I just bought a new PSU and video card so this problem might be related to that, but every time I fire up my favorite games (WoW and TF2), my computer will reboot without warning after playing for some time.
Here are my specs:
- Windows 7 64-bit
- Core i7 950 stock
- ASUS P6TD Deluxe
- 6 GB Corsair Dominator @ 1600mhz
- Radeon 5870 (slightly overclocked)
- Corsair 850W modular PSU (brand new)
As I mentioned, it started happening more frequently after upgrading to the new power supply. What would happen once a week before is now happening 3-4 times a day. I upgraded from a 650W Corsair.
EDIT: Clocking my video card a little bit lower fixed this.