A bit of a repost from the guide thread, but:
Gigabyte X79-UP4, firmware F4
8x4GB 2133mhz G.Skill Ripjawz
EVGA Superclocked GTX 570
Loading Unibeast 3.0.1 from 16GB sandisk cruzer or 64GB Sandisk SSD (just to rule out the thumb drive)
From Chimera, I've tried quite a few boot...