My new computer shuts down completely when playing DirectX games like COD and Crysis. First I thought it was a heating problem but I ruled that out when I kept the case open and monitored the temparatures. It can also happen within the first minute of a game, but it could happen at a later stage as well. There's no real pattern.
My system specs are:
Windows 7 RTM x64
AMD Phenom 9550 Quadcore Black Edition
4GB DDR2 memory
Gigabyte M61PME-S2P with the F4 Bios (latest)
Gigabyte GV-N250 (Geforce 250GTS with 1GB of memory
from Nvidia installed
Thank you in advance for your feedback.