The article below will guide you through using Password Reset Disk to reset Windows password. To reset your Windows login password, the first step is to log on to Windows with the account that you forgot your password. After you have entered the wrong password, Windows will display an error message screen.
=> Windows XP
=> Windows 7
=> Windows 8, 8.1
Step 1 : Click on the option Reset Password or Use your password reset disk, the screen will appear Password Reset wizard window.
Step 2 : Here click on Next to start the reset process.
Step 3 : On the next window, select the correct USB Password Reset Disk and then click Next.
Step 4 : Next, create a new password to log in to your computer in the Type a new password box and confirm the new password again in the Type the password again to confirm box.
Make a suggestion in the Type a new password hint box to help you remember your password.
After creating the password, click Next.
Step 5 : Next, click Finish to close the Password Reset Wizard.
Finally, go back to the login screen and enter the password you just created to log on to Windows.
If interested you can refer to the link below for more information :