After a while, the System Recovery Options window will show up which prompts you to select the keyboard input method that you prefer, and subsequently asks you to log on as a local administrator account before running the Startup Repair or System Restore tool. But you’ll be stuck at the logon screen if you couldn’t remember the administrator password.

Just take it easy! Simply boot your computer from PCUnlocker Live CD and it enables you to remove forgotten Startup Repair password quickly. The PCUnlocker utility exists as a bootable ISO image, which needs to be burned to a blank CD or placed on a bootable USB drive. It could be used to reset lost administrator password on Windows 8, 7, Vista and XP.

Once you’ve created a PCUnlocker Live CD, put it in the CD drive of the Windows 7 computer that you’re trying to reset the password for. Power on the computer and make the CD-ROM to boot first in the BIOS. If all goes well, you should be booting into a mini Windows Preinstallation Environment (PE). PCUnlocker is launched automatically after the system has booted, and it searches your Windows installation and displays a list of local accounts stored in your SAM database.

Choose your administrator account and click on “Reset Password” button. The program will remove your forgotten password and tweak the account’s properties so you can later login without a password. Take out the Live CD and reboot your computer. Repeatedly press F8 key to access the Advanced Boot Options screen again, and you can then log on with a blank password and continue to perform a Startup Repair or System Restore. Done!