High Sierra Update Problem - Stuck at Attempting System Restart ... MACH Reboot

I'm trying to update from Sierra 10.12.6 to High Sierra 10.13, but after my system restarts it freezes at "Stuck at Attempting System Restart ... MACH Reboot." I've tried dropping MATS and DMAR tables, and disabling iGPU, but neither have worked.

I am using * Gigabyte GA-Z87x-UD3H * Intel i5 4670k * Asus GTX 760 2GB * Samsung 840 Evo 120GB SSD * Corsair 16GB 1600 MHz RAM

Any help would be greatly appreciated.