yeah basically many gigabbyte mobos all have this issue.. my ds3l had this issue...
there is a microsoft hotfix kb888111 that you can email microsoft support for and they email you this file... alsoif you dont want to wait, reinstall windows, and install these drivers from the website...also try installing ac97 drivers first and then the hd drivers
i just reinstalled XP and downloaded new drivers from the gigabyte site and it worked...