Try this
Insert the corrupted memory card into a card reader, and then connect the card reader to your system.
Go to “My Computer” and search for your SD card under “Devices with Removable Storage” and note the drive letter assigned.
Now open RUN on your computer (Click on the “start” icon and enter “search for program” then type in RUN).
Type in “CMD” in the provided text box to bring up a command prompt, from where you can fix your corrupt memory card
Type “chkdsk” followed by the drive letter corresponding to the SD card then by a colon and /r. (Example: Chkdsk e: /r)
The ‘chkdsk’ command checks a disk for structure corruption. The e: tells it what drive letter to use and the /r tells it to repair the issues it finds.
After you press “enter”, the Chkdsk will check for possible errors and try to fix the corrupt SD card.
Follow the subsequent message prompts.
Chkdsk will report back what it has done and then go to my computer and check out your drive to verify if the files are recovered or not.
How to Recover Lost Data from Windows 10
Method 3:
Insert the corrupted memory card into a card reader, and then connect the card reader to your system.
Right-click on the drive and select “Properties”.
If you can view the used space on the card and if it shows all or almost all free space, then either all the files have been deleted, or the directory has been erased.
In this case, you can use a Sandisk inbuilt solution that might restore all the deleted files easily.