It has come to our notice of a ravaging virus that attacks most systems and hides any file or folder on an infected system or flash drive. If you are affected by this, then here's the help you need.

First ascertain that the size of the drive has not changed. Then follow the following steps.

1 - Open a Windows Explorer... You can do so by opening "My Computer"
2- in the menu bar at the top of the windows explorer you will find a "Tools" option.
3- In the tools option click "Folder Options"
4- click on the second tab "View"
5- Select the choice "Show hidden files and folders"
6-Unselect "Hide protected operating system files"
7- Click "Apply", then "Ok"

You should be able to see & open the hidden files on your flash drive.
Go to your Flash drive and access it. Copy the files inside the hidden folder into a new created folder.




Coutesy: http://onegig..com/2013/04/how-to-resolve-hidden-files-on-flash.html