nvidia GT 555m problem

Hey guys,

I got Alienware M14x, I love this machine! But there I got the first problem.

My graphic card Nvidia doesn't work in games! it is cleaned up, it isn't overheating (all the time on cooling pad) 

Drivers are installed corectly, even in diagnostic the graphic card works (it looks like) I even reinstalled the system and found BIOS update.

Iam in despire :-/ is possible that card is disabled in bios? where? i cannot find it.

Would be great if u help me,

Thanks,

Honza