Hi Ide!
If you have other Admin's with system privileges on your system, let them
reset your password. If you don't, you will have to stop your TSM server and
start it in the foreground. You are then running in the console mode and you
can create/update admin accounts. If creating an new one, don't forget to
grant the account system privilege after registering it.
Kindest regards,
Eric van Loon