i have been haveing this problem for sometime now. when i play call of duty, after about 2 minutes the game freezes and the screen flickers. or it just boots me back to windows and the game has dissapeared. or i get the blue screen with the driver irql error message. iv got a 3200+barton 2x512mb ddr400, msi k7nt delta 2 platinum, msi nx6600gt 128mb agp8x with the latest nvidia drivers(iv tried different ones and the same happens), 160gb maxtor sata. if anyone can help i would appreciate it.