Hi Ksp672,
Try this. Download the SouthBridge driver first of this link:
http://game.amd.com/us-en/drivers_ca...ntegratedip-xp
Reboot and install the Display driver ONLY off the same link.
Some Systems (like toshiba and Sony) will only install these drivers and not the Catalyst. Remember you down graded, I can not guarantee the results.
Let me know how you make out.
Thanks,
Bill