When you remove the card from the laptop, are you remembering to use the "safely remove hardware" function? If not, that could be the problem. You may have to format the card in the camera to get it working again. This will erase it so download any pics you want to save first.
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When you remove the card from the laptop, are you remembering to use the "safely remove hardware" function? If not, that could be the problem. You may have to format the card in the camera to get it working again. This will erase it so download any pics you want to save first.