COD4 problem >_<

So I've had COD4 3 days, at the first day the game was working perfectly, but today when I started to play it some things were 100% black. for example: guns, guys, bushes, cars, trees etc. It is really annoying, because "sometimes" you cant see if there is a guy behind a car or proning in a bush or smth like that :p

some screens:





I tried my own config, default config & davy's config, none of these solved this problem :E

system specs:
CPU: AMD Athlon 64 3800+
Graphics: GeForce 7600GS 512MB


plz help me out! I'll give you a cookie @ CDC4