Losing Video

[radar_1_2000]

Just added a new hardrive to my system. Loaded Windows XP Pro on it. I can now boot to old hard drive with W98, or to new one with XP Pro.

I'm occasionally losing video when in XP. The best is example is when I'm using Windows Media Player to play music and have a visualization playing. As soon as I try to go to FULL SCREEN mode, I lose video...... the music keeps playing. It may work a few seconds, but then video goes away.
Also have a game that does this after playing for several minutes.

Got to reboot then and restart.....

Any ideas? Not having problem in W98. I have the latest BIOS, video driver and sound drivers I can get for XP.
Used to have this problem in W98 when doing Video Capture, but it stopped after updating my BIOS

Have ATI Radeon, 64MB video card. ASUS A7V MB. Soundblaster Live Platinum Sound card. 512 MB RAM. 900MHZ.