So here's what I now know. 1. Power was fluxuating from 107v to 120v. - Under powered memory. Needed 800mhz min, Kingston HyperX was only 667. To much memory being used. Had 4 gigs but XP only recognizes 2 to 3 gigs. So when I tried to run FarCry 2 using SLI, it killed the system.
MoBo was a POS. ASUS forum for the P5N32-E SLI is filled with issues, many just like mine.
So I have ordered
Corsair Dominator 1066mhz memory (2x 1Gig), a
Cyberpower CP1285ACRLCD back up PS, and I am looking at a
coolmaster UCP 700w PS.
A crap load of extra money but I guess needed. If this PC fails now I don't know what I am going to do.