I am having the same issues, and had mostly given up. I tried 1.22 Beta3, with no additional luck. After going through the initial setup steps, I initiate the boot test. Computer turns off. I press power button, I get the HP boot screen for a few seconds, then a black screen. Then it goes back to the HP boot screen, and right into Windows. I'm using an HP Elitebook 840 G1, Windows 10 (UEFI).