My young brother going to cyber cafe and attach his pen drives to the computer. Unfortunately all his data in the pen drive corrupted , all folder become short cut. If you are facing the same problem, do not panic because your entire file still exists but only hidden by virus.
Follow instructions below :
Start > cmd > and type your pendrive path , I assume your pendrive is G.
Enter this command : attrib -h -r -s /s /d g:\*.*
double check your pen drive and backup all your data before reformat your pen drive.
Another alternative is open your pendrive in MAC or Linux operating system and delete unknown file or folder.