So a while back I built a pc, something I've wanted to do in a long while. I originally had but cheaper parts and it was decent and once together I had no problems accept I needed a better psu. So I went and got a 500w Apevia PSU at Fry's. So recently I decided to upgrade the GPU, the motherboard, the ram, the case, and add more displays. So I did that and reinstalled windows 7 and it worked, for about 2 hours then the monitor lost signal, fans went to 100%. Rebooted with no problems and again, about 30 minutes past and monitors lost signal, fans went to 100%. After that it would boot into windows and freeze then black screen again. Bios was fine but as soon as the splash screen popped up my monitors would loose signal. Strangely it would go into safe mode half the time and if I tried to repair windows through a CD, it would go black screen as well. So I thought it was the motherboard I had got or the RAM so I put everything back onto my old motherboard and returned the MB and RAM, reinstalled windows 7 and it worked for about 2 weeks. Then I added another hard drive. After that my pc froze at splash screen again and wouldn't fully load into my pc. So I put the new hard drive in by itself installed windows and it worked, then i put my other hard drives in and I couldn't get it to boot. So I just just left the new one thinking the old hard drives were bad. So its been working for about 3 weeks now and randomly 3 days ago my pc went black screen after being on for about 5 days straight. I found out the power went out for a split second so I didn't worry. I booted it back up with no problems. Then today it did it again. My monitors say "no signal detected" then my fans go 100%. I reboot and it works fine. So its not the hard drive, the motherboard, the ram, or the dvd drive. I'm beginning to think its my PSU or my GPU because before the upgrade to the new gpu and case it ran fine. Course a 5850 requires more power then the 4850 I had before so I'm leaning towards the PSU. Its not overheating everything runs at 28-34c. What do you guys think? You think the psu is supply insuffient power causing the computer to eventually power down? I also saw that my PSU 12+ voltage drops from 11.77v to 11.34, is that alarming or normal? It stays between 11.58v and 11.77v usually.
Specs:
Athlon II x4 620 w/ stock cooler
PNY DDR2 800
XFX 5850
Biostar A780L
LG x22 dvd burner
Seagate Baracuda 1TB HDD @7200 rpm
Apevia Java 500w PSU
Rosewill ARMOR Case
Specs:
Athlon II x4 620 w/ stock cooler
PNY DDR2 800
XFX 5850
Biostar A780L
LG x22 dvd burner
Seagate Baracuda 1TB HDD @7200 rpm
Apevia Java 500w PSU
Rosewill ARMOR Case