Blank Screen Problem

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SKreme

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Jan 2, 2006
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One day the screen connected to my desktop would not work. When I turn on the computer, it sounds like it is powering up and the LED lights blink but nothing appears on the screen. I tried multiple screens and cables, tried the screen both plugged into the video card and plugged into the motherboard itself (which has built in VGA/DVI). Finally, I tried swapping out the motherboard for a new one. Same problem remains. Anyone have an idea what the problem would be? Is the issue the processor?

EDIT: To clarify, the screen works fine when plugged into another computer so it is clearly the PC that is a problem, not the monitor.
 

SKreme

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Joined
Jan 2, 2006
Messages
98
I've had the case and PSU for a while, but why would it be the PSU if the power supply sounds like it is on? Could it still be the PSU?
 
Joined
Sep 11, 2010
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3,993
Yes, it could still be the PSU. Do you have a known good PSU you can borrow to check out your system?
 
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Sep 11, 2010
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The reason I asked you the age of that case is it does have a 3 year warranty which should include that PSU.
 
Joined
Nov 29, 2012
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Run memtest86+ on all your RAM sticks to make sure it's not your RAM. if it passes then good, if it has errors then it is probably a faulty RAM, or RAM that became faulty over the years.
 

SKreme

Thread Starter
Joined
Jan 2, 2006
Messages
98
Turns out the power supply I had sitting around does not support SATA or the four pin power for CPU... Must have been from a really old machine. So I don't have any way to test if it was the power supply without buying a new one. Nor do I know how to test the RAM... How do I run a test on them if the computer doesn't show anything on the screen. Any tips would be appreciated.
 
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