MY ST31000521as 1TB Barracuda XT showing in bios as ST_M13FQBL

What is the way out with PL2303 and HYPERTERMINAL?

GURUs pleaseeee help.

It means it does not read system area at all. PCB is not original, or bad heads/surfaces.

yes, agree

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PCB is original so may be other problems. How to ascertain what is the problem.

Does it click and spin down?

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NO Clicking or spin sign. Only silent detection as above.

Do you mean that the drive does not spin up at all?

Could be worth trying another PCB then, but you WILL need to transfer the "ROM" chip to the donor PCB.

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yes no spin up only PCB getting hot.

Any way i can repair the PCB. Other than acquiring another PCB.

It is strange that the drive does not spin up at all, yet it identifies itself in BIOS (even with wrong parameters).

Are you absolutely sure the drive is not making ANY noise? Not even a silent buzz or hum? Power on the drive and put your ear onto it.

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No spin and no noise and PCB very hot means either the pack is really SEIZED AS A BRICK and/or power ASIC / MCU is really broken (hence the PCB is so hot). In any case the error = can't read SA at start at all. Sorry you can't repair it easily and it is also pointless if this is the scenario.

MY ST500DM002 in bios showed "ST_M13FQBL" yet and Capacity just 4141Mbyte.I think it is a firmware issue.