Rig keeps either shutting down or freezing ever 4-8 hours. Psu and cards have been checked in my main computer and seem to run fine. I know the best thing to do would be upgrading but it's just not in my budget right now. Any ideas what the problem could be or what I can check would be helpful.
Rig spec's (from an old Gateway GT5082)
cpu AMD 64 x2 3800+
mobo FOXCONN C51GU01
ram 2gig hynix pc3200u-30330
psu cooler master GX 750w
gfx sapphire 7990, evga 750ti
windows 7
your psu could be failing after a couple hours, that happened to me twice. eventually i got a bigger psu. if it's just *pow* shutting completely off out of the blue then it's probably the psu. in fact, it could work alright in a regular computer because it will only fail if there is massive power being drawn. just a thought.