The master Administrator account is not visible by default in Windows 7 or Vista.
However there is a simple way to enable it.
This account has complete access and permissions on the computer.
The simple steps to enable and disable the master Administrator account in Windows 7 are as follows:
Enable Administrator Account
- Open the command prompt in administrator mode
- Type ‘cmd’ in the start menu search box:
- Right click on the Program ‘cmd’
- Select “Run as administrator”:
- Type ‘cmd’ in the start menu search box:
- In Command Prompt:
- Type in the command ‘net user administrator /active:yes’
- And you are done !
- Logoff and login again and you will now see an option for Administrator login!
- Note: It is advisable to create a strong password for this account.
- Type in the command ‘net user administrator /active:yes’
Disable Administrator Account
- Login with your current user account.
- Open the command prompt as per instructions provided in Enable Administrator Account, Step 1 (above).
- Type in the command ‘net user administrator /active:no’
- And you are done!

I am working on a user in a domain and has de right as admin, and I also know the adminstrator password of the computer. later they block all mean to reach administrator account and futher change my domain user right. Can anyone help me? I have try all of de above methods, but it demand domain admin password all de time. I also try with the adminstrator account, but it said the account is disabled. Please help!!!!