Hi! I have a less than a month old WD Black 1Tb. And It became unresponsive. It would make my computer hang, and every program unresponsive. I keep my task manager open and there I would see the Disk usage at 100% every time it hangs, even when all of the process show 0MB/s to 0.1 MB/s of disk usage.
I used HD Tune Pro, and the Transfer Rate would go up and down-- it would go down whenever the HDD becomes unresponsive, resulting to a minimum transfer rate of 0.7 MB/s the access time is 19.2 ms! The unresponsiveness sometimes occurs even after booting the PC, during log-in screen and right after.

Please take the time to look at the screenshot of the HD Tune check I did and see for yourself what is wrong with the diagnostics. Thank you so much!
I used HD Tune Pro, and the Transfer Rate would go up and down-- it would go down whenever the HDD becomes unresponsive, resulting to a minimum transfer rate of 0.7 MB/s the access time is 19.2 ms! The unresponsiveness sometimes occurs even after booting the PC, during log-in screen and right after.

Please take the time to look at the screenshot of the HD Tune check I did and see for yourself what is wrong with the diagnostics. Thank you so much!