If taking out the battery for 5 minutes while pressing the power button didnt work, then the the password isnt stored in the Bios but that of a non volatile eeprom chip. Pretty much, the information on that chip doesn't get erased when power is removed from it. They use a special adapter that plugs into the computer port and reset the Bios.
Dell used this in their inspiron 1000 series laptop.
Without this, your only option is to contact Toshiba and ask for a master password. You'll have to verify ownership of the laptop.
Hope this helps!
, Carl Lindsey
I just emailed a former toshiba tech I know.
He should be able to use the challenge code on your computer to give you a bios reset code.
In the meantime call this number to talk to toshiba and mention that you have a challenge code on your laptop that needs to be analyzed because you forgot your password. You can retrieve this code that changes everytime you access it by pressing ctrl-tab-ctr.
I'll keep you posted.