How to check if PSU is failing?

blitzcrank

Honorable
Oct 12, 2013
23
0
10,510
Older rig here...got a Seasonic S12-500HT 500W powering a Core 2 Duo Quad and a GTX 280 Superclocked.

If I play an intensive game like Diablo 3 for example, monitor randomly goes blank from loss of signal from gpu and although fans are spinning, nothing else going on. If I turn off the computer and boot from a cold start, I often get artifacts (covers whole screen) when I boot to windows and have to restart a few times before problem clears. Does this too if I put computer to sleep.

Is this a PSU problem or just the graphics card? Is there some software I could use that will log 12V readings? HWMonitor doesn't show 12V on my setup.