Ok my guess is many have seen this before... it is making me crazy though, I keep getting the message! I formatted the card, I have used it regularly, but every other or third time I use the tablet the system cannot find the card! Is there a trick, a way to help this maintain a connection? I feel like the issue is related to the terminals and mating into the drive... maybe I am wrong I have very little experience using a micro sd card regularly, every device in the past involved a single installation and forget it but this tablet has the card slot exterior mounted and I have to trsfr files via the card. any help is greatly appreciated. Thank you. I use a MacBookPro and I have no windows environments available.