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