i just returned a faulty asus deluxe motherboard but with the new board another problem. i have a red boot device LED light on. no other leds on the board are on. the fans are turning on the cooler, psi and video card. i have an i7 4770k, stock intel cooler , 2x8GB of corsair 1866 platinum dominator ram. psi is a seasonic platinum 760w. this is a breadboarded setup. i have tried removing the components in revrse order but the light stays on. no video output to the monitor thru either HDMI or Display port. i tried both the on board graphics and from my video card with both outputs. frustrated. what DOES a lit boot device light mean? have been searching these forums but still a confused noob.