Mass exit from standing Seagate st3250310as - what can be?

Question

Iron

Computer class, worked for a long time under the control of Win XP SP2, to update the special. software needed to install SP3 on the machines, after which, on subsequent startups, a significant slowdown in the operation of the OS was noticed, some computers stopped turning on. Reason: unstable operation of hard drives (on all 15 machines at the same time!)
MHDD tests showed the following - no bad sectors were detected when scanning the surface, a full volume check shows a stable response of all clusters without bad zones - i.e. the disks are alive (they can both read and write), but when the computer is turned on, the disks are detected by the BIOS for a long time, when sending the simplest commands to MHDD, for example, a read head movement test, it causes a delay of about 5 seconds before the command is executed, and so on for any action - for example a surface scan (F4) from an arbitrary sector also causes a delay before the start of execution, and the first (random) checked cluster is marked red as having a long read time.
They tried to disassemble one disk - it was crystal clear inside, no dust got in (and dust would cause an unstable cluster response time in the test, and the surface test is ideal), they tried to clean the contacts on the board - the same result - a time delay before executing any command.
What could be? is it possible to somehow reanimate the disks - after all, the mechanics are working, and so that it cannot be on all 15 PCs at once ...
Photo of the
S.MART disk

Answer 1

first, try to boot from any LiveUSB (preferably *nix) and check the disks from there. Second moment. Where did you download SP3 from? Did you check the package for viruses before installing it? Has there been any recent upgrade? Well, for example, they stuck some kind of flash drive everywhere? Did you use third-party programs when updating? Well, let's say for disk cloning?

Answer 2

Well, firstly, in smart you can see that the realokeites have already gone, which means the disk is already not good. 197, 198 attributes.
Secondly, to open the disk to look, in this case - this is a senseless barbarity.
Most likely, all computers are about the same age and similar configuration, respectively, the disks in them came to an end in about the same way, perhaps the installation of service packs simply gave too much load.
The delay in the response of the screw to commands is usually associated with error handling.
Good thing the screws need to be replaced. But if you really want to repair and figure it out, then you should find a UART adapter with TTL levels, for example, www.ebay.com/itm/Replace-FT232-6Pin-USB-2-0-to-TTL...
and study the topic about seagates on ru-board all partsforum.ru-board.com/topic.cgi?forum=84&topic=4737&s...
It is worth remembering that data disappears during the repair process!!!

Answer 3

Try to look at the update for the bios of hards, there may be something similar to the "CC fly", of course, if it's not it (CC fly).
ps. googled, your hard drive is on the list of equipment susceptible to Fly CC, so the probability is 99%