Method 1: Use windows 7 password reset disk
If you have a windows 7 password reset disk around you, it is time for you to take it out to reset windows 7 password.
1. Start computer and log on Windows with the target Windows account.
2. Enter a wrong password in the welcome screen password box, press Enter.
3. When the error message comes up, click OK.
4. Click Reset password on the following screen.
5. When the welcome screen of password reset wizard appears, click Next.
6. Follow the forgotten password reset wizard to reset password when forgot Windows 7 password.

Method 2: Try Opgcrack
You can use free Windows password reset software named Ophcrack to show how to recover windows 7 password. This program comes with huge ISO files which will take you hours to finish the downloading and installing of it.
1. Visit the site of Ophcrack, download the free ISO image, and then burn it to a CD.
2. Reboot your locked computer from the CD.
3. Ophcrack program will start to locate the Windows user accounts and get the lost Windows password recovery.

Method 3: Use Windows Login Recovery
How to remove windows 7 password is exactly the problem Windows Login Recovery can solve. Following is the simple steps to reset your lost Windows 7 password with this computer software:
1. Download the software and install it on an accessible computer but not your locked one.
2. Put a CD/DVD or USB drive into the computer to burn a bootable password reset disk.
3. Insert the disk into the locked computer to reset windows 7 password.