Trouble with media players

Just recently, I have not been able to view movies properly in any of my players. I have tried Windows Media Player, Real Player, Quicktime, and Winamp, and I get the same thing with each. The movies run fine, except for all the colors seem like they are inverted. They are just completely different then they should be. I tried reinstalling my video card drivers, I installed the DivX codec, I installed the new version of DirectX, however it is still happening. Any help would be greatly appreciated