Error Message:

The system cannot log you on to this domain because the system's computer account in its primary domain is missing or the password on that account is incorrect.

Explanation:

You might have typed the wrong password. Or the trust relationship between your domain and the domain onto which you are attempting to log on has been broken.

User Action:

Retype the password. If this fails, contact your domain administrator. If you are the domain administrator, contact the administrator of the domain with which trust has been broken. Then use Server Manager to reestablish the relationship.