I've used the same SD card on my DSLR for years with no problem. Today when I went to xfer my photos to my laptop via the SD card reader (like I have for years), as soon as I insert the card it asks me to format. Lightroom will not read any photos on the card, however when I put it back in the camera it shows the photos fine in preview. Tried formatting the card in my camera (sadly deleting all my photos) and it still will not read on my laptop. It recognizes when I insert the card but keeps asking to format. Tried other SD cards and the same thing happens. Can anyone shed any light on this problem? Did the card reader in my laptop die?