Quote Originally Posted by GregoryDonner View Post
You have a point there; however, my SATA3 boot drive is on the first SATA3 port (using the Marvell SATA3 AHCI drivers)
Even ASRock doesn't recommend using Marvell controller for booting. Try connecting your hard drive to Intel controller. From the movie I would say that controller settings are different. Try switching to IDE mode and see if it helps. Then apply regfix for activating AHCI, reset computer, go to UEFI, change controller to AHCI and then boot to Windows. It may be because ROM has changed in recent UEFI and now the drivers are not working so good. Did you tried booting to safe mode and uninstalling/reinstalling drivers?

And what is the exact error code, because it is hard to read from picture. Is it 0x0000007B? If so, it either suggest controller mode error, or broken HDD.