MajesticMomentsPhoto wrote in post #18761316
update: I tried Image rescue, nothing found. the card cannot be formatted, and it will not allow anything to be written to it...
The Lexar 1066x 64GB card is UDMA7 as I recall. When these first came out there were lots of issues and the final resolution was that the card reader had to be UDMA7 compatible. Lexar themselves, with their very high end reader, had to issue a firmware update to allow the reader to work reliably. You can read about the potential reader issue and incompatibility with UDMA7 at https://www.photo.net …xar-cards-failure.502098/. Should you be using the Lexar reader, the firmware updates are at http://www.lexar.com/support/downloads/. The update that corrected the UDMA7 issue with the 3.0 dual slot reader is dated July 2012.
Check the camera firmware as well; for instance, with a 5DII firmware 2.1.2 incorporates a change that "Optimizes the camera’s performance when using certain UDMA 7-compatible CF cards released in February 2012 or later."
Checking around, some people report success in getting images off the card by leaving the card in the reader, then restarting their PC. If that works, don't touch the reader, use the opportunity to get the images off the card.
Also, before going much further, get yourself a bright flashlight and look into the card socket on the reader (or readers) and the camera. It has been awhile since much discussion of a bent pin in the socket but they have been know to happen and damage a card.