Originally posted on TCAT Shelbyville - Technical Blog:
Have you ever noticed the administrator account doesn’t show up during logon with Vista or 7? Well here’s what you can do.
Go to a command prompt as the administrator.
- type cmd in the search box and then right click when it is found and select Run as Administrator
- Type Net User Administrator /active:yes
The Administrator Account should now appear as an option on the Welcome Screen. Log in at the next reboot and set a complex password. (Don’t forget it!)