I just put together a computer. Everything works except the floppy drive and the Iomega zip drive. They both are shown in my computer but when I put a disk in either it keeps asking for a disk to be put in. The CD drives both work. I have tried 2 different floppy drives, both are new ones. What could I have done wrong?? I have also tried 2 different cables. The cables are in the correct position with the ribbon end on the floppy. The zip drive is a slave to the HD.