if it doesn't show up on any computer, most likely it's malfunctioning.
as far as repair or data retrieval goes you will have to consult a data recovery specialist to find out if anything can be done. It largely depends on what has gone broke, I'm not going to get into details, but basically you will have to pay someone to take it apart and figure out what can be done to recover your data if possible.
I don't know any reputable services myself, best advice I'd say find a local place and see what they can tell you.
Best of luck