how to get my deleted data back
If your just after recovering some of you personal files, I’d use some sort of undelete program: I’ve used: Download Recuva | Recover deleted files, free! recuva in the past and had good results.
If it’s a forensic recovery your after, there is a way to do this with autopsy just google how to do it and this was my first result: How to Use Autopsy to Recover Deleted Files