Recuva (for Windows)
Recuva (version 1.51.1063) is a 4.02MB free download, and works
with PCs running Windows 2000 or above. To recover your files
from your SD card, load the card on the PC via a card reader,
select the corresponding drive in Recuva’s drop down menu. Run
a scan via the Scan button.
The scan will return a list of files on the card, including deleted or
corrupted files, and give you the option the recover the files, using
the Recover button.