My laptop is running Windows XP Pro and has an ATI 3D Rage LT Pro Video card. Under Control panel/System/Hardware/Device Manager an error is flagged in the Sound, Video and Games Controllers. I am informed that the ATI WDM Bt829 Video is unable to load. The driver is 18.104.22.16818 Microsoft Windows hardware Compatibility Publisher and is digitally signed. Any ideas? I got no help from ATI.