Need Help ASAP Radeon 9800 Pro

[FroztBite]

Same problem over and over again. My radeon 9800 Pro will not work on my XP for some reason. It will work on the same computer with windows 98. Everything runs smooth with my card until i install the latest drivers. I have used driver cleaner. Nothing, downloaded older patches nothing. Update windows..still doesnt work. After i restart my computer after installing the drivers all of a sudden my monitor will lose signal with my card. HELP ME PLEASE ASAP! Thankyou for your time.

 

[LiLithTecH]

What type (CRT or LCD) monitor?
Make and or Model monitor?