laptop does not show any hard drive

my laptop turns on and i can get into my bios.
but it does not seem to show my hard drive.
when i tried to restore my operating system i got the message no hard drive available. what does this mean

  Fruit Bat /\0/\ 18:45 17 Jun 08

Try removing and refitting your hard drive it my just be a bad connection.

Worse scenario is your hard drive has failed and you have lost all your data.

  Fingees 18:46 17 Jun 08

If it can't see your hard drive.
Try pulling the hard drive out, and reseating it.

It may possibly be that the contacts have become dirty,corroded over a period of time.

It's worth a try.

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