Select the Start menu (the Windows icon, typically in the lower left of the screen).
Type ‘cmd’ in the search box.
If you see “Run as administrator” choose that (otherwise, right-click on the Command Prompt app search result and select “Run as administrator” from the drop-down menu that displays).
If prompted, enter the administrator password for your system.
You should see a command line prompt. Enter “chkdsk d: /r” to repair errors and recover files on your SD card. Replace d: with whatever drive letter your SD card displayed as earlier (e.g., “chkdsk f: /r” for the f: drive).
The app will attempt to recover files and folders on your drive. This process can take some time, so be sure to let chkdsk finish before you attempt any other activity with your SD card.
