Problems with Nvidia 8800GT

[Dedas]

Sounds like a driver problem as you said it works in other games. Something is called that isn't working I would guess. Try to reinstall the driver using this software. Be sure to follow the instructions. Uninstall -> Clean -> reboot -> reinstall.

Here is the link:
http://www.guru3d.com/category/driversweeper/

If that doesn't work try a different older driver just to make sure it is the driver and not the card. Be sure to reinstall the new one though as you wouldn't want to run new games such as Crysis with old drivers.