difficult problem

so here is my problem.

pc shuts off with no warning and appearantly no cause..

i can surf the net and not play games for days with no problem, i can run prime95 for 12 hours and no problem..

i can load cs:s and let is sit for hours and no problem..
join a team and boom, shuts off..

can load world of warcraft and it shuts off after about 5 secs..

i can stress test video card for 12 hours straight and no problem..

so far i know its not heat, prime95 stresses cpu and raises temps but its fine..

stressed video card, raised temps and max its capabilities and it was fine, so its not the card itself..

ram tests fine, cpu tests fine...

dont know how to stress test a power supply, if someone can point me to that i can possibly rule that out..

antec 900 case with 4 120mm fans and a 230mm on top running highest speeds

core 2 duo e8400 stock 3ghz
thermaltake spinq @ max speed
evga gtx 260 ssc
4gb g.skill ddr2 800 PI @ 4-4-4-12
asus p5n72t-premium

ideas? give me everything you can think of and if i havent already ruled it out, i will test it.

 

I had a similar problem with when I got my ATI Sapphire 4870 1GB GDDR5 GPU it turned out it was my PSU but since you can stress you're GPU it makes it less likely to be that.

The only thing I can suggest it testing everything at once (simulating gaming conditions), you might wanna try that before ruling out you're PSU.

Keep an eye on you're temps though LOL

Hope this helps

:major2-Bit-Geek:major