meldest du dich mit dem konto "administrator" an?
The Recovery Console is protected by requiring the password for the local Administrator user account. The local Administrator account is stored in the SAM database rather than the Active Directory. For workstations and member servers, the Administrator password can be changed with the Computer Management Console. On domain controllers, the Local User and Groups are not accessible. If the local Administrator password is forgotten, it can only be reset by
Restoring the Registry from a backup, or
Demoting the server and then in the promotion process the Administrator password can be set. ..