How are you connecting the memory card to the computer? Directly to the camera? USB memory card reader? It sounds like you have a hardware failure. It could be: 1. Bad Card Reader 2. Bad USB cable 3. Bad USB port on the computer 4. Bad USB port on camera Try connecting to a different USB port. If that doesn't work, then you need to try different parts, i.e. USB cable or card reader. If you are connecting direct to the camera, try using an external card reader connected through a USB cable. Connect to a USB 3 port (Blue) for the fastest results. Once you try these things, close and restart Lightroom and start the Import process fresh.
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