However, I never liked or used full hard drive encryption (especially bitlocker) because it not only slows down drive read and write access times, but the exact thing your asking help for can render a drive useless, and ultimately most of these bitlocked drives gets reformatted to re-use because people give up and take the easier way out. Yet a user on Tom's Hardware suggested that if you use
UNetBootIn to create a USB live Linux utility boot drive and open up the boot partition, access and copy the files to another drive... supposedly Linux can ignore anything that has to do with Windows, like the bitlocked partition.