Recoverfab is specialized to recover files from all types of flash memory: Memory cards/USB-Sticks (SD, mini SD, micro SD, MMC, CF, memory stick pro duo, xD) that have been lost due to system or battery failure, format or deletion and corruption caused by hardware or software malfunction. All recovered data/images/photos/pictures written/burned on SD-memory card or CD/DVD as required at no additional charge, shipment world-wide at no additional charge!
Recoverfab operates a no-data, no-fee policy and provides FREE data recovery analysis for any card storage media presented for data recovery. To use our service, print out a Service Request Form. Send the form and the memory card to us in a padded or stiff cardboard envelope (don't use a regular business or letter envelope, the cards can fall out). The address of our Data/Image Recovery Lab is listed on the form.

You found your card been disappeared and no longer been detected or wants to be formatted suddenly, even though seconds ago the card is still working properly.
The PC treats the card as is doesn’t been inserted or existed are including the memory card does show up in File Explorer folder tree but reported as having no free space, or the data on the memory card appears to be corrupted and causing the PC to hang and not responding when programs, tries to access, write or read from the card. Other peculiar symptom is no data and files are contained within directories. What can you do?

Reasons for memory card errors explanation
Why are memory cards damaged? explanation
Why does your card suddenly ask to be formatted? explanation
So then, which memory cards are the most reliable? explanation

Interesting Images about NAND-flash memory cards

Typical printed circuit board assembly of SD memory cards

There is a new layout for SD memory cards, the chip is not assembled on a board anymore. Chips from mini and micro SD cards are embedded in a normal SD card cover.