Try resetting CMOS by unplugging it and taking the battery out then take the battery(small button battery may be connected by a jumper under the keyboard) out of the MOBO for a few minutes and replace it see if that works, this won't negate the need for a password but it will clear the classical CMOS parameters. After the power button is hit repeatedly hit F2 to get to the Bios then disable fast/flash boot in Bios if needed for ease of working on it. If that doesn't work it looks like you may need to take it in to get the bios reflashed. Looks like the bios on
Toshiba machines is pretty flakey.
Just my 2 cents do with it what you will.