Administrator account exists in Windows Vista, 7 and 8 and is hidden by default. It does not exist in Windows XP and older versions of Windows.
Administrator account purpose
The purpose of administrator account is to fix problems that couldn’t be fixed in normal situations. Administrator account should be disabled after using because inexperienced users could do a lot of damage. It can be enabled through CMD or registry.
1) Via CMD
Step 1. Open CMD with admin rights. To do this, search for “cmd” in the start menu, then right click it and select Run as Administrator.
Step 2. Run the following command:
net user administrator /active:yes
Step 3. You should see a message that says it is done successfully. Now log out of your account and you should have a new account available on the login screen, called Administrator.
Step 4. When you finished what you wanted to do, open CMD as admin again and run the following command
net user administrator /active:no to disable it.
2) Via registry
Step 1. Press Win + R to load the Run window.
Step 2. Type in “regedit” without quotes and press Enter.
Step 3. Go to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\SpecialAccounts\Userlist.
Step 4. Right click and create a new DWORD entry.
Step 5. Name it “Administrator” without quotes.
Step 6. Right click it and select Modify.
Step 7. In the Value data text box enter 1 instead 0.