Allowing dos and regedit in a restricted Windows

Open Notepad and type the following:

REGEDIT4

[HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrent
VersionPoliciesWinOldApp]
"Disabled"=dword:0
[HKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrent
VersionPoliciesSystem]
"DisableRegistryTools"=dword:0

Save it as something.reg then run it. its that simple