If you rename the built-in local Administrator account and then attempt to log on to Recovery Console, you are still prompted for the password for the account named Administrator.
Recovery Console requires that you log on by using the password for the built-in account that was originally named Administrator. The text on the Recovery Console logon screen does not change to reflect the new name of the built-in Administrator account. Recovery Console will accept the password for the renamed user account and log you on.
For additional information about Recovery Console, click the article number below
to view the article in the Microsoft Knowledge Base:
Description of the Windows 2000 Recovery Console