Change or create password in window 7

You should change the password in our window 7 at regular interval to keep your computer safe. You can change password by following methods.
• Start > Control panel >User account>Change your password( if there is no password create a password for your account).
• If password already exists type the existing password and the new password and then confirm. After that click on “change password”. Next time you open the window you have to type new password
• If no password is there,  type the new password and confirm. Then  click on “Create password”. Next time you open the window you have to type the password