How can I recover my password on my Windows 8.1 laptop?

Nick has forgotten the password on his Windows 8.1 laptop. How can he crack it so he can give it to his sister? Leo says that there's password crackers that can work with Windows 8.1. If he logged in using his Microsoft account, however, he can go to his Live account at live.com and reset his password. Then he can get into it and do what he needs to do.