[Solved] Problems with new comp locking up...

I recently built a system for my brother, approved in full on this site, specs on bottom.

After a month he has been having some issues with it locking up on him during random activites. Just regular web surfing or listening to music, not a specific program.

How do I go about testing for the problem? The only thing I can think of is that he has a newer mobo/processor/etc. but there is an older video card in the system, an 8800GTS.

Perhaps the video card is locking it up? It should be fully compatible, though. I will check for updated drivers on everything. Maybe the DDR3 is causing issues?

Note: Overheating is not the issue, core temp gauge never goes high.

Thanks for any help.


. 1 SAMSUNG DVD Burner Black SATA Model SH-S223L LightScribe
. 1 Patriot Viper 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3
. 1 Western Digital Caviar Black WD6401AALS 640GB 7200 RPM SATA
. 1 GIGABYTE GA-MA770T-UD3P AM3 AMD 770 ATX AMD Motherboard -
. 1 AMD Phenom II X3 720 2.8GHz Socket AM3 95W
. 1 Antec TruePower New TP-550 550W Continuous Power

Also using an 8800GTS, he doesn't game now so didn't need to upgrade that and it runs his dual monitors just fine.

I manually set the timing voltages... the auto-detect was way off. It had them set as 7-9-9-25 and it's supposed to be 7-7-7-20 for working best.

After I changed them I ran both a CPU and video card stress test at the same time... 12 hours later no locking up or restarting... seems to be fixed.

Thanks much.