How to enable/disable hidden administrator account in windows 7 or vista

1)Enable hidden administrator account


open cmd as administrator by right-clicking and choosing “Run as administrator” (or use the Ctrl+Shift+Enter shortcut from the search box)

then type in  


net user administrator /active:yes


now you can see following screen

now logout from current user account.then you can see  the Administrator account as a choice.

2)Disable administrator account 


Make sure you are logged on as your regular user account, and then open cmd as administrator and type in


net user administrator /active:no

so now administrator account is disabled.