Well, my problem is that, when i'm playing Crysis 2, my PC crashes, in SP or MP. Ctrl + ALT + Sprm doesnt work, and i must restart the PC. Idk what i need do. I can't play more of 5 minutes for this ****** problem, and, i had this problem since the 1.0 =/

My PC have a Intel i7, Nvidia GTS 250 with 1 GB, 8.0 GB in RAM, Windows 7 x64 Professional and a lot of coolers.

PD: Srry for my english, i'm learning it xP

Raise the voltage on your GPU by 0.05 volts, use 'MSI AfterBurner' for this.
Suerte.

I can't raise the voltage. My GPU doesnt' support voltage control '~'

Another idea?

I can't raise the voltage. My GPU doesnt' support voltage control '~'

Another idea?

What are you're full specs? PSU?

Set your GPU fan at 100%, loosen your RAM timings, if you have 8 8 8 24, make it 9 9 9 24.