Hi, i've recently built a new machine with a 7950gt video card

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All drivers installed, and all updates for: Winamp, Windowsmedia player, Real player etc. have been done.
All clips are showing a dark red image and it's extremely hard 2 see whwats going on, any clues on what the problem is????
btw some clips work perfectly fine with DivX, otehrs do not.. what the **** is happening ?!?