Creating the Bootable Live Disk and Installing Registry Recovery Software
When your download has finished, use your operating system's disk authoring application to burn the ISO image to a disk. If you are using Microsoft Windows and do not have a third-party disk burning application, then you will not have support for working with ISO images. Luckily, there is a "power toy" suggested by Microsoft for working with disk images called ISO Recorder. You can burn ISO images to CD-Rs if they will fit, or DVD-Rs for the larger images.
Restart the computer with a corrupted registry, with the Linux boot disk in the drive, and press the motherboard manufacturer's boot menu key, then select your disk drive from the list. The boot menu key will often be "F2", "F10", or "Delete", but varies between manufacturer and firmware version. Some manufacturer's may not even include a boot menu. In such a case, press the corresponding key to enter the BIOS, then edit the boot order to place your disk drive ahead of all other devices. All of these keys are displayed at the bottom of your screen during the Power-On Self-Test (POST) portion of your boot sequence, the part that happens just before the system beep.
Once you have booted into the Linux boot disk, launch the system's software repositories. On Linux Mint or Ubuntu you will need to find the Synaptic Package Manager while under other distributions you may need YaST2 or another option. Each distribution varies based on the developer's preferences. Use the package manager to search for and install the "chntpw" application, a registry editing tool for Linux. Since this is a Live distribution, loaded into RAM, this application will disappear with each reboot of the Live disk. You will need to install chntpw each time you want to use the application.