Hello,
I uploaded my pictures from my camera to my laptop and when I uploaded them to Facebook, pictures deleted off my laptop. I cannot find them anywhere, and I was only able to upload 4 pictures.
recuva always works for me. try on your memory card as well. make sure you do not install it or download it onto the drive you are trying to recover. i would download it to a stick drive, install it onto a folder on that stick drive. then run. if you install it onto the drive you are recovering you almost certainly will write over the files you want to save.