hi all, for some reason, some games do not run, instead, the game either doesn't run at all, while other games run with a blank black screen with no sound and nothing...for example Battlefeild badcompany 2, it opens with a black screen with no sound, it simply crashes

I have the lates drivers for all my hardware.

Graphic card: ATI RADEON HD3850x2
motherboard: asus maximus formula
soundcard: soundmax (analog devices)
RAM: 4GB DDR3


PLEASE HELP!!!