Click on "Start" --> In search bar, type cmd. Right-click on the command prompt
that appears in the search and select "Run as administrator".
"Command Prompt" will be opened.
Here I assume your flash drive as G:
Enter this command.
attrib -h -r -s /s /d g:\*.*
You can copy the above command --> Right-click in the Command Prompt and
Note : Replace the letter g with your external hard drive letter.
Now check for your files in External Hard Drive.