How to Recover Hidden Files?

1. Insert your Card or External USB
2. Go to Start -> Run-> Type CMD here And enter
3. Find the drive Path for the connected USB drive.                                                                 
4. For Example,  In command prompt, type D: and Hit enter. 
5. Command Prompt will show D:/    
6. Then type command and swithches ->  attrib -s -h /s /d *.*

Make sure that you put space between each elements in the code. and hit enter and wait for few seconds.