It appears that the subject card has failed at some point. I took a large number of photos with my 7D Mk 2 yesterday. I reviewed several during the shoot. I saw no problems. It’s not a new card, and it has worked fine in the past.
However, when I attrmpted to upload the images to my PC, it never brings up Autoplay, and when I attempt to view the images manually, nothing really happens.
Putting the card back into the camera returns an error message.
I tried the free version of Recuva, but it basically does nothing either.
Is there any recourse to recover the images from the card?