Hi there and welcome
First, to ensure the memory card has not faulted, have you tried a different memory card? Do you get an error with the another memory card?
Please let me know.
Ok, it is the most likely cause
I have marked this question to never close so If you have continued problems, or would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.