This is an odd one!! If I run 98 the PC runs perfectly, all images display properly, dvd's play perfectly, in other words it's 100's. If I load 2000/XP JPG files seem to be corrupted and DVD's quality sucks! Games work pefectly though, even ran 3dmark 2001 for 5 hours with no problem or image corruption. I've had the card swopped out already. I've reloaded from scratch numerous times. My question is, does 2000/XP use differant instructions on an AMD processor to 98? Any Ideas??