Re: Not a bug...
At this specific case a bit tricky. Z68-UD3H, Z77X-UD5H, Z87MX-D3H, and Z97-D3H. Sold under Lenovo flag, slaved to Microsoft OS. Then OEM bulk licensing. Service responsibility Lenovo duty.
Lenovo should be provided with the bottom of the stack. [Whose policies failed? Microsoft' or Gigabyte'? Who pressured who to not provide Lenovo with the bottom of the stack?].
Also Lenovo should request all the necessary images and diagnostics tools needed to reestablish functionality.