How can I recover a picture (taken last year) that I erased from my SD card and PC (recently crashed, nothing can be done)? I tried Recuva and it didn’t work.
I hear there's a possibility of recovering you lost data but it's not guaranteed. Try using the softwares given above I would rather recommend you to learn having alternative backups like http://www.safecopybackup.com. Try out there 3GB free trial. It's good, I personally have experienced their services.
If the picture was deleted recently then yoou might still recover using file recovery apps.
On the other hand if the picture was deleted a while ago I am afraid your chances of recovering it are very small.
How long ago was it deleted? If the picture was taken and deleted a year ago then there's probably nothing you can do.
Here is a link to some free tools that you might be able to use: