There is a hidden account for Administrator in Windows 7 and Vista. Some software require this administrator account so as to run, install or uninstall. Let us see how to enable the hidden administrator account in Windows 7 and Vista.

1. Click Start button or Windows key.
2. Right click on Command Prompt and click on Run as administrator.

Type the below command in the Command Prompt:

c:\> net user administrator /active:yes

Log off from that user account or restart the system and now you can see the hidden administrator account in the Windows logon screen. If you want to disable that account just execute this command at the Command Prompt:

c:\> net user administrator /active:no

If you forgot Windows login password on Windows 7/Vista/XP, you can use Password Recovery Bundle to reset lost administrator/user passwords, unlock any Windows account which is disabled or locked out.