5 1/4" drive in Explorer when there isn't one in the PC

A while back I had Windows Me. I wanted a new hard drive, but I needed to upgrade my BIOS. I did that, the new hard drive was fine, but Windows Me reported a floppy A and floppy B drives. Previously, this was the case as one of the floppy drives was a zip drive, but I removed the zip drive to have somewhere on the IDE cable for the new HD

Anyway, I decided to install 2000 onto the new HD. No problems installing it at all. However, in Windows Explorer, it now shows floppy A (3 1/2" drive), which is correct and a floppy B (5 1/4" drive) which doesn't exist at all. (Floppy A is in fact an LS-120 super drive, so it sits on the IDE cable instead of the floppy controller cable)

There is a tool (can't remember exactly where as I'm on an NT box just now), which reports the disk drives connected to the motherboard. It correctly reports the two hard drives, the CD-ROM and the LS-120 super floppy drive. It also reports a drive connected to the floppy controller and that the device is functioning correctly. This is not the case, there is no floppy connected to the floppy controller to be functioning correctly

My question (sorry for all the ramble) is, can I delete the appearance of the 5 1/4" floppy from windows explorer, or is it a motherboard issue?