UPDATE: I tested the PC boot with different RAM (G.SKILL TridentZ RGB Series 32GB (4x8GB) DDR4 2400MHz instead of G.SKILL TridentZ RGB Series 32GB (4x8GB) DDR4 3600MHz), and again, the PC would boot to BiOS with 1-2 sticks of RAM in the slots, but not 3-4 sticks in at a time. I'm thinking I may...