Restart your computer and boot into Safe Mode, following the instructions at the start of the article. Click on the Start menu, type Regedit and hit Enter to start the Registry Editor.
To reset a corrupt profile in Vista/7/8:
- Open regedit with administrator rights
- Find HKLM\Software\Microsoft\Windows NT\CurrentVersion\ProfileList\
- Delete the root key that includes the username you want to reset (DONT remove the others)
- Rename or remove the username directory under c:\users
- Reboot and log the user on to recreate the profile, reboot again to apply GPO’s if it’s a domain workstation