drives, printers, memory cards, external ODD (if your computer is with internal ODD, please remove CD/DVDs), dongles, etc.
Note: Please don’t remove the AC adapter for ASUS laptop TP420IA and UX425IA model. (These models need to plug in the AC adapter to do the Hard reset process.)
Re-install the AC adapter and battery, then power on the computer and check whether the problem is resolved or not. If the problem persists, please continue the next troubleshooting step.
Updating software usually helps the system stability and optimization, so we recommend you check and often update to the latest version in your PC. Here you can learn more about:
If the display problem happens recently, and if you have ever created a restore point or there is an automatic system restore existed, try to restore the computer to a point before the problem began to resolve the problem. Here you can learn more about How to use restore point to restore the system.
If the problem persists after all troubleshooting steps are completed. Please backup your personal files, then reset the PC to back to its original configuration. Here you can learn more about:
Or, replace with shorter cable for monitor. Some cables might have problems with signal weakening, especially the VGA (D-SUB) cables with analog signal. Here you can learn more about How to fix Display problem on External monitors.
The screen color temperature might be a little bit different for each panel even if the manufacturing process is the same, so it’s normal. ASUS makes sure the manufactured products to meet the specification, so please feel free to use it.
In addition, you can use Splendid to adjust the display color of your screen, or purchase the PANTONE Validated products to get a more accurate color correction for your experience.
If you experience that the color or color temperature problems on your screen, you are able to adjust the related settings via Splendid. Here you can learn more about The Splendid feature in MyASUS Customization.
A1: It’s a normal Windows situation. If the color setting is set to the light mode on your system, there is a temporary white blinking display after entering the lock screen or resume from sleep mode. Otherwise, there is a temporary blue blinking display if it is a dark color mode.
Note: If your PC is the AMD platform of graphics, please refer to How to uninstall AMD chipset driver, otherwise, please refer to the following steps.
Type and search [Device Manager] in the Windows search bar①, then click[Open]②. (The left-side search illustration below is in Windows 11, and the right-side is Windows 10.)
Type and search [Device Manager] in the Windows search bar①, then click [Open]②. (The left-side search illustration below is in Windows 11, and the right-side is Windows 10.)

Your screen remains black after turning on the PC? This is very frustrating, and you’re certainly not alone. Many Windows users are reporting this issue. But the good news is that you can fix it. Here’re 6 fixes to try.
If all you see is a black screen after pressing the power button, try pressing the power button for 10 seconds to force shut down your PC, then turn it on. Doing this repeatedly for three times, the Windows Startup repair should launch automatically.
If you boot into Automatic Repair, select Troubleshoot> Advanced options > Startup settings > Restart > Safe Mode with Networking, then follow the instructions below to see how to fix potential issues with your system.
There are many factors that can cause Windows booting failures, like corrupted or missing Windows system files, registry, and more. To see if this is the core issue for you, you can run a system scan with
3) You can review a summary of the issues detected after the scan is finished. Click START REPAIR to start the repair process. This requires the full version – which comes with a 60-day Money-Back Guarantee.
If your monitor won’t turn on, unplug the power adapter of your monitor, and then plug it back into the power outlet. If the problem still exists, you need to bring your monitor to the repair shop.
A poor connection between your monitor and your computer might also be the cause of your problem. In this case, reconnecting the two devices is very likely the solution to your problem. Here is how to do it:
4) Check to see if your video cable is damaged. If the video cable is fine, reconnect your computer to your monitor. Or, if you haveanother video cableavailable, try connecting the two devices using the new cable.
Sometimes, certain peripherals connected to your computer may also cause the black screen issue. Try disconnecting all your peripherals to see if that’s the core problem. Here is how to do it:
If your computer boots correctly, that means that one of the peripherals you removed is causing your problem. You should reinstall each device back into your computer and test them each time. Then, you’ll find the specific device that causes your problem. (Replace the device once you’ve identified it. Or, consult the manufacturer of the device for assistance. )
This process will vary depending on different types of computers. If you don’t know how to do it, consult your computer’s documentation or seek professional help.
Improper BIOS settings can also cause your PC to boot into a black screen. To see if that’s the problem for you, you should reset your BIOS to factory settings. Here is how to do it:
Hopefully, this article helped! Please let me know which method helped you, or if you have a better idea on how to fix this issue. I would love your thoughts!
Ms.Josey
Ms.Josey