Make & Model of your GPU card and computer information including OS version?
EDIT: sounds like the AMD GPUPRO wasn't completely uninstalled from your computer. Most likely there are some leftover Registry entries that is showing it still installed.
Try running this MS Troubleshooter for installing and uninstalling software and see if it helps any. I have attached it to this reply for you to download and run.
Also see if DDU without internet connection will completely uninstall the GPUPRO driver and related software,