Now this has been happening since the last time i restarted my computer. It was working fine for almost 2 years now and all of a sudden this. Have i possibly lost 700gb+ of data? or can anybody help me to get it working properly again. I've tried uninstalling and reinstalling my USB 3.0 Drivers and Reinstalled my OS too.
these are some screenshots to get you started. Thanks for your help.
http://imageshack.com/a/img633/6711/5LYcGj.png
http://imageshack.com/a/img909/6998/peOD58.png
http://imageshack.com/a/img908/3927/uTcbzv.png
http://imageshack.com/a/img673/7158/5wysYu.png
these are some screenshots to get you started. Thanks for your help.

http://imageshack.com/a/img633/6711/5LYcGj.png
http://imageshack.com/a/img909/6998/peOD58.png
http://imageshack.com/a/img908/3927/uTcbzv.png
http://imageshack.com/a/img673/7158/5wysYu.png