A faulty PSU could do all sorts of stuff, fluctuating currents can damage the board, ram, cpu and gpu if it is faulty. What PSU is it? You can monitor the outputs from the 5V and 12V rails in the BIOS I believe, and how far away from what they are supposed to be can be an indicator of condition of the PSU. Another sign is random reboots/restarts, especially with load on the cpu or gpu such as in games.
SeaSonic S12 Energy Plus SS-550HT 550W ATX12V V2.3 / EPS12V V2.91 SLI Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E16817151027I did monitor the 5V and 12 V in BIOS, the values were very good, and there were no fluctuations, very steady.
I didn't have any random reboots, and I ran Everest, Sisoft Sandra, memtest86+ and other benchmarking & testing software, everything was OK. The problems began a few days after I built the system, the first thing I noticed was
the clock losing time. Then it got worse, and this morning the PC didn't start up, no beep, then it started after I hit reset a few times. I went right into BIOS and saw the clock lost about 15 minutes since I turned off the PC last night.
I think I'll get a new PSU and use that one with the replacement mainboard. Maybe 550 watts isn't enough for my system?? I thought it would be sufficient
Here are the components I used:
GIGABYTE GA-MA790X-UD4P AM2+/AM2 AMD 790X ATX AMD Motherboard
SPARKLE SFPX95GT1024U2H GeForce 9500 GT 1GB 128-bit GDDR2 PCI
Express 2.0 x16 HDCP Ready SLI Supported Video Card
AMD Phenom II X4 940 Deneb 3.0GHz Socket AM2+ 125W Quad-Core Black
Edition Processor Model
G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual
Channel Kit Desktop Memory M
Antec Nine Hundred Black Steel ATX Mid Tower Computer Case
SeaSonic S12 Energy Plus SS-550HT 550W ATX12V V2.3 / EPS12V V2.91 SLI
Certified CrossFire Ready 80 PLUS Certified Active PFC Power Supply -
LITE-ON 22X DVD Burner
Western Digital Caviar SE16 WD5000AAKS
Windows XP Professional 64 bit
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