To reset Windows password is easy. Try the following steps, you will login Windows with 5 minutes. But you should prepare a blank CD/DVD/USB.
Step1, Get an accessible computer, download the Windows password reset software from http://www.passwordreset.biz/, install and run.
Step2, Burn the software onto the CD/DVD/USB
Step3, Insert the burned CD/DVD/USB into the computer that you have lost login passwords. And then following the step by step wizard to finish password recovery!