This is only for Windows 7. The app will remove all traces of the Catalyst driver and is much kinder to the system than Driver sweeper.
Download v. 1.2.1.0:
AMD Catalyst Un-install Utility
Description:
This standalone uninstallation utility will clean your system of any existing AMD Catalyst™ drivers to prepare your PC for the clean installation of a new driver version. Currently supports Windows 7 at this time.
After running the utility, a restart of the computer is required to fully remove driver files that may be in use during the uninstall process. Installing a new driver prior to a system restart may cause the operating system to not function properly.
Download v. 1.2.1.0:
AMD Catalyst Un-install Utility