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Windows 7 -Disable access to the registry

Implemetation
Revert changes

Under Windows 7 you can easily disable the access to registry editor to restrict users having limited administrative rights, to make modification to the system.

Implemetation

Click the Start button. In the Search field, type regedit.
Right click on the regedit.exe icon and click Run as administrator.

Expand the following key:

HKEY_CURRENT_USER/Software/Microsoft/Windows/Current Version/Policies/System.

Click on the Edit menu (at the top), click New then DWORD Value 32bit.
Named it as DisableRegistryTools and double click on it and set the value to 1 and click OK.

Expand the following key:

HKEY_LOCAL_MACHINE/ Software/ Microsoft/ Windows/Current Version/Policies, System

Click on the Edit menu (at the top), click New then DWORD Value 32bit.
Named it as DisableRegistryTools and double click on it and set the value to 1 and click OK.
Close the Registry Editor. Restart your PC and form there access to the registry access will be blocked

Revert changes

To regain access to the registry, click the Start button and in the search field type the command gpedit.msc.
Go to User Configuration/Administrative Templates/System, and double click on the parameter "Prevent access to registry.."
Check "Disabled" and click OK. Finally, restart your computer to regain access to the registry.