Im having the same problem as several other people. While playing some (not all) games my computer restarts suddenly without any noise or warning. Games that this happens to are (Counter Strike Source, Battlefield 2, Mx vs. Atv Unleashed) games that do not shutdown are (Quake 4, Call of Duty) etc.. However if it is hot enough in the room, even while typing up a paper in Word, it will still restart. However the CPU temperature is currently running at 30C and never climbs above 40C, the case temperature is 13C, and I dont think my video card (radeon 9800 Pro) has a temperature monitor feature. Its very spotty but i never get an error message or anything. All my comp specs are in my user cp and i have the minidump here. So if anybody could tell me what it might be, i would appreciate it. Thank you.