ok so you may or may not know I recently had to reinstall windows and I have update my PC to SP3 but for some unknown reason every time I try to play a video on WMP be it a downloaded vid or shop bought dvd it appears really dark and I cant see hardly anything, iv tried installing different codecs and whatnot but to no avail it always appears dark.

Can anyone help me sort this out as it is driveing me up the wall.

EDIT: Oh and im useing WMP 11