The BootMed Live CD is an Ubuntu Remix for those new to Linux. It's main goal is to help the average Windows user to recover a computer that will not boot. Besides troubleshooting boot problems, there are many other things that BootMed can guide you through.
The first thing you need to know about BootMed is that it is a live cd. A live cd is basically a boot disk on a cd. You put BootMed cd in your computer, turn it on, and the computer will load an operating system from the cd. The operating system on the cd is completely independent of your hard drive, meaning that it will boot up even if Windows cannot.