When I inserted the card into my Nikon D3200--it gave me a message that stated this card cannot be used-it may be damaged?
lots and lots of links out there on this. I had this problem once and for me it was a corrupted disk. There are a number of causes. Did you format the card in another device? That could be the source of the problem. If there are other images on it, you'll need to get those off first. It could come down to running chkdsk function from your computer, but YOU'LL LOSE EVERYTHING if you don't do it properly. Formatting will also WIPE EVERYTHING, but if you don't want to buy a new card, it may come to that. There are a number of sites that explain much better than I could. Not sure what your specific solution could be.