Penumbra Overture - problem with graphics card

[plutomaniac]

1) Download Driver Sweeper and install it. Do not run it yet.
2) Uninstall the AMD drivers and all of their components.
3) Now run Driver Sweeper. Select all AMD, ATI, NVIDIA, PHYSX traces and delete all the results.
4) Reboot your system and then download this:

http://support.amd.com/us/gpudownload/wi...ng=English

5) After installation reboot your system again. Make sure that in device manager your AMD card appears correctly and try launching the game again.