NEED HELP WITH MINECRAFT BAD VIDEO CARD DRIVERS WINDOWS 7 (READ DESCRIPTION)?

I was running minecraft before on windows xp and it did fine then today i install windows 7 and it says i have bad video cards when there are very good (ATI Radeon) the drivers on everything is updated i dont know what to do please help.|||Did you reinstall the video card drivers?You should install the video card drivers which are supporting windows 7.According to me message occured because of video card drivers are missing.