Step 1 : Select Start in the search box, type Run command, a Run dialog box appears on the screen
Step 2 . You type gpedit.msc and press Enter as shown below
Or you can Search directly gpedit.msc in the Search box at the Start button of Windows 7 or on the Charmbar of Win 8, 8.1, 10. Then select open as shown below:
Step 3 : Display on the screen a Local Group Policy Editor window
Step 4 : Select the order according to the path to the User Configuration / Administrative Templates / System section as shown below
Step 5 Next, select the right side, double-click on ' Prevent Access to registry editing tools '.
Step 6 Inside the Prevent Access to registry editing tools window select Not Configured and click Ok to enable the registry editing. Note that you remember to restart the computer after completing the above steps
You can also use Notepad to save the following code as an EnableRegistry.bat file
reg add 'HKCUSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem' / t Reg_dword / v DisableRegistryTools / f / d 0
Then run the newly created EnableRegistry.bat file under Admin (Right-click select Run as Administrator) and then restart the computer or Log Off and Log in again.
You can run the command line directly from Method 2 in the Run window.
Press the keyboard shortcut Windows + R to open the RUN dialog box. Then Copy and Paste the following:
REG add HKCUSoftwareMicrosoftWindowsCurrentVersionPoliciesSystem / v DisableRegistryTools / t REG_DWORD / d 0 / f
Press Enter or OK. Then also restart the machine.
Good luck!