I have a Nikon E5600 digital camera. My problem is not with the camera, but rather the mempry card, I think. I took the memory card out of the camera to upload some pics onto my computer, when I went to put the memory card back into the camera to take more pics it said that the memory card could not be used. I don't know what that means. It's never said that before. I know the card is not full. And now I cannot even look at the pics on the computer from the card. Dose anybody know what could be the problem and why it happened? Also, if I can't look at the pics on the computer from the card anymore, does that mean that they are just lost?

When you last plugged the card into your PC, when you removed it, did you use safe-removal procedures?

For ALL external devices you must use the

If you didn't (just pulled the card out of your PC) you may have just blown it.