I have a Z370 Aorus ultra gaming 2.0 motherboard with 2 8GB Corsair Vengeance rgb pro Ram installed in the 4 and 2 slots (channel A). Everything boots and the pc has been running fine for months. I recently purchased 2 more 8GB Ram stick that are identical to the ones installed. I installed them in the remaining slots, 3 and 1 (channel b), but the pc will not boot. It powers up for about 30 seconds, but the powers down and repeats. The monitor never turns on. All the RGB on the ram sticks work and are in sync. Please help.