This would be telling you how to bypass it. And we have no way to verify that its not you who stole it. So telling you will not happen as the one doing it would probably hit a ban for helping you to break the law. If it is your pc take it to a pc repair shop to have them help you would be my best advice. But sadly we have noway to know if you recovered it or stole it.
I definitely do feel bad about bending the rules in this case, and it kinda makes me hypocritical to give advise in this case, but it is better than how every 2nd person goes around telling people to use illegal OS licenses all the time.
If he were a thief that goes around stealing computers all the time, he probably wouldn't be in here asking about how to get rid of a BIOS password to begin with. Such people would already know how to do it or just google up the answer without trying to publicly draw attention to themselves.
Only a few times I have seen someone come in here wanting aid in learning how to do something clearly illegal out of many hundreds of threads. I never assist with those threads and if someone is thinking about breaking a real life law I almost always point it out and advise against it.
Anyway, here is hoping I don't get banned ~