Why would someone post something that is not applicable? If the computer never reaches a lock screen or sign in screen, how would this magic shift+power button work? I wish there was someone who would respond with a half way thought through answer to this issue. I get a please wait then black screen too.
I have a usb ready to boot and recover with but if i can't see the recovery advanced settings reset from usb option. Then someone needs to please tell me how to get to the old school boot menu that XP had?
And safe mode doesn't even attempted to start up.