Problem opening a drive with folder iconed?

This problem is caused by a worm called “autorun.inf” which is executed whenever you try to open your drive.

At higher levels, it infects all the drive shell and restricts access to each of your drives

To remove it, 

FOR INFECTED COMPUTER SYSTEM
Format the system (just system drive) and scan each of the drives with a good antivirus without opening them.

 You need to get any of the following Antiviruses:

Norton Antivirus (Updated)

Quick heal Antivirus

Kaspersky

MacAfee Total Security

Visit: http://ashishsoftplanet.blogspot.com for more which are capable or removing this virus.

FOR REMOVABLE DRIVES 
In some cases, you can easily remove this virus by command prompt. Don’t open the drive. Otherwise it will be installed in your PC!

Open run, type cmd

Execute the following:

    Attrib <Drive letter>:\autorun.inf –r –h –s      -> Press Enter

     Del <Drive letter>:\autorun.inf                  -> Press Enter

You'll have it removed only when you've not opened the infecetd drive. Once infeceted, you'll have to restore or system or, go for a format.