I went to my Best friend's wedding this past Sunday and I took a couple of nice pictures with my Nikon D3200. When I got home and inserted the SD card on my OC, using a card reader, it was different from all other times I had used it. It didn't ask me to import all pictures, which is what I prefer. So I proceeded to look for the card at My Computerand when I clicked it a message appeared saying there were files thet could not be read or something similar.
This is how the files appear http/i.imgur.com/fhOkpYN.png There are around 50 photos in those files I think. And some were of my best shots to date.