Hi Susafuss,
_ Dear member of SanDisk Community, welcome. _
Please, try the card in other laptops, direct to it’s port-card, with a good adapter, non generic (Not a card reader).
If you have a PC, and have to use a “card reader”, use only of brand recognized and high quality.
Luck, and then you tell us , what happened, please.
Regards, Alfred. (Google translated)
