if that is the case... use Regedit and find the keys associated. Typically any thing like the path, the name etc will help.
Just delete them.
If you are non-IT person, I would strongly advise you to backup, if not image, your computer before playing with the regedit.
FYI. Mine works very well just that you have to use the mouse instead of keying in the numbers. I first thought it won't take the mouse but later found out entering numbers will do reverse.