autorun.inf virus hid my files in my pen drive

That's because when I check the drive it has at least 3/4 bar full but when I open my usb only about 2 folders and 4 files show up, in other words, it hid my files. This happened after my usb was plugged into a printing company's computer. I tried other recommemded fixes but it says access denied. and now it seems like my laptop files are shrinking when I checked its drive c and d. help!

http://www.bleepingcomputer.com/download/unhide/

 And, have you performed a virus scan of your computer to insure that it is not infected?

Try Hitman Pro Trial Version: http://www.surfright.nl/en/hitmanpro This program may be run from a flash drive.

Try TDSS Killer: http://www.bleepingcomputer.com/virus-removal/remove-tdss-tdl3-alureon-rootkit-using-tdsskiller TDSS Killer may be run from a flash drive.

You can start here:  https://consumersecuritysupport.microsoft.com/  (which will lead to the paid support options of http://www.answerdesk.com if you are in the US)

In other regions not served by the link above, go here:   http://Support.microsoft.com/security and go to the “assisted support” or contact us menu.

This web site - http://www.bleepingcomputer.com -  contains details for many of the common infections, often immediately after they began to appear in the wild, and instructions are provided for how to remove the infections using their malware removal guides. They also have forums where you can seek help from people who specialize in malware removal.

This may also be helpful - How to get rid of malware:

http://answers.microsoft.com/en-us/windows/forum/windows\_vista-security/how-to-get-rid-of-malware/ba80504b-61f1-4d71-960f-b561798b7b42

-steve

files in my pen drive or usb storage device are hidden. how do I restore them.

How do you know it was a virus and not a corrupt drive? The autorun virus typically changes all files to shortcuts. If it is the autorun/pendrive virus -

See if the following helps: http://en.kioskea.net/faq/8734-files-on-flash-drive-changed-to-shortcuts

http://www.techjunoon.com/files-on-externalflash-drive-changed-to-shortcuts-virus/

http://www.symantec.com/connect/forums/usb-flash-drive-shortcut-virus-0

-steve