Go try a free drive recovery utility
, which has helped me recover many of my files from the inaccessible drive. It is supper easy and efficient.Note
1. Do not store any new file on this drive in case of the original data overwritten by new data, which can make your data gone permanently.
2. Do not save the recovered files on the same drive in case of recovery failure.
3. Do not forget to format this drive to see whether it could work normally as before.
4. Do not forget to back up your important files as possible as you can in the future.