Can't log onto the computer. How do I reset the BIOS password on Laptop Toshiba Satellite M55-S325 .

Even if you could enter the BIOS, anything you change won't help you logon to Windows. And you can't change the BIOS password without entering the current BIOS password. There is no way to reset a laptop password as can be done with a desktop. You will have to contact Toshiba Support as stated above & be prepared to provide proof of ownership. I believe this is the link phil22 meant to post:
