A few suggestions - if you're lucky the internal drive may just have dirty heads - try a disk cleaning kit (disk with absorbant material instead of a magnetic disk in it and some cleaning alcohol or methylated spirits). Failing that you may have a damaged head - usually happens when a bent or otherwise damaged floppy is inserted and gets stuck. If you try to yank it out you can catch the drive head on the metal shutter and pull it off! If that happens - bye bye drive. If you are very lucky your external drive may be the same drive mechanism type that your internal drive was - usually Chinon or Teac. If so you can swop the drive casings so that the eject button from the internal drive fits. How to do that needs a longer explanation. If you need it reply to this post. Good luck.
