Game restarts my pc

[G0ons]

Turned down resolution?

And when installing new drivers, did you make sure to first uninstall the current and reboot?

It might also be as bad as some kind of overheating.

Yep. tried that. went to 1028x768

I orginally tried this game on 10.6. It crashed so i unistalled the drivers and installed 10.8 which is what im on now

I play Bad company 2 every day on max settings for approx 1hr, so i'm guessing its not overheating 10 seconds into Dark Descent.