Dinesh
There are a number of free utilities, and paid ones, to recover data if the problem is not physical. You could try Recuva, EASEUS Partition Recovery, or EASEUS File Recovery. If you search the forum, you will find a dozen others.
Depending on the problem, it could take five minutes to fix with a simple utility or several days of hard work with one of the paid ones. Good luck to you.
Please edit your post and remove the Email and phone number. It's a bad idea to post these in public.