If you've forgotten your Windows password and you're on a domain, you should contact your system administrator to reset your password. If you're not on a domain, you can reset your password by using a password reset disk or by using an administrator account.
If you forget the administrator password and don't have a password reset disk or another administrator account, you won't be able to reset the password. If there are no other user accounts on the computer, you won't be able to log on to Windows and will need to re-install Windows.
To use your password reset disk to reset your password
You will not be able to follow these steps if you have locked your computer.
1. If you have typed the wrong password, you'll receive a message that says your user name or password is incorrect. When this message appears, click OK.
2. Click Reset password, and then follow the instructions.