Device detected on Mac that does not exist

One of my users is running the latest version of Mac Parallels and ran into big problem when shutting down parallels. Avast popped up a message stating that there is a floppy in the drive. However, this computer does not have a floppy drive at all. Any thoughts ???

Not only floppies are detected but also USB drivers and CD… Like you can see into ‘Common’ tab of the Program settings.