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#21
I don't know if its a mere coincidence or what, I happen to have a ASUS x510UNR with the exact same hard disk and I have this same issue. I even got my HDD replaced from ASUS but the issue still persists. From my observation, this happens mostly when some process does I/O operations on a large number of small files. It feels as if the HDD's queue becomes choked due to the large amount of tasks (shouldn't happen though). I have linux installed on this as well and it also faces this issue when it gets an update or performs heavy I/O.
Funny thing is that once this happens, this continues to persist even after reboot, on other OS as well and goes away only if i give it some time and let it do what it wants to. I guess the firmware on this disk is to blame as I have seen people on forums having HP and lenovo laptops report same issue with this HDD. My firmware is SDM2 though.