Thanks, and yes, "both" ATX power connectors (24-pin EATXPWR 2x12 andRodney Pont said:You have connected the secondary ATX power connector haven't you? I was
just reading the Asus X99-Pro manual and noticed it said that the
system wouldn't boot without it being connected.
8-pin EATX12V 2x4) are connected to mobo.