What could be causing whacky video gamma?

[Saga]

Just did a fresh reinstall of WinXP Pro SP1 and updated all the pre SP2 service packs. I have two systems sitting side by side which are practically identcial, and both went through the exact same WinXP installs, sharing all programs after that from a networked machine.

The only difference between the two machines are the graphics cards. One is running a X850XTPE, one is running a 6800Ultra. The 6800U appears to have crazy gamma while the X850 shows video's normally.

Is there some setting I somehow messed up and/or do not know about?

This happens when using Windows Media Player, or Divx Player.

 

[Creideike]

Do you have the newest Nvidia drivers (77.72) for the 6800? You have to restore the factory defaults to correct the gamma issue. Personally I just am using the previous revision of their drivers (71.89) as a result of artifacts and weird graphics problems in some of my games.

 

[Soccerman06]

Does it only happen when you turn on a video (not game), does it look like a crappy cartoon? Because I have that problem with my older comp. Its using a 9800xt and has all the latest bios, the video card has been doing this since catalyst 5.6 (I have 5.7 now). I have no clue whats wrong because it only happens on certain videos and not others. I have no idea whats wrong. Sorry

 

[lavaheadache]

read this thread(http://forums.anandtech.com/messageview.aspx?catid=31&threadid=1639797), It will solve your gamma problem

 

[Saga]

Creideike was right, popping back to the last drivers fixed it in a snap.