That sounds very much like the hard drive's gone and died on you...
If you have a 20GB H10 you might try finding an external 1.8" ZIF-connector hard drive enclosure for it and seeing if that might bring the drive up long enough to extract the data from it, but I wouldn't count on it...
Again assuming you have a 20GB model, you'll more than likely want (if not need) to replace the hard drive if you intend to keep using your H10. There's a handy guide
here of what drives are (probably still) available, as long as you find one that matches the dimensions of your old drive (it's 5mm thick, length and width shouldn't be too high a concern) and uses a ZIF connector you should be set. (If you go through
this section and look for a drive model that's 5mm thick and uses a ZIF 40 connector you'll be fine.)
If you have a 5GB or 6GB model, you may be able to replace the drive if you can find a 1" microdrive that will fit in it.