"Problem G" Screen is cropped

[plutomaniac]

1) Make sure your graphics card drivers are fully updated and that the nvidia or amd control panel is not altered.
2) Follow Problem I, just the integrity check.
3) Follow Problem H, it might help.
4) Right click the game's .exe file(Penumbra.exe), go to compatibility tab and select Windows XP Service Pack 3, Disable visual themes, Disable desktop composition & Disable display scaling on high DPI settings.

By searching I found these three topics that might help you:

http://www.frictionalgames.com/forum/thread-4297.html
http://www.frictionalgames.com/forum/thread-4090.html
http://www.frictionalgames.com/forum/thread-5011.html