Problem with X1800XT and Ati Tool

Specs
X1800XT 256mb
1.75GB of Ram
WD 160GB HD
Pentium 4 515 2.93 GHz
Epower 500W duel rail psu

Sometimes when I go to a site that has some type of video (windows media player movies mainly) on it, my screen goes some color (different colors each time). It also does it when I try to view a videoIt has something to do with Ati tool. I've changed things, but have been unsuccessful in finding the problem. Here's some screenshots.

Speeds when I'm not gaming




Overclocked speeds when gaming





3-D detection



Any help would be greatly appreciated. BTW I have tried switching the profile for when 3d application is closed to stock speeds, and have had the same results.