Dear,

For windows versions prior than vista:
Go to start,run,at the run dialog box type regedit press enter,expand the registry key hkey_local_machine,and the following folders and subfolders:software,microsoft,windows,currentversion,run. Now take a look at the right side of the screen and delete the entry called BDWizReg.

For vista: go to start,type regedit in the windows search text field press enter,for the rest you have to follow the previous instructions for the older windows versions.

Best regards
Niels