Help, Please?

Hello everyone. I have a slight problem with Crossfire. I installed it about one hour ago.
I did the patch thingy and all.
But when i start the game(Clicking START)It asks if the patch may access my drive(For the second time!)
So i click: YES. It starts a little picture with Crossfire comes up. Game guard prepares itself, and BOOM! I get some sorta blue screen thingy and the computer restarts.
If you need information i can provide you with:
Operating system: Windows 7
Computer: ASUS? :O
Graphics cards, drives, blablabla etc: Just got me some pretty new ones.

HELP me please, dear people out there. I would give my right arm for this.(Uh well, not really. How am i supposed to play then?)