How to Change Windows 7/8 User Password Without Old Password Do you want to change your school labs pc password or change your friends or someone else? If so, then read this article..Becose here i m going to show you the most easy and simple way to change windows 7 or 8 user account password without knowing old passord. Step1: Go to Start > run > cmd. Step2: Type net user > user name > passwords. Passwords Changed! Please leave comment if yoy have any complicity!