Glad you can find another retailer, no one else is have that luck in the US anyway.
What codes did you get on the display?
Did you update the BIOS to at least 0802 before trying to power it up?
Did you try safe memory or safe boot?
Did you check the positions of the switches that none are on and the dip switches for PCIE slots are on.
I had the same issue initially. PCIE switches were off and the show stopper, the pause switch was on. My guess is you returned a perfectly good MOBO that just needed to be configured correctly.
“Two things are infinite: the universe and human stupidity, I'm not sure about the former” ~ Albert Einstein