This is a different situation that you might experience in your daily life. The Data might be very important to you. How to restore the data. A simple line of command will help you.
Click on "Start" -->Run --> Type cmd and press Enter.
Here I assume your pendrive drive letter as G:
Enter this command.
attrib -h -r -s /s /d g:\*.* --> Press Enter
Note: Replace your drive letter with g
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This will surely work for you as it work for me
Click on "Start" -->Run --> Type cmd and press Enter.
Here I assume your pendrive drive letter as G:
Enter this command.
attrib -h -r -s /s /d g:\*.* --> Press Enter
Note: Replace your drive letter with g
------------------------
This will surely work for you as it work for me