Here gives the two easy and common ways for us to reset Windows administrator password
.Just follow and try.
If you forgot Windows administrator password
and didn'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.
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.
Now you also can reset your Windows password as follow ways:
First way.To use an administrator account to reset your password
If you use an administrator account to reset the password, you will
permanently lose access to any e-mail messages or encrypted files that
are on that account.
1.Log on to the administrator account that you will use to reset the forgotten password.
2.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
3.Double-click Local Users and Groups, and then click Users.
4.Right-click the account that you need to reset the password for, and then click Set Password.
5.Type and confirm the new password.
Second way.To use your password reset disk to reset Windows administrator 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.
So,if you ever or now have noticed the security for your computer,do make a password reset disk to prevent.