My floppy drive quit working months ago and since I never use it, I really didn't care. Now, however I need it. The drive (a shows up in "my computer", but when I click on it to view the contents of the inserted floppy I get the message "please insert a disk into drive a:". I know the disk that is inserted works. I bought a new floppy drive today and installed it with a new cable and I still have the same problem. How can I troubleshoot this problem?