Thank you for your prompt and informative reply. However, I could not use the Windows uninstaller since the AMD programs did not show up there. I downloaded the AMD cleanup utility and it removed many, but not all, of the files. I finally deleted the Windows AMD directory and any other AMD files that I could find. I followed this with a registry cleanup (created a restore point first). So far, my computer is working fine without the AMD files. Since I don't play computer games, I doubt if I will install any new AMD files.
