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New Graphics Card and PSU, Computer shuts down.

Last response: in Graphics & Displays
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October 28, 2011 5:15:59 PM

I just upgraded my compute to include a EVGA GTX 560 Superclocked edition GPU and an APEVIA 680W Beast Power Supply (I got it PSU from a guy from work) and now the computer shuts off randomly, like power loss shutdown no blue screen, no nothing, sometimes its on for 2 seconds, sometimes its on for 5 minutes. Does ANYBODY know what is wrong? Also the GPU driver is up to date.

This is my the specs for my computer except for the GPU and the PSU, and its running windows 7 home premium:
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01...

This is my graphics card I used:
http://www.evga.com/products/moreInfo.asp?pn=01G-P3-146... 500 Series Family&sw=

This is the power supply I used:
http://www.apevia.com/ProductsInfo.asp?KEY=ATX-AS680W-B...

I should also point out that when I first installed the graphics card I had a 600W Logisys power supply in it but that PSU over heated while playing Battlefield 3, the fan on it would barely run.
a c 189 U Graphics card
a b ) Power supply
October 29, 2011 1:01:38 AM

Well, I think the problem is your PSU is not good enough to powering the whole components properly, my suggestion is borrow a bigger (or exactly a better) PSU. Do not cheap out on PSU, it's the most important thing inside your PC. Use a bad PSU could bring the whole parts to the end of their lives...

Do not buy, just borrow a PSU from friends or someone to try it out, if this "new PSU" is works then you know which one is the suspect of your problem... :) 
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October 29, 2011 1:06:53 AM

^+1!
This guy from work might have sold you a faulty PSU considering one of the rails might be shorting.
If its not the PSU check your mobo and make sure everything is plugged in and not coming loose often or with and slight gestures.
If you get it running, Enjoy your beast ;) 
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Best solution

a b U Graphics card
a b ) Power supply
October 29, 2011 2:01:59 AM

If you want to objectively, accurately and scientifically determine what PSU power is required for your Vid card and PC in both watts and 12v rail amps., the forum Utility link below will show you how easy it is to calculate this information and objectively determine which PSUs are quality built, reliable PSUs that can meet your needs. Be advised that the available 12v rail amps. is just as important as the total PSU wattage. You need both to be correct.

http://www.tomshardware.com/forum/314712-28-please-read...
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October 31, 2011 2:22:43 PM

No I didnt buy the psu from the guy at work, he gave it too me. we tested the card and the psu in different systems and the both work fine by themselves we ruled out it was that the minimum required amps for the gpu was the maximum amps the PSU could produce. We also discovered the problem with my old psu the fan had popped out a bit so it could not increas its speed when it needed to. that psu runs fine now and no more problems! thanks guys for your support and information!
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October 31, 2011 2:25:33 PM

Best answer selected by pache59.
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