For the assessment to run correctly, you should enable automatic logon with the current user account or set up a single user ...

For the assessment to run correctly, you should enable automatic logon with the current user account or set up a single user with no password. If your computer is not configured in this way, user interaction is required to complete the assessment, which will have a negative effect on the assessment results. If the current user account is not used for automatic logon, the assessment will not be restarted after the computer reboots until the current user logs in again. For more information about how to turn on automatic logon, see the Microsoft Support article http://go.microsoft.com/fwlink/?LinkId=245454. If a single user account with no password is used, you will still see this message, but it can safely be ignored.