Can I be certain it's a faulty hard-drive with these evidences?

[SilverSeal]

OK so my secondary computer has not worked for some months. Not really bothered looking into it until today. When I turn it on it clicks and then cannot really load the Operating System.

The sound sound like this: http://vocaroo.com/i/s1DLBJgPpDmD

Is this the notorious Click of Death for a 3.5" hard-drive?

If I disconnect (bus and power) the hard-drive it no longer makes the sound.

During boot among others the monitor displays things like

So with this, is it 100% safe to assume that the hard-drive is faulty (and hopefully nothing else is, but hard to say but most likely not)?

 

[herrwizo]

Almost certainly. But to be sure, it would be best to try it in a different rig as a secondary drive. If it doesn't work, you can at least try to salvage data from it.

 

[SkyNetRising]

So with this, is it 100% safe to assume that the hard-drive is faulty

Nope. The info is inconclusive. Could be bad cables also.

First picture just shows process of booting from network (it should be disabled, if you're not using it).
Second picture shows HDD being detected, doesn't show any problems.

Attach the drive to working computer, run HDtune health and post screenshot.

 

[SilverSeal]

So with this, is it 100% safe to assume that the hard-drive is faulty

Nope. The info is inconclusive. Could be bad cables also.

First picture just shows process of booting from network (it should be disabled, if you're not using it).
Second picture shows HDD being detected, doesn't show any problems.

Attach the drive to working computer, run HDtune health and post screenshot.

Thank you and herrvizo for the responses. Much appreciated.

OK, but what could be the source of the sound?

I put the hard-drive into my main computer (without re-using the busses/power-cables). It also made 6-7 loud click noises before it sounded like "screw this, I turn off myself" from the hard-drive (at least I assume it's from the hard-drive).

Other than that my main computer run fine, but it's like the hard-drive is not even there, like it physically shut down after the few clicks stops, long Before Windows has opened. I ran the program you suggested and it did not even named the hard-drive nor did the traditional disk manager in Windows 10 (I guess the Swedish interface might be a bit confusing but still shows the essentials). The hard-drive in question is a 1TB Seagate Barracuda (which I understand have a low reliability and it's about 6 years old). And it's simply not listed by neither of the programs (see attachments).

 

[SkyNetRising]

It also made 6-7 loud click noises before it sounded like "screw this, I turn off myself" from the hard-drive (at least I assume it's from the hard-drive).
Other than that my main computer run fine, but it's like the hard-drive is not even there, like it physically shut down after the few clicks stops, long Before Windows has opened.

If the drive is not being detected in BIOS and in Windows Device Manager/Disk Management and you're sure it's the one making clicking sounds, then yes - you can assume its dead.
Sorry about that.

 

[SilverSeal]

Thank you all for the responses. I was fairly certain it was the hard drive. I just wanted to make sure I didn't rush into any conclusions. It didn't really have any important information on it to be honest and it was probably about time to update to a SSD anyway.

Interestingly, when I added the suspected hard-drive onto my main computer, just me changing the busses order or something, apparently somehow made an almost completely unreachable hard-drive (the one called Galois, so not the one from the computer that would not start up) that I thought I had completely lost, somehow turned up much more availbale (but it still has many errors on it, but managed to salvage what I needed from that one at least) and can now be accessed even several hours after start-up, which is why I guess the suggestion that it could had been the cables was a good suggestion indeed.