Hey, I'm having quite the problem and I cannot for the life of me figure what is happening...The computer will shut itself off due to overheat, at least that's what it says when I restart it. But when I'm looking at the temp monitor it shows the cpu temp around 30-40C, which is ok. Now the problem, it usually happens after long periods of playing WoW. Today I went out and got some silver thermal compound and applied it to the heatsink hoping it would work. It seemed to work but after my bro was on WoW for a good 5-6 hours, I logged in and it shut off on me after a good 30 minutes. Now here's the question, the cpu temp seems to be fine, but I can't monitor it while I'm gaming. So I'll list a few things that may be causing some problems: Few months back my power supply died on me so I had to purchase a cheap 480W for the time being. It seems to be working fine, so I'm not sure if that would be the problem. I bought a new stick of ram, but the current on in my computer is a DDR PC2100, while the new stick is a PC2700. I've never had problems running two different sticks of ram with different speeds before. Systems Specs: P4 2.0GHZ 400MHZ Bus Intel D845EBG2 Board 512 DDR266 MB Ram Chaintech Geforce 5200 FX 128MB Sorry for the long post, but it's getting annoying. Today I was questing in an instance and *poof* shutdown. That was about 10 minutes ago. Oh yeah, could it also possibly be my video card overheating? Neither the vid card or cpu heatsink seem to be anywhere near hot though.