gamma

[Bek]

Changing settings shouldn't affect your hardware at all. Is it permanently blue? Like it's lost the other colour channels? Test the monitor on another pc if possible, same with the GPU. What type of monitor is it and how does it connect to your PC? VGA, DVI, HDMI? You could also google your problem with the monitor model and see if anyone else has the same issue.

Or does this only happen when you play Penumbra?