Try this…
E'''ntering BIOS in Toshiba Portege'''
# Turn off your Toshiba computer.
# Power on the machine.
# Press '''F12''' key repetitively as soon as the booting begins until the BIOS menu screen appears.
Hopefully there is option to restore defaults at that point. If not more ideas here…
https://itstillworks.com/reset-toshiba-cmos-2500.html
The warnings at the bottom of that page sound kind of discouraging. Maybe a bootable USB windows image might allow resetting that CMOS. This is why I keep all my passwords encrypted and backed up on removable media (USB). Yes it is a hassle but so is losing your passwords.
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