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Monitor Goes Black, PC Still running. Help me out!

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Hello everyone.

Starting a few months ago my younger brother contacted me about an odd issue he is having with his PC (that I built for him probably 3 years ago).

When he is using it the monitor will randomly go black. The light on it stays blue and doesn't go orange like it was disconnected, it just goes black. No noises or anything when this happens.

However, when it does happen he says that the little hard drive activity light on his PC will go from the normal blue to a solid orange, like it's "loading". At this point, holding the power button down to shut it off does absolutely nothing. His only resolve is to pull the power cord from the PC or flip the switch on the PSU. This happens at totally random times and I checked event viewer and found nothing.

So, is it it the video card going out or would you blame the PSU going bad? Or neither?

Like I said, PC was built 3 years ago.
He doesn't game really at all.
 

Pierce Play's

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Well it might be the PSU but try blowing it out with canned air, i am pretty sure JaysTwoCents had this issue and the dust particles were conducting electricity and caused an overload. Display it might be the display failing and the connectors aren't good and might be to old. Hard drive it might be the hard drive because the disk might stop and the PC can't read anything so it doesn't do anything and black screens. hope this helped!
 
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Go to Power Options in the Control Panel and make sure sleep/hibernate, turn off HDD after "x" time are turned off.
 
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if it is an issue with hibernate, run the command line in my sig to manually toggle it off and on.
 
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I had the same problem when a GPU went bad. Does it black screen when a load is added, like playing a game?
 
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How many display ports do you have? Sometimes, certain cards output signals on the other ports instead of the correct cable. This happens when the software has that as a setting, so after a particular boot point the setting is activated.

Try the other output display ports of the graphics card.

If you can be careful browsing about the BIOS you can also set the external vga option and disable onboard vga. This is to ensure the graphics port on the board is not sending signals and is the default vga by some weird bug with your drivers.
 
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I'm sad to inform you that your monitor is joining the dark side. Imperator's telepathic power got him.
 
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I would clean the PC out and then try. It might be an issue with the PSU as well but i'd start with cleaning.
 
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I would clean the PC out and then try. It might be an issue with the PSU as well but i'd start with cleaning.
This ^^^. And make sure all fans spin properly too.
 
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