Penumbra Requiem: Graphic glitches then crashes.

[jens]

Game from steam? If so, do a file integrity check on the game in the steam client.
If that does not help, make sure to update the drivers for the nvidia graphics card by visiting and downloading from nvidia.com. If that does not help, then use the nvidia control panel, to specify that the nvidia card should be used when playing penumbra requiem (in case you have a integrated graphics chip from intel, which might be what the game runs on at the moment).