Please I need Help with my PC!!!!!!!!!!!!

HI, I upgraded my Pc 2 days ago, I upgraded to this:

Asus P5N32-E Sli Plus

P4 3.0ghz (old one i had)

2gb Ram

EVGA GeForce 8600GT Superclocked (not rly "super" clocked)

and my problem is this one: I installed windows again, installed the lastest drivers for both, motherboard and Video card, and each time i want to install a game, my Mp3's drivers (creative ZEN), the screen goes black, my monitor says that ther's no signal, and if i'm playing musicit loops.

Please I need a hand here cuz i've tryed everything i can think of, i even reinstalledwindows XP again, formatted the HD, and it's still the same.

Thanks!!

does it happen to every game u instal?

With the only game that didn't happen was Company Of Heros, but it's not only games, is other programs that i try to install also, like my Creative Zen's drivers