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My advise would be to use a card reader, this allows you to copy the images direct to your computer hard drive then you can use your choice photo editing software to apply any changes.
Transferring images from the camera using a USB lead can cause movement of the camera USB socket, if this socket fails generally it comes as part of the main printed circuit board.
If you purchase a card reader purchase a multi purpose card reader, this will allow you to use many different cards. Make sure the card reader has the capability to read large cards.
Try removing the camera software and reinstalling.