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I suggest booting your machine with a ubuntu live cd or knoppix 5.1
Knoppix has both qparted and gparted partitioners on it.
I have had drives that did not respond to gparted but responded to qparted and vice versa.
This is just to test if the drive can be talked to.
If any of the partitioners can read the drive information on the drive then it is likley ok.
You do not want to partition the drive at this moment, you just want to prove it is still somewhat functioning.
Next I would try one or more of the following free live drive forensic cds and try to recover the data from the drive.
Lastly I would disassemble the drive and use a usb adaptor kit to connect it to a known good USB port on your computer and then try the partitioners and forensic cd's again.
In the event that the data is unrecoverable but the partitions can be read, you may have to bite the bullet and delete the drive partition(S) and create new partitions. deleting the partitions will permanently erase the data.