Screen dims when light sources go offscreen

[plutomaniac]

Mmm, I remember such problem that a user had some time ago. Let me find it with search. In the mean time, make sure you have this installed:

http://sites.amd.com/us/game/downloads/P...-64.aspx#1

Attach us here you hpl.log file found under Documents/Amnesia/Main folder.

EDIT: Found it, this is exactly your problem:

http://www.frictionalgames.com/forum/thread-5111.html

Solution: Run the game in windowed mode and not full screen