When the computer goes to sleep it generally give you some type of warning, for example, the PC says it’s going into power saving mode or there is no input signal, in any case, if you are seeing any of these warning messages then you are facing the above issue. There are 5 main cause which seems to cause this error which are:
Faulty GPU (Graphic Processing Unit) Incompatible or corrupted GPU Drivers Faulty PSU (Power Supply Unit) Overheating Loose cable
Now in order to troubleshoot the issue and fix the monitor randoms shut off, you need to follow the below-listed steps which will guide you on how to Fix Monitor randomly turns OFF and ON issues. So without wasting any time let’s see how the above issues which lead to the monitor turn off problem can be fixed. Note: Make sure you are not overclocking your PC as it can also cause this issue. Also, check if there is power saving or some other settings for the monitor that is enabled in BIOS which can cause this issue.
Fix Monitor randomly turns OFF and ON
Faulty GPU (Graphic Processing Unit)
Chances are the GPU installed on your system might be faulty, so one way to check this is to remove the dedicated graphic card and leave the system with only integrated one and see if the issue is resolved or not. If the issue is resolved then your GPU is faulty and you need to replace it with a new one but before that, you could try cleaning your graphic card and again place it in the motherboard to see it’s working or not.
Fix Monitor randomly turns OFF and ON Faulty GPU (Graphic Processing Unit) Incompatible or corrupted GPU Drivers Faulty PSU (Power Supply Unit) Monitor Overheating Loose Cable
Incompatible or corrupted GPU Drivers
Most of the issues in monitor regarding display turning on or off, or monitor going to sleep, etc are caused mostly because of incompatible or outdated drivers of graphic card, so in order to see if it’s the case here, you need to download and install the latest graphic card drivers from your manufacturer’s website. If you can’t login to Windows as your computer screen turn off instantaneously after power up then you could try booting your Windows into safe mode and see if you are able to Fix Monitor randomly turns OFF and ON issue.
Faulty PSU (Power Supply Unit)
If you have a loose connection to your Power Supply Unit (PSU) then it can cause monitor randomly turns off and on issues on your computer and in order to verify this open your PC and see if there is a proper connection to your Power supply. Make sure the PSU fans are working and also make sure to clean your PSU in order to ensure it runs unhindered without any problems.
Monitor Overheating
One of the reasons for monitor randomly turning off is because of monitor overheating. If you have an old monitor then the excessive dust build up blocks the vents of the monitor which doesn’t allow the heat to escape ultimately causing overheating which would turn off your monitor in order to prevent damage to the inside circuits. If the monitor is overheating then unplug your monitor and let it cool down for few minutes then again try to use it, the best way to fix this issue would be clean your monitor vents with a vacuum cleaner (With low settings or you could damage your monitor inside circuits). As the monitor gets old you face another issue which is the aging capacitors also loses its power to charge properly. So if you are facing frequent monitor turns off and on issues then this is because the capacitors inside the monitor circuits are not being able to retain the charge long enough to transfer it to the other components. In order to Fix Monitor randomly turns OFF and ON issue you need to decrease your monitor brightness which will draw less power and you would be at least able to use your computer.
Loose Cable
Sometimes the silly things seem to cause big problems and the same could be said about this issue. So you should look for the cable which connects the monitor to your PC and vice-versa to look for loose connection and even if it’s not loose make sure to unplug it & then again plug it back properly. In addition to this also make sure your graphic card is properly seated in its location and also check the connection to Power Supply Unit. Also, try another cable because sometimes cable can also be faulty and it’s best to verify that this is not the case here.
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That’s it you have successfully Fix Monitor randomly turns OFF and ON issue but if you still have any questions regarding this guide then feel free to ask them in the comment’s section. Image Credits: Danrok via Wikimedia, AMD Press via Wikimedia, Evan-Amos via Wikimedia
