|"I BOUGHT IT USED"|
You didn't think to check the laptop out prior to paying?
Take it back to the person you bought it from.
Doesn't sound like a BIOS password anyway. Sounds like a hard drive password. You only need a BIOS password to enter the BIOS to make changes.
Either way, Toshiba is the only place to help you. If you didn't steal it then contact them.