Setup Problems

Hello, yeasterday i reformated my computer because crossfire didnt want to work. Well it didnt do a ****. The installation won't even open up when i click it but ofcource when i try to start it on my own vps hosted from my computer on windows 7 it works... i installed the vps as a Windows 7 32 bit This computer is Windows 7 64 bit and here are my specs:

Nvidia Geforce 550 ti
4 GB ram
Intel core i3 -2100 3.10 GHz

Uhh i'm installing nvidia update drivers now (tried installing before the nvidia setup) and hoping it will work after that update. These things i've tried sofar:

Reformating computer
Turning off firewall
Vps (worked)(hosted on same computer)
Closing programs that may Block the setup
All Comptibilities

What actully happends in Processor list is that the program just closes without any kind of error. Hope you guys can help me i really want to play crossfire again!

Btw it's Windows 7 Ultimate!