Photo recovery software

[Kyle]

There is something wrong with my photo camera card. I see photos on camera screen but can't copy them to computer. Card looks empty when it's full, I'm sure it's some kind of virus anyway, I'm looking for software which helps you recover deleted or damaged files. Once I had it and it was working fine then I re-installed windows and lost the program. I don't remember name of it. Now I searched all over internet and couldn't find the one which is FREE. because there are tons of trial and demo versions. Maybe anyone has one in the computer and can tell me a name? Thanks.