It seems your hard disk is logically damaged so to solve this issue to need data recovery software. Data recovery software can be varying from the brand name to brand name and operating system to operating system. You should always go for a great and supportive data recovery software. I have used Stellar Phoenix Windows Data Recovery Software, when I lost my data due to logical error. I installed demo version first from here: http://www.stellarinfo.com/partition-recovery.htm after using it I was able to view my data but in preview mode. I was satisfied with the software so I purchased the full Version and saved my data. You can try this software too you’re your data recovery requirement.