If anyone is having trouble getting past splash screen in Odyssey, try putting cache voltage to auto in bios. I have no clue why this worked for me, but I spent 10 hours troubleshooting the issue. I have an i9 7980xe, so it was clearly not an Avx issue. After trying everything I could think of within windows, I resorted to resetting my cpu overclock and it worked. Then I went setting by setting putting back to my original clock and found cache voltage at auto fixed it. If interested I am using rampage vi extreme, but have a feeling this could apply for other mobos as well. Hope this helps someone