Using a computer's administrator mode is helpful for parents or computer owners to share the computer without sharing access to all of the system's settings. If you forget the password to your administrator account, or need to troubleshoot or make changes to the computer, you might need to create an administrator account. It's a simple process, and almost anyone can do it. With another user account and a few minutes of time, you can create an administrator account.
Log into another account on the computer. An account with limited computer privileges or an administrator account will work.
Open a command prompt as an administrator. Click start on the taskbar at the bottom of the screen, and open up the start menu. Type "command prompt" in the search box. When the command prompt window pops up, right-click on it and click "Run as administrator."
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Howtogeek.com says to type the following in the command prompt word for word: "net user administrator /active:yes". Maintain all spaces, and make sure to include the slash and colon.
On the message stating the change, click "OK."
Log out of the account or reset the computer.
Upon accessing the login screen, you will notice a new administrator account with no password. Click on the account to proceed into Windows as an administrator.