I need a little help over here. I have a WD Black 1TB on my desktop. A couple of days ago my system just stopped (froze and I had to reboot). Since then, I could not start or even install a new OS on that drive.
I’ve made some tests with HD Tune Pro, and what I got is pretty weird: Looks like a heart beating… Find below
Clearly your drive has 4 heads. AFAICT the performamce dips are spread randomly over all 4 heads. One possible explanation could be a background Windows task which is interfering with the test. An alternative explanation might be oxidisation of the HDA contacts on the PCB. This is where the PCB mates with the headstack connector on the drive. You can clean these PCB contacts with a soft pencil erasr.