Change Window Admin Password Without Knowing The Old Password

1-  right click on computer and go to manage

2- go to left hand side local user and groups: and do to user... you can see the all user..

3- select any one user and right click and select the proceed password...

4- click on proceed now enter the new password and enter the confirm password which you want....
and finally click OK..

5- your password is changed without knowing old password

thank you for reading this.