hi all i bought crisis 2 off steam and it wont keep running after about 5 mins, no matter what i try to play the same thing happens, crisis, crisis 2, crisis 2 multiplayer after 5 mins the screen goes black then it will come up crisis 2 not responding. iam running windows 7, i7-2600 3.4 ghz, asus geforce gtx 570 card, 8 gig ramand a benq monitor. hope someone can help because i have tried a hell of a lot of stuff and nothing has worked. the game is dx11 and high res patched.