what causes lcd screen to go black free sample

Are you using a Windows 10/11 laptop but the computer screen goes black randomly? What do you do when your laptop screen goes black? Laptop screen black is an annoying thing but don"t be worried. Here, this post is written for you to fix a laptop black screen (2 cases) to run the computer smoothly.

According to users" feedback, computer getting a black screen is a common issue. Some users have reported that the black screen doesn’t always occur. However, when it does, the laptop screen goes black for a second; then 5 seconds later, it happens again. It can even repeat several times.

Perhaps you are experiencing a random PC black screen that can bother you a lot since there is not any error code or message giving you an idea where to start troubleshooting. Sometimes, you meet the situation - laptop screen black but still running/on.

An unexpected black screen can happen on Asus, Lenovo, HP or Dell laptops in a number of scenarios in Windows 10/11, which may stem from hardware issues and logical faults - for example, a connection problem with your display, power supply, hard disk, internal memory, graphics card, virus attack, mistaken operations, software incompatibility and more.

Tip: Sometimes you may receive a black screen when booting Windows rather than computer screen goes black randomly during use. In this case, you can read this post - Here Is the Way I Fix Black Screen Error When Booting Windows to find solutions.

No matter which method you use to fix the issue of the screen goes black randomly, in order to ensure your data security, we strongly recommend backing up your important files first of all since data loss may happen at any time and anywhere in case of a random black screen.

If the laptop screen keeps going black, you might be unable to enter the computer desktop. Then, you may ask: how can I back up my files in the event of an unbootable laptop? Actually, it is easy as long as you use a professional Windows backup software for Windows 11/10/8/7.

Here, we suggest using MiniTool ShadowMaker Bootable Edition to create a file backup when the screen goes black randomly. First, you need to use the Trial Edition of this software and create a bootable disc or USB flash drive by using the Media Builderfeature to back up files in WinPE.

Tip:If the laptop screen keeps going black for a few seconds but is able to go back to normal for a little bit allowing you to reach the desktop, you can directly back up files with Trial Edition rather than Bootable Edition.

Step 2: Then, this backup software for Windows 11/10/8/7 will run. Just go to the Backup page where you can view all system related partitions are selected in the Source section.

Here, your purpose is to back up files before fixing the random laptop black screen, so you need to manually choose what you need to back up. Just go to the Source module to enter the following interface, click Folders and Files and choose the significant files you want to back up in the pop-up window.

Step 3: Next go to the Destination module where some options are offered for you to choose. Just select one to store the backed up file image. Here, it is recommended to select an external hard drive or USB drive.

Tip: In addition to using MiniTool ShadowMaker for file backup, you can choose the Windows data recovery software, MiniTool Power Data Recovery, to restore files from the laptop with a black screen. This article - How Do I Solve Windows 10/11 Booting to a Black Screen with Ease shows you more information.

Right now, it is time for you to fix the random laptop black screen problem after you have backed up or saved your important data. Go to the next step to find the solutions.

As mentioned in the first part, your laptop screen may get black due to many reasons. Here in this part, we will show you the different solutions to laptop screen black but still running/on due to different cases: hardware issues and software issues.

The most common and critical hardwares that can cause laptop black screen are the power supply, liquid crystal display, memory bank, hard disk, motherboard, etc. So it is necessary for you to troubleshoot these one by one.

1. First, check your power supply. Sometimes, for a laptop, if the power itself has a problem, it is possible that the screen goes black even though plugging in an external power supply.

In this case, you can choose to remove the power from your laptop and plug in an external power supply. If the Windows can boot up, perhaps the internal power is corrupted. Just go to buy another to replace it.

2. If the power indicator is on all the time and the external power is plugged in properly, then a random laptop black screen is not caused by the power. So you need to carefully check the cooling fan port to see whether there is wind and check if the hard disk indicator light is on.

3. If there is no problem, restart your laptop and hear if there is a continuous beeping voice. If yes, perhaps the memory stick is loose. Just plug it back in.

4. Next, check your graphics card or liquid crystal display. Connect the external monitor to the external display interface of the laptop, restart Windows OS and see whether the external display can work normally.

If yes, the motherboard, CPU, hard disk, graphics card, and memory don"t go wrong. And perhaps it is the liquid crystal display that leads to the issue laptop screen keeps going black. And then you need an after-sales service to fix the displayer.

If the external displayer doesn"t show anything, the motherboard or graphics card may be broken. Also, you need to ask an after-sales service for help.

5. Sometimes, the laptop temperature is too high; in this case, if you often play games despite the heat dissipation performance bot being good, as a result, the screen goes black randomly due to the graphics card temperature being too high.

Check your graphics card to see if it"s burned out. If not, please clear the dust thoroughly, reclean the exhaust system, apply silicone, and replace the fan.

This way is an easy solution to laptop screen black but still running. Just use the Windows logokey +Ctrl+Shift+B keyboard shortcut to wake up your display. If Windows is responsive, a short beep will sound and the screen will blink or dim when Windows attempts to refresh the screen.

Step 1: If you are unable to see anything on the screen due to a black screen, restart your PC, when the blue Windows logo appears, press the power button and reboot. Repeat these steps several times until Windows 10/11 automatic repair is triggering.

Some of you report the issue - the computer screen goes black but computer still running. For example, you are listening to music or playing the games, but only the screen becomes black while the voice is still present. In this case, you can take the graphics card driver into consideration.

If the video driver isn"t working properly, you can uninstall it in Safe Mode, and then let the operating system reinstall the driver automatically in the process of a restart.

Step 2: Expand Diskpay adapter, find your graphics card driver and right-click on it to choose Uninstall device to fix laptop screen goes black but still on issue.

Note:To remove the driver from your laptop, you can also select the Delete the driver software for this device option. Sometimes, this is recommended, but note that if the operating system fails to find the driver online, you"ll need to download a correct driver for your video adapter from your laptop vendor"s website.

Perhaps the screen goes black automatically or turns black every minute, but can go back after moving a mouse. In this case, maybe it is due to the power setting of your laptop.

Tip:If your laptop screen randomly goes black, but it can still enter the desktop Windows, you can also go to Control Panel > Power Options to edit the plan settings, for example, never turn off the display and never put the computer to sleep.

Sometimes viruses can cause the screen to go black. If you haven’t installed antivirus software on your laptop or the installed program isn’t powerful enough to block the viruses or malware, viruses may attack your laptop.

To scan and remove viruses, you also need to boot in Safe Mode with Networking, then run the installed antivirus program or download one online, and next perform a full scan of your Windows system to fix laptop screen black but still running/on.

Right now, all possible ways to fix laptop black screen are shown to you. If your screen goes screen randomly, please try the above solutions to troubleshoot.

But firstly, you should use MiniTool ShadowMaker to back up your important files since the random black screen may lead to data loss due to all possible causes of the laptop turning black.

On the other hand, if you have any question regarding our software or any method to repair black screen on your Asus, HP, Lenovo or Dell laptop, please send an email to [email protected] or leave your idea in the following comment part.

what causes lcd screen to go black free sample

Ever had your TV showing nothing but a black screen even if the audio was working? Unfortunately, that’s a common issue with low/middle-end LCD/LED TVs these days… Even more frustrating, this issue often comes from a rather tiny and cheap component that can be easily replaced. Most common issues are:

One of my relatives had this exact symptom happening all of a sudden. This problem on low-end TVs often occurs within the first couple years. As the repair costs for that kind of TV is pretty low, considering repairing it yourself might be a good idea!

The first step into repair is to find the root cause of the issue. As backlight failure is a very common issue, this is the first thing to test. To do so, the easiest way is to power on your screen, put a flashlight very close to it and check if you can see the image through. The image would be very dark, like turning the brightness of the screen very very low.

That implies disassembling the TV to access the backlight which is between the LCD screen in the front and the boards in the rear. In my case, with a Samsung F5000, I had to process as follows:

First we have to remove the back housing to reveal the boards (from left to right: main board, T-CON, power supply) and disconnect the LCD panel from the T-CON board.

Note: Older TVs have neon tubes for backlight, which is thicker and less exposed to this kind of failure. LED backlight is the most common thing these days, but do not mistake an LED TV with an OLED TV. The first one is a classic LCD panel with a LED backlight, whereas the second is an OLED panel that doesn’t need any backlight as it is integrated in each pixels (making the spare parts much more expensive by the way).

As we can see, the backlight system is made of 5 LED strips. First thing to do is look for burnt LEDs. Most LED backlight systems have strips set in series, meaning that if one of the them fails, all the system goes dark…

Using a multimeter, we can confirm that the strips are indeed set in series, so now we have to test each strip individually. Professionals use LED testers such as this one (about 40$ on amazon) but as I didn’t had one at the time, I decided to make one, McGyver style!