What to do if you forget or lose Windows password? Here are some methods that can be used for Windows password recovery.

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 Windows password reset disk or using an administrator account. If the methods above couldn’t help you, I think you have to use third party Windows password recovery software.

Method 1. Reset your password if your computer is on a domain

Because your computer is on a domain, only your network administrator can reset your domain password. To reset a password for a local user account (an account that provides access to the computer, but not to the domain), follow the steps below:

  1. Open User Accounts by clicking the “Start” button Picture of the Start button, clicking “Control Panel”, clicking “User Accounts”, clicking “User Accounts”, and then clicking “Manage User Accounts”. Administrator permission required If you’re prompted for an administrator password or confirmation, type the password or provide confirmation.
  2. On the “Users” tab, under “Users for this computer”, click the user account name, and then click “Reset Password”.
  3. Type the new password, confirm the new password, and then click “OK”.

Method 2. Use Windows password reset disk to reset your password

If you forget your password and your computer is in a workgroup, you can reset your password by using a Windows password reset disk (or the password reset information stored on a USB flash drive). Want to know how to create the disk, see more in How to create a Windows password reset disk.

  1. If you enter the wrong password when you attempt to log on, Windows displays a message that the password is incorrect. Click “OK” to close the message.
  2. Click “Reset password”, and then insert your password reset disk or USB flash drive.
  3. Follow the steps in the Password Reset wizard to create a new password.
  4. Log on with the new password. If you forget your password again, you can use the same password reset disk. You don’t need to make a new one.

Method 3. Use an administrator account to reset your password

If your computer is in a workgroup and you don’t have a Windows password reset disk, you’ll need to get someone with an administrator account on the computer to reset the password for you.

Warning: If you use an administrator account to reset the password, you will permanently lose access to any email messages or encrypted files that are on that account.

Note: These steps cannot be completed on Windows Vista Starter, Windows Vista Home Basic, and Windows Vista Home Premium.

  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 provide confirmation.
  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.

Method 4. Use third party Windows password recovery software to recover your password

If you forget the administrator password and don’t have a Windows password reset disk, you can use Windows password recovery software to recover your password. We high recommend Windows Login Recovery.

  1. Enter a computer which can download from Internet and has a CD/DVD writer.
  2. Download the software and install the software in your other computer.
  3. Run the software and burn the .iso file to a blank CD/DVD (or a USB flash drive or a floppy disk).
  4. Insert the CD/DVD (USB flash drive/floppy disk) into the locked computer, reboot your computer (it’s necessary for you to change your computer’s BIOS setting to make it boot from CD-ROM) and recover your password.

Ok, here are my found, hope this can help you. :)

Source:
www.microsoft.com
www.windowsloginrecovery.com