OK, a few people in the thread have had some problems that sound similar to mine. This isn't my first Hackintosh build, but the first with this set of hardware, so I'll try to be as descriptive as I can.
My boot from Unibeast-made USB is failing just after DSMOS arrives (see screenshot). Other than -v, I have tried -x, GraphicsEnabler=No, PCIRootUID=0, and all three. None seem to make a difference.
I have the exact same board (ASUS P8Z77-V LK) except paired with a temporary Celeron G530 Sandy Bridge. I have reduced the hardware down to a single 8gb stick of ram, only a SATA hdd on one of the chipset-supplied ports, no graphics card, keyboard plugged directly into a USB 2.0 port on the back. The USB installer is also plugged into one of the USB 2.0 slots.
My bios settings are precisely the same as the OP's, except there isn't a 'disable secure boot' option, only setting secure boot OS to "other", which other sites say is the ASUS equivalent.
I have tried using the unmodded 800ish bios that the board shipped with, and then using PMFlash and FTK tools to mod and flash with 908 and 1001 versions, no effect.
I'm not sure it matters, but the HD has 3 partitions - the 100mb windows system partition, and empty 40gb partition, and then a 110gb windows partition (in order)
I'd appreciate any tips on what to try, I can tinker with it if I can just get to the damn install screen
Thanks in advance.
EDIT: Aha, plugging the USB drive into one of the 3.0 slots in the back got past it, but stuck on a "Still waiting for root device". I'll try some other things.
EDIT AGAIN: I was wrong, it actually wasn't getting as far with the USB in the 3.0 slot. Still stuck after ethernet.