Hello! I'm having a problem where several of my devices randomly give 'Check SD Card' upon startup. I do not think this is a problem with the SD card- I can put the card into one device and it will boot properly, but when I put it into the 2nd it will give the error. All 4 of my devices will do this sometimes. I have tried resetting, reformatting the SD cards, different SD cards. Time seems to help - I left them alone for a week, and now 3/4 of them accept the SD card, but 1 still won't. But, there have been many times where they are working when I set them up, but when I turn them off then on again to change the device mode, they throw the error.
Do you have any ideas? I have found old threads on similar problems, but nothing I've found there worked.
Thanks,
Leina