Bad Disks

• Floppy disks have been obsolete for some time, so it's possible your drive issues are due to a disk that has gone bad. Also, check your disk to see if the Write Protect switch is turned on. This switch prevents the disk from being overwritten.
  
  

BIOS

• For your computer to recognize your floppy drive, it needs to be set up properly in your computer's basic input/output system (BIOS). You can enter the BIOS right before the computer boots up by pressing the appropriate key indicated on the loading screen. Make sure your floppy drive is present in your BIOS menus.
  
  

Connection Errors

• Your floppy drive may have become accidentally disconnected from your other computer components. Open up your computer to see if the power cable has come loose. It is also possible your floppy drive is not conencted to your motherboard.