when i removed my memory card frm my camera and connected it to my pc at the first time it showed all the pics and videos in it .the next day morning when i connected it back to my pc it says the card has to be formatted .again i placed it in my camera it also gave me the same ans to format the memory card . i need the photos its urgent for me a project work frm DELHI .can any one help me out .the card is not locked i have checked it .