My brother got a laptop from a school that they were going to throw away, and it has all the admin passwords that were used on it and she can't do anything without it popping up, I was wondering if there is any way to disable the passwords?

Many thanks in advance.

We do not provide advice on cracking the Windows passwords. Unfortunately you will have to get this info elsewhere, Sorry. We have no way of determining the actual ownership of the PC in question.