Sorry got busy and work. Any luck? None of lights stay on?
If not I would just double check and reseat everything, and for shits and giggles pull the cmos battery for 30s and put it back, if you haven’t already.
If nothing else works I would be thinking about RMAing the mobo.
If you can’t hear anything does your motherboard have a display? Did it come with a little speaker? Look in your motherboards manual for the best way to get error signals.
Did you give your computer at least 5 min powered on though?