Enabling or Disabling the Built-in Administrator Account for windows 7

Disabling the Built-in Administrator Account

Original equipment manufacturers (OEMs) and system builders are required to disable the built-in Administrator account before delivering the computers to customers.

• Run the sysprep /generalize command
  
  When you run the sysprep /generalize command, the next time the computer starts, the built-in Administrator account will be disabled.
  
  -or-
  
• Use the net user command
  
  Run the following command to disable the Administrator account.
  
  
  net user administrator /active:no
  

  You can run this command after configuring the computer, before delivering the computer to a customer.

Enabling the built in administrator account

Use the net user command 

Run the following command to disable the Administrator account.

net user administrator /active:yes