1, right click on "My Computer", Pop-up shortcut menu click "Management" command
2, open the Computer Management window, in the left of the console tree window to expand the "Local Users"--"users"
3, in the right window to find the account named "Administrator", the right mouse click "Rename", type a new name, press ENTER
4. Method 2 Click the "Start" button in the lower-left corner of the desktop, Pop-up Start menu window click "Run" command
5. Enter the "secpol.msc" command in the Open Run box and click OK to open the Local security policy
6. In the console tree window on the left, expand local policy--security options
7, in the right window to find and double-click to open the account: Rename the system Administrator account project
8. On the Local Security Settings tab, type a new name for the system administrator account, and click OK to close the Local Security policy window
If you cannot rename it, you can use the following methods
Local policy--security options--Renaming the system administrator account