For years Sierra worked like a cinch, after installing it from a Vanilla Olarila 10.12.6 USB stick ... but today, it started refusing to boot all the sudden ...
AppleKeyStore Errors make it went into kernel panic, but the problem is now worst, because even the USB Sierra installer is rebooting when I try to run it from Clover!!!
I've used an old Yosemite stick in another hard drive and installed Yosemite, and it's working fine, but Sierra, for some reason REFUSES to boot ...
I've tried everything, disabling hard drives, just booting without anything but the USB stick ... always the same problem
and now even using just the USB stick to boot into Sierra, fails!!! with a reboot!!!
My configuration, is an ASROCK H61M-VG3, the motherboard doesn't have any video, so I am using an ATI Radeon 6870HD, and 8Gb DD3 RAM ... recognized as 1600 by Apple but the UEFI recognizes it as 1333...
2.59 GHz Intel Core i5(Dual core CELERON)
working fine until yesterday, the only kext, I installed was VOODOOHDA ... that's it ... but it worked fine with it for a week ... so it's weird it can be the culprit ...