Here I list 4 solutions for this problem.

1. Use password hint on password locked Windows 7 computer
If you have set the password hint when you set account password, it may help to remember something about your forgotten computer password!

2. Rest Windows 7 password with Windows password reset disk

If you have a created Windows password reset, you can use for the disk to help us unlock password efficiently. (You may refer to How to create Windows 7 password reset disk)

a, insert the password reset disk into your locked computer
b. Click OK and close the message box on the password incorrect prompt window.
c. Click “Reset Windows Password” and insert the password reset disk.
d. Do as the “Password Reset Wizard” to create a new password.

3. Change Windows 7 password with Windows Installation Disc

a. Insert the Windows 7 Setup DVD into the locked computer
b. Set the computer to boot from DVD drive.
c. When it asks to repair our current Windows installation, choose “Accept” it and press “R” to run the repair. Then computer will begin to repair our Windows and copy files to hard drive.
d. Setup will reboot system. Please don’t press any key when there is “Press any key to continue…”
e. Now computer will do other tasks and there will be a progress bar displayed. Please notice carefully the details shown at the bottom of screen.
f. Once “Installing Devices” comes up, press keys: Shift+F10. Input: nusrmgr.cpl and press Enter key at the Command Prompt window.
g. The same “User Accounts” window will display as it is in Control Panel. Choose “Administrator account” and select any account listed to change or remove your computer password.

Be care if you are a newbie to computer when you use this method for Windows 7 password recovery, as your data my lost by accident.

4, Remove password using Windows password reset program

A Windows password reset program is designed to create a password reset disk and remove the Windows password on any Windows computers. The theory of such program is to burn an .iso image file from Windows password reset software into a bootable CD/DVD/USB disk.

Take Windows Password Reset for example:
a. Download and install Windows Password Reset program on any accessible computer

b. Run the program to create a password reset disk using a CD/DVD or USB flash drive

c, Insert the password reset disk to the locked computer, and set the BIOS to boot CD/DVD or flash drive
d. Reset the lost Windows password

The above ways on forgotten computer password reset are the collections of best bet for us to unlock lost Windows 7 password! Compare to the first 3 method, the 4th method is absolutely the most efficient method for Windows 7 password recovery.