PEN DRIVE DISPLAYING ONLY SHORTCUTS

The virus modify your files attribute. To restore the setting follow this instructions
  1. Click on 'Start'
  2. Select 'Run' or Press 'Windows Logo' on keyboard together with the button 'R'
  3. Type 'cmd' and click on 'OK.'
  4. Type this command : attrib -h -r -s /s /d G:\*.* (Here I assume your pen drive letter as G:)
  5. Press 'Enter'