Dynex DX-CR121 Video Gaming Accessories User Manual

If memory cards appear in My Computer but errors occur when writing or
reading, check the following:
Make sure that the memory card is fully inserted into the
Try a different memory card of the same type in the same
slot. If the different memory card works, the original
memory card should be replaced.
Some cards have a read/write security switch. Make sure
that the security switch is set to Write Enabled.
Make sure that the amount of data you attempted to store
has not exceeded the capacity of the card.
Inspect the ends of the memory cards for dirt or material
closing a hole. Clean the contacts with a lint-free cloth and
small amounts of isopropyl alcohol.
If errors persist, replace the memory card.