Can't Access Admin Account

[SuperMikey]

My admin account icon disappeared from the login screen after rebooting .
The only change I can recall is installing Turbotax Deluxe. I can see and
enter another limited account which was setup a long time ago, but I can't
install utilities (TweakUI) in there. Tried reboot in Safe Mode - the login
screen shows no accounts available. So I hit Ctrl+Alt+Del twice to show
type-in login window and tried my admin account credentials. Still rejected.
Just in case, I logged in by literally typing in "administrator" - this got
me in as a new guest account called "administrator" without admin rights.
Any suggestions for logging into my admin account? Thank you.

 

[Thorsten Matzner]

My admin account icon disappeared from the login screen after rebooting .

Check the settings in TweakUI > Logon. TweakUI is available from
http://www.microsoft.com/windowsxp/pro/downloads/powertoys.asp.