Power problems - unstable rails
Hi, I have just built a new PC and it seems to be running reliably, but the 5V, -5V and -12V rails are being reported as fluctuating wildly in Sisoft sandra and PC Wizard 2006.
The +/-5V rails are reporting as fluctuating from 2V through to 6V, and the -12V seems to fluctuate from -4V to -12V.
Prime 95 torture test ran stably for 2 hours, and everything seems to work reliably. What is going on?
Socket 939 Athlon 64 3200+
Gigabyte GA-K8N Ultra 9
2GB corsair value select ram
Geforce 6800 GS PCI-E graphics
Pioneer DVD RW
DVD ROM
Hitachi deskstar 250GB HD
120 GB IDE HD
40 GB IDE HD
Seasonic 500w power supply
Tigger