I am no expert in these things, so I can only relate what happened.
When the drive crashed, there was no temperature problem, the laptop not
having left my home for about a month or more. It had run normally a few
hours before and Speedfan which I use to monitor the drive showed no
problems. I shut the laptop lid down (sending the drive into suspended
state) as I always do.
4 hours later, I lifted the lid of the laptop and heard clicking and no
access to anything. In panic I kept it trying for 3-4 minutes. When nothing
happened I rebooted. Ctrl Alt Del did not work so I used the power button.
Still no drive and continuous clicking as the heads tried to read
something - unsuccessfully. I left it on for another 5 minutes or so. I
took the HD out and tried tapping it. Nothing doing. Did this several
times. Booted with the Acronis rescue disk (Linux), but the drive kept
clicking and still could not be recognized or found. Tried for about 2-3
minutes and gave up.
I went out and bought a new HD, installed it and restored my 1 month old
image backups. Took forever (almost 24 hours). Then I bought a HD enclosure
and used it to connect the bad drive to the USB port of a desktop PC.
Repeated all the above several times. Nothing and the clicking persisted.
On the desktop I searched the web for suggestions. Read about the freezer
trick but it said to use it as a last measure. When nothing else worked, I
put the hard drive in the freezer for an hour and tried again with the USB
enclosure. Not only did the clicking continue, but there was now a grinding
sound. Yet I ran it for about 3-4 minutes and finally gave up totally on the
HD. The advice on the web said that when a HD goes bad (including the
clicking sound), to stop it immediately or the drive becomes unrecoverable
even by the specialized outfits. I tried again a couple of hours later with
still no success.
One day later having nothing to lose anymore, I decided to put the drive
again in the USB enclosure and try again. Again the continuous clicking and
no access. Ran ontrack recovery software but it could not find the drive to
work on. Watched it run for 30 minutes while watching TV. No luck. Since
I considered the drive trashed, and I saw the led appear intermittently for
a second, I left the room and went elsewhere. 1 hour later I returned to
find the clicking gone and the drive and all its 3 partitions accessible. I
quickly backed everything up - twice. It was late at night so I then shut
down the laptop, sighing with relief.
Next morning (today), I restarted the laptop, attached the enclosed HD
curious to see if it still worked and: no clicking and smooth access to the
entire HD. I am now wiping it (as I write this) using Acronis utility, and
it is working smoothly.
I have no idea what happened, but as they say, "it is better to be lucky
than good - any day"!
Jeff