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Fix: Monitor Turns Off And On Randomly

June 28, 2022
Fix: Monitor Turns Off And On Randomly

Several users have recently experienced an issue where their screens suddenly go black for short periods of time. This behavior occurs repeatedly, at intervals ranging from one second to several minutes. The problem is compounded by the fact that the screen turns off without a specific event or time.

Many users report that this issue occurs during graphics-heavy jobs or just randomly.

According to our investigations, there are also no official statements from official sources. In this article, we will see all the reasons why this problem can occur on your computer.

You can also read: How To Fix Generic PnP Monitor Issue On WN 10

Index of contents

  1. What causes random screen dimming?
  2. How To Fix: Monitor Turns On And Off Randomly
    1. Solution 1: Check the HDMI/VGA cable.
    2. Solution 2: Disable overclocking.
    3. Solution 3: Update Windows to the latest version.
    4. Solution 4: Update graphics drivers.
    5. Solution 5: Check the power supply unit (PSU).
    6. Solution 6: Uninstall/Deactivate Third Party Software.
    7. Solution 7: Change your power settings.
    8. Solution 8: Check your GPU.
    9. Solution 9: Check for interference/power issues.

What causes random screen dimming?

After much research on this issue and combining user reports, we have come to the conclusion that this issue occurs for a variety of reasons. Here are some of the reasons why your monitor may turn black:

  • Faulty power supply: The power supply is the most common cause of your monitor going black. Since it powers the motherboard, it may not be supplying the correct voltage.
  • Video cable: The video cable (HDMI or VGA) that connects the monitor to the computer may be broken or damaged. This usually results in a black screen when touched or even accidentally pressed.
  • Graphics Processor: If a dedicated graphics processor is installed and the monitor is connected through that processor, problems can occur even if the processor is damaged or not connected properly.
  • Overclocking: The overclock it can be useful for some users to increase kernel performance, but it can also lead to complications like the ones described here.
  • Obsolete operating system files: If the operating system files are corrupted or incomplete, this may be the cause of the problem. Outdated versions of Windows can also be the cause.
  • Third Party Graphics Options: If third-party graphics enhancements (eg AMD, NVIDIA) are implemented, they may be out of sync with the operating system and could cause various issues.
  • Power Settings: System power settings determine how much power the computer uses and when it stops using power. If these power settings are not in sync with usage, the screen may go black.
  • Broken drivers: Graphics drivers are the main factor that controls the communication between the operating system and the hardware. If they are out of date or faulty, communication will not work properly and many problems can arise.
  • Third Party Software: Although this happens very rarely, it is possible that third-party software has been installed on your computer that is causing conflicts and strange problems like the ones described here. In this case, we can try to fix the errors and remove the software permanently.
  • Power failure: Lastly, the monitor may temporarily flicker if the house has poor wiring or electrical problems. There are some workarounds you can take to resolve this issue.

Make sure you have an active Internet connection and are logged in as an administrator before performing the solution. We also recommend backing up your data as a precaution.

How To Fix: Monitor Turns On And Off Randomly

Solution 1: Check the HDMI/VGA cable.

The HDMI cable may be faulty or damaged. The same goes for the TV/monitor, which may not work. Here we will go through some basic troubleshooting methods and see if they can help you diagnose and fix the problem.

  • Replace the HDMI cable. Before buying a new cable, connect the current one to another system and see if it works. If it doesn’t work, the cable is probably faulty. Replace the cable and try again.
  • Try using a different input source for your monitor or TV. If you are using a laptop as the input source, try connecting it to another laptop and see if there is a difference. If the signal is received by the other laptop, it means that the laptop is not configured correctly or the HDMI connection is not working.
  • You can also try isolate the problem and see if the monitor/TV is working fine with the other inputs.
  • If you’re using an HDMI to VGA converter, this may be bad news. Use a clean HDMI cable to verify that the HDMI module works correctly both in the inputs and in the outputs.

Solution 2: Disable overclocking.

Overclocking is now common on many PC models. The CPU performs short calculations for a short period of time. During this interval, the CPU reaches its threshold temperature and overclocking stops until the CPU cools down.

Many users have reported that disabling overclocking resolved their recurring black screen issue. Although these settings are designed to improve your computer’s performance, they seem to have the opposite effect.

We recommend disabling all overclocking and leaving the processor at factory speed. Also make sure that your computer is not running any optimization programs. These programs are known to conflict with operating system and graphics programs when trying to “optimize” your computer, killing some important processes.

Solution 3: Update Windows to the latest version.

microsoft regularly releases updates that fix bugs or introduce new features. If you haven’t updated Windows in a while, you should do so immediately. There have been cases in the past where the graphics system has stopped working properly due to system crashes.

When these errors are detected, Microsoft engineers release updates as soon as possible to solve the problem. Once the updates are installed, the monitor works correctly. Make sure you are logged in as an administrator before continuing.

  • Press Windows + Senter “update” in the dialog and open the app.
  • The configuration window will open. Click the Check for updates button. Now your computer will automatically check for the latest available updates and install them on your computer.

Note: Installing updates requires an active Internet connection. Depending on the size of the update, this may take some time.

Solution 4: Update graphics drivers.

As you may have guessed, graphics drivers are the main components that connect and pass instructions between the operating system and graphics hardware. If these drivers are outdated or corrupted, stutters and weird issues like a black screen occur.

Here we will successfully uninstall the current drivers and then try to install the new ones.

  • Download the DDU program (Display Driver Uninstaller) from the official website and install it.
  • After installing the Display Driver Uninstaller (DDU), start your computer in safe mode.
  • After starting the DDU, select the first option “Clean and restart”. This will completely remove the current drivers from your computer.
  • Once uninstalled, boot the computer in normal mode, no safe mode. Press Windows + R, type “devmgmt.msc” in the dialog and press Enter. Right click anywhere and Select “Check for hardware changes.” This will install the default drivers. Try playing the game and see if this fixes the problem.
  • In most cases, normal drivers will not work. You can install the latest drivers through Windows Update or go to the manufacturer’s website and download the latest drivers.
  • After installing the drivers, restart your computer and check if the issue is resolved.

Solution 5: Check the power supply unit (PSU).

The power supply is the main unit that takes AC current from a wall outlet and then transmits the appropriate voltage to other parts of the computer. For example, SATA ports may need more power than the motherboard.

If the power supply is faulty or not transmitting power properly at this point, there are plenty of problems, from repetitive screen flickering to computer crashes. What you can do is temporarily try another power supply. Check if the problem also occurs with this computer.

Also make sure you have replaced the cable that connects the power supply to the outlet. If the problem does not occur, check the power supply. In this case, continue with the other troubleshooting methods below.

Solution 6: Uninstall/Deactivate Third Party Software.

Third-party software, such as NVIDIA GeForce Experience and AMD applications, are often bundled with graphics hardware or drivers. In general, almost all of these programs allow the user to modify the graphics settings to improve the functionality or add some custom features.

However, despite their usefulness, they have been known to cause conflicts with the system. Disable third party programs running in the background and also disables image-related settings. The procedure to remove these applications is described below:

  • Press Windows + Rtype “appwiz.cpl” in the dialog and press Enter.
  • In Application Manager, locate the app that is causing the problem, right-click and select “Uninstall”.
  • After uninstalling the app, check if the issue is resolved.

Note: You can always save a temporary configuration file of a third-party app if you want to reinstall it and not lose all the settings you’ve made.

Solution 7: Change your power settings.

Power settings are basic protocols or rules that dictate how much power a computer should use and when it should store it. These power settings may be set to a value that is not supported by your system or may conflict with your motherboard. In this solution, we will go into the motherboard power settings and change the settings.

  • Press Windows + R to start the application Run. In the dialog box, type Control Panel and press Enter. The computer’s control panel will open. Make sure the “View by:” option it is configured as a small icon in the upper right corner of the screen.
  • In Control Panel, click Power Settings.
  • The current power mode setting is displayed here. If it is set to “Energy Saving” mode, change it to “High Performance” or “Balanced.”
  • If you’ve changed any internal settings for each plan in the past, click Change plan settings and select Restore setting default for that plan.
  • save the changes and exit the program. Reboot your computer and check if the issue is resolved.

Solution 8: Check your GPU.

If your computer has a specialized GPU from a third-party manufacturer (for example, NVIDIA/AMD), check if it works and is connected correctly. A faulty GPU, typically a heavily used and overclocked one, can cause a floating image on the screen.

If this happens, try disabling the dedicated graphics card and see if the problem persists with the integrated graphics card. If so, this can help you troubleshoot the problem and identify the culprit. The following procedure describes how to disable the dedicated graphics card:

  • Press Windows + Rtype “devmgmt.msc” in the dialog and press Enter.
  • In Device Manager, find your display adapter, do right click on the video card and select Deactivate device.
  • After deactivating the device, restart your computer and see if the problem persists.

Solution 9: Check for interference/power issues.

This is probably the last method, but it is just as important as the others. It is well known that power issues are one of the main causes of monitor performance fluctuations. You can find out by observing how your monitor behaves when you turn on a light or other electrical device.

If your monitor fluctuates, it means that the wiring is not in good condition or is it too old. The solution to this problem is an inverter (uninterruptible power supply) that regulates the voltage of your computer. If this solves the problem, our diagnosis is correct.

Note: If all of the above methods don’t work, you probably need to check your monitor.

You can also read: How to Set Up a Monitor on a Laptop