Disable Windows Vista's built-in administrator account

Method 1

With the opening of the same steps, with administrator privileges to open the command-line window, enter:

Net user administrator / active: no

Method 2

To disable the built-in "Administrator" account, or through the Windows Vista system ready sysprep.exe tool, it allows Windows Vista to return to reset or clear the account information to the initial installation of a state.

In the search box or the command line, type:

Sysprep / generalize

In this way, when to restart the system, built-in administrator account that is back to the disabled.