Nayomal wanted me to give a quick update on situation as he was tired and needed to go to bed. Earlier when nayomal tried to repair with JB, apparently the os partition was gone. Most of the drive was registering as free space not partitioned.
He was also having problems making BartPE disc.
I have recommended to put the hdd into PC and trying to recover data with R-Studio if data is really important. Nayomal wants to try free software first to see what it can recover it so I suggested PC Inspector File Recovery.
Please keep us updated with how it is all going nayomal.
One other thing - you could also try the software in the link below to try to repair the partition. I still recommend getting as much data off the drive first in case it doesn't work. You will also still need to put the hard drive into another pc to use it anyway. Please read the instructions first.
NTFS Partition Repair Data Recovery Software