Click on "Start" -->Run --> type cmd and then run it as administrator.
Here I assume your pendrive drive letter as E:
In Cmd window , type as
E:
and then press enter.
then,
Enter this command.
attrib -s -h /s /d *.*
and then press enter.
Wait for the drive letter E:/ to appear again in the cmd window.
Note : Replace the letter E with your pen drive letter.
Now check for your files.
It will be showed in a Folder with no name or check for any newly
created folders , which will have all your lost or hidden files of your
virus affected pendrive .
Now copy all those files to any of your local disk .
Then format the pen drive.
And run a full virus scan...
Thank You...
