I got a 3 TB Western Digital My Book Essential external drive. It worked fine for 4 years without any issues and it was my main storage device. Now it was not powering up and I did tried with a different adapter but still the same thing. Clueless about anything, I thought it might work if I open the case and set it as the internal drive. But the drive showed as unallocated space in the disk manager. Also it asked me to choose between MBR or GUID. I had to choose anyone of them so I chose GUID. I thought then it might show up and I will get the entire data like it was before. But still the same now. Please let me know is there anyway to get everything. I got over 2.3 TB of Data in it, mostly videos as I work as a video editor. Some of the data is very important for me. Did those free data recovery software work? Is there anyway that the drive will work in its original case? Please help!!!