not to be particular, but please only post your question once.
now to answer your question.....it is probably corrupted beyond return. especially if its been dropped or subjected to electromagnetic crap or static. some cards just don't have much life to them. i would suggest buying a new one. One thing you can try is taking a can of air and blowing out the pin holes in the card. what did you format the card on, the computer or the camera?
