Not sure if you are replying to me or the OG poster. But the this is the original hdd that came with the laptop (hp pavilion dv6) It had 7 first, then upgraded to 8.1, which worked fine. Then...

Hitachi HTS727575A9E364
I don't see any firmware updates.
Also, was working fine in win 8.1.
btw, it just froze again for a minute while just browsing internet.

Upgraded from win 8.1 pro, and my laptop freezes for a minute also (noticed when opening programs like photoshop, sometimes window explorer, chrome browser). In win 8.1 everything was running fine....