1. Start your computer and get to the dell Windows 7 login screen.
2. Type a wrong password, and then Reset password link will appear on the windows 7 login screen. (You should have access to enter your PC; otherwise, this method would not work for windows 7 password reset.)
3. Click Reset password to enter to Password Reset Wizard screen, and then click next.
4. Select the right disk if you have more than one password reset disk, click next.
5. Type in a new Win7 password and password hint, click next.
6. Click Finish when you've successfully unlock Windows 7 password.

Besides, you can use dell Windows 7 password recovery tools—Windows Login Recovery, which is efficient Windows 7 password recovery software designed to recover Windows login passwords for any version of Windows, including Windows 7, 7, XP, 2003, 2000, NT, 2008. It is not necessary for you to reinstall the system when you forgot or lost your Windows login password. But a blank CD/DVD or USB flash drive and an available computer with optical drive is required before starting to perform dell password recovery Windows 7 as below:

1. Download Windows Login Recovery and install it in any available computer. (You forgot windows 7 password of your dell PC, find another computer you have access to.)
2. Run the program and insert a blank CD/DVD or USB flash drive into computer. You will see a default path of an ISO image file after running the application.
3. Select CD/DVD or USB drive to burn the ISO image file and click Burn.
4. After burning, insert the CD/DVD or USB drive to your locked computer.
5. Set the locked computer to boot from CD/DVD or USB drive. After setting BIOS to boot from CD/DVD or USB drive, the computer will restart automatically. And then you can reset dell Windows password 7 under DOS.
6. Choose the installation path of Windows, and enter the ID of the path.
7. All the user names will be displayed for you, and you can select one to remove its password by entering the ID of User Name. And then enter y to confirm your operation.
8. After removing the selected password, you can enter y to continue to reset other passwords, or enter n to finish. (On the way for windows 7 password removal)
9. After entering n to finish, eject the CD/DVD or USB drive and press any key to restart the computer. Now, you can log on your PC without password.