I have a Buffalo Linkstation NAS, model LS-X3.0TL-EU. It contains a WD Green 3TB hard drive. When starting it up recently the drive was no longer spinning. I can hear 3 soft clicks followed by another 3 soft clicks (presumably the platters trying to read the drive), then nothing at all. The blue light on the front of the NAS constantly flashes quickly (no sequence to the flashes) until the NAS powers down after a minute or two.
I took the drive out and hooked it up via an external enclosure and the same clicking sequence happens. I've tried it both on a Windows 10 laptop and a Windows XP PC just to cover my bases.
Unfortunately, this is the worst time possible for this to happen as my main laptop starting showing signs of HDD failure recently. I'd just made sure that all my photos and videos were backed up on the NAS before it died completely, and now the NAS has gone as well. I have some of my files on a third external HDD backup, but not all of the recent ones.
Is there a way of diagnosing a drive that won't spin up to find out whether it's the PCB, firmware or drive itself? Or any other suggestions to try and fix it?