User Profile Service: Service Failed Logon

I just opened a computer and setup a computer preinstalled with Vista. I set
up all the 'regional information', and set up the first "User". After all
the updates and 'system scans' were completed, I came to the "User Logon"
screen. I clicked on the user, and I get the message "User Profile Service
Failed the logon. User profile cannot be loaded". Being that this is the
only user, there is no way to log on as the admin. to change any settings.
What is the next step?

[Stroud]

This issue may occur if the user profile was manually deleted by using the command prompt or Windows Explorer by a user or by some program. A profile that is manually deleted does not remove the security identifier (SID) from the user profile list in the registry. Since the SID is still present, Vista will still try to load the profile by using the ProfileImagePath that points to a nonexistent path. Therefore, the profile cannot be loaded. Here's how you can solve this. User Profile Service: Service Failed Logon error in vista