How to Change the Administrator Password With Net User
The Windows command line offers several options for your user accounts, including changing a user's password. The "net user" command allows you to change a user's password quickly without navigating to the user interface. Some administrators prefer this method because it's faster and more convenient than opening the graphical interface. If you have administrator privileges, you can use this command to change the information of any user on the network.
Click the Windows "Start" button. Type "cmd" into the text box, then press "Enter" on your keyboard to open your command line.
Type "net user /?," then press "Enter." All the syntax and options for the "net user" command will appear on your screen.
Type "net user administrator password" (without the quotation marks), replacing the word "password" with the new password you want to set for the administrator account.