April 19, 2012

How to reset Windows admin password without knowing the old password

Here is a simple tutorial on resetting the admin account password of any Windows Operating System. All you will require for this is one Ubuntu live CD.

  • Insert Ubuntu Live CD and boot from it.
  • Open terminal and install chntpw in Ubuntu. To do so use the following commands.

                    sudo apt-get update
                    sudo apt-get install chntpw

  • Now mount your Windows volume. In my case it was dev/sda1. Replace it with yours.

                   sudo mkdir /media/WINDOWS
                   sudo mount /dev/sda1 /media/WINDOWS

  • Now navigate to the Windows configuration folder.

                   cd /media/WINDOWS/WINDOWS/system32/config/

  • To reset the administrator password enter

                    sudo chntpw SAM

  • After completing this command you will see 5 different choices. Select the 1st one and press Enter and done.


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