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[Help] Monitor turns on and then blacks out

Last response: in Graphics & Displays
December 23, 2012 1:46:56 PM

Hey guys, I have a family member that their display turns on (varies from a few seconds to minutes) and then blacks out.

They have a HP Pavilion P7-1126S, which has an AMD A8 and ATI HD 6550
Full specs here

We have ruled out the monitor by trying another monitor and it does the same thing. Also have tried putting in a dedicated graphics card to test since it was using the onboard and it still has this same problem. We tried different cables and also updated graphics drivers. The problem continues and happens whether we are in bios or windows does not matter.

At this point I am thinking it could be a problem in the motherboard. Does anyone have any other suggestions?

More about : monitor turns blacks

December 23, 2012 2:11:05 PM

Maybe a PSU problem, or the Motherboard Defect :/  Can't say.
Which PSU you're using?
December 23, 2012 2:16:51 PM

He should be using the 300W PSU that came with the computer. I didn't bother to testing that as I didn't think that would be the issue. I have a spare 300W I could throw in it.
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Best solution

a b U Graphics card
a b C Monitor
December 23, 2012 2:40:00 PM

Is anything Overheating?
Looks more like a Mobo\PSU issue.
Replace both and check.
December 23, 2012 2:49:09 PM

I don't think anything is overheating, I the computer is fairly new (probably a year old) fan looks clean and running well, but I will have to check that too.
a b U Graphics card
a b C Monitor
December 23, 2012 2:49:53 PM

Then take out Mobo and check with another.
Same for PSu too.
January 1, 2013 11:53:47 PM

Best answer selected by jcl.