New refurbished Nikon S3100 with new SD card shows error code ("this card cannot be used".) It is the correct card, also. Any ideas?

1 Answer 1


There is a tab on the card that locks it from being written. Make sure that's not in the wrong position. Try moving it out of the lock position and see if it then works.

Otherwise try formatting it in camera, and if it won't format, try formatting the card on your computer using a card reader.

  • 1
    The step following that would be to try a different card (nobody's QA is absolutely perfect, and there are "black run" cards with convincing packaging that have hit the market). If that doesn't work, it's very likely a ribbon cable in the camera body not seated properly (a quick fix for a competent tech).
    – user2719
    Jan 6, 2013 at 23:17
  • I'll add that if/when you format it using your computer, make sure you use one of the FAT file systems.
    – daalbert
    Feb 6, 2013 at 0:07

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.