Video quality is questionable

I've recently reinstalled windows on a new hard drive as well as reinstalled Itunes and imported my libraries from my secondary drive. The video quality in ALL of my videos seems a bit questionable. It's a darker hue (maybe a bit of blue) and not as sharp as I remembered it. I've uninstalled and reinstalled iTunes and graphics drivers trying to correct it but no help.
Other media files (like AV for Windows Media) look fine. Is there a setting in windows I need to change so I can see my videos in the picture quality I remember? Is there anything I can at least use to adjust the contrast?

Hello elpato54
Check out the troubleshooting steps in the article below to isolate and resolve video playback issues in iTunes.
Troubleshooting iTunes for Windows Vista or Windows 7 video playback performance issues
http://support.apple.com/kb/ts1718
Thanks for using Apple Support Communities.
Regards,
-Norm G.

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