Virus that hides my folders

There is a virus on my comp which doesnt allow to view my hidden files and if we change the options in view also it goes back to previous settings

How to discover Folder/File in the pendrive.... I'll tell you how.... Just follow the step below:

1. click start>>run>>type in "cmd"
2. type the location of your flash drive.. e.g. "d:", "e:", "f:", etc..
3. type "dir /ah"
*you will now see the files/folders with hidden attributes
4. type "attrib [name of file/folder] -r -a -s -h"
*if you're going to unhide files, you should type the whole name plus the extension (format).. example "attrib party.jpg -r -a -s -h"
**if you have folders with 6 characters and above, type the first 6 characters then "~1".. example for folder named "birthday"
"attrib birthd~1 -r -a -s -h"
5. you should repeatedly type dir /ah after unhiding some files/folders so you'll know if they're now working or not..
6. now check you flash drive.. it should be there..