Como remover a palavra passe no toshiba satellite

If it is a password on boot (before the OS loads) there is nothing you can do about it, except taking the laptop to a Toshiba authorized Service Center to have the password reset or removed. You may have to pay for the service if laptop is out of warranty.
For a user password you might try reinstalling the OS (Recovery). There may be some programs on the Internet that may retrieve a password. Launch a search with Google or other Internet search engine.