Download the Toshiba service manual for your laptop model.
It can be a procedure as simple as clearing the cmos or as complicated as home brewing your own loopback device "provided your laptop has a parallel port ".
If clearing the cmos doesn't work, you can try to build the Toshiba Parallel loopback.The device, named "loopback" , it can be made out of any parallel wire with 25pins connectors (db25). Connect these pins: 1-5-10, 2-11, 3-17, 4-12, 6-16, 7-13, 8-14, 9-15, 18-25
I'll give Toshiba one thing when they make something secure they make it a royal pain to unsecure it.