You have to get the helps of some data recovery software unless you
won't be able to recover your lost data.
If you find any way of recovering lost data with the software then
please let us know.
When I have faced the data loss situation I used Stellar Phoenix
Windows Data recovery software, it is a file and partition recovery
utility which recovers lost data from formatted hard drive or data
lost occur due to software malfunction, viruses or file/directory
deletion or even sabotage.
For more information visit: http://www.stellarinfo.com/partition-recovery.htm