How to Reset Local Group Policy to Default in Vista, Windows 7, and Windows 8
The Local Group Policy Editor is only available in:
Vista Business, Ultimate, and Enterprise editions.
Windows 7 Professional, Ultimate, and Enterprise editions.
Windows 8 Pro and Enterprise editions.
RD /S /Q "%WinDir%\System32\GroupPolicyUsers"
RD /S /Q "%WinDir%\System32\GroupPolicy"
gpupdate /force
Cheers
Rescue PC