|When it was last used (successfully) was it removed correctly; as in ejected correctly?|
Also you now have two posts on the same topic..., suggest you stick with one - logically this one now you have a response here. Either you delete the second one, or at least its content and leave a note referring to this one. Or trust a moderator to delete the second one for you?
How are you connecting to/accessing these cards; by an adapter or via a built-in slot in your computer (what make/model is the computer)?