Computer step by step
 Make your Pc better
Type C:\Windows and press Enter
In the windows folder you can find regedit file
Disable:          

When you try to open Registry Editor this message will be displayed:
Registry editing has been disable by your administrator.
Type gpedit.msc and press Enter
Please confirm UAC pop-ups in order to continue
In the Group Policy window please navigate to User Configuration -> Administrative Templates ->
System and open Prevent access to registry editing tools
The Default state is Not Configured and Registry Editort is Enable
To Enable regedit select Disable
To Disable regedit select Enable

To finish press ok button and close Group Policy window
Windows:          
This method shows you how to Disable/Enable Registry Editor using Windows Explorer and
default Administrator account because we can`t use Command Prompt.
Please perform the following steps:

Please go to Pearl button (Start) and click on the Start Search
For more information about the change from Start to Pearl button click here
Type cmd, right click on cmd icon under the Programs and click on Run as administrator
Please select, right and copy a registry key from below, then right click on command prompt window
, select Paste and press Enter

To Disable Registry Editor:

REG add  HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 1 /f

To Enable Registry Editor:

Note: When you try to enable registry editor you will receive:
ERROR: Registry editing has been disabled by your administrator

REG add  HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableRegistryTools /t REG_DWORD /d 0 /f
Type net user administrator /active:yes and press Enter in order to enable default administrator
account
Then go to Start and click on Switch User
Please log on on the Administrator account
Please go to Pearl button (Start) and click on the Start Search
Type regedit and press Enter
Please confirm User Account Control pop-up
Microsoft official disclaimer

Warning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by
using another method. These problems might require that you reinstall the operating system. Microsoft
cannot guarantee that these problems can be solved. Modify the registry at your own risk.

Please navigate to HKEY_USERS a difrent user it will be like this:
S-1-5-21-3328385459-2160724153-741923063-1000
then go to \Software\Microsoft\Windows\CurrentVersion\Policies\System and locate
DisableRegistryTools registrykey
Double click on DisableRegistryTools and edit the value:

To Disable Registry Editor:

Change the data value with 1

To Enable Registry Editor:

Change the data value with 0

Close Registry Editor window
Please go to Start and click on Log Off
Please log on with your account
In order to finish please write in command prompt window net user administrator /active:no and press
Enter in order to disable default administrator account
Gpedit:          

Warning Computers running Windows Vista Home do not have access to Group Policy (gpedit.msc)
This method shows you how to Disable/Enable Registry Editor from Group Policy
Please perform the following steps:

Please go to Pearl button (Start) and click on the Start Search
For more information about the change from Start to Pearl button click here
Path:          
This method shows you where Registry Editor is located in Windows using Windows Explorer
Please perform the following steps:

Please go to Pearl button (Start) and click on the Start Search
For more information about the change from Start to Pearl button click here
Description:  

The Registry contains information that Windows continually references during operation, such as profiles
for each user, the applications installed on the computer and the types of documents that each can
create, property sheet settings for folders and application icons, what hardware exists on the system,
and the ports that are being used.

For more information please continue to read the official Microsoft article
How to Disable/Enable Registry Editor
Windows Vista Windows 7 Windows Xp
   
   
   
   
   
Description Path Disable Gpedit Back Windows Up Back