3.This is another way to recover lost admin password of your Windows.You can change Windows Password with another admin account.Log on to the administrator account that you will use to reset the forgotten password,Open Local Users and Groups by clicking the Start button Picture of the Start button, typing lusrmgr.msc into the Search box, and then pressing ENTER. Administrator permission required If you are prompted for an administrator password or confirmation, type the password or provide confirmation.Then Double-click Local Users and Groups, and then click Users.Right-click the account that you need to reset the password for, and then click Set Password.Type and confirm the new password.