since you have the password, go into the BIOS itself, and go to the security section, and disable the password. Then the computer won't ask for it anymore.
And, if you don't want to have to deal with sending the unit back to Toshiba, I suggest you either write that password down somewhere, or clear it completely once you are in the BIOS. If you forget that password, the only way to get into the BIOS to get rid of it is to send it back to Toshiba. They have good security.