You can't install Windows on another computer and just move the Hard Drive over. Windows keeps a signature of your hardware specs when it installs, and a big change like motherboard, processor, or a large amount of misc hardware at once will cause Windows to fail at booting.
I recommend calling Zip Zoom Fly and requesting a Return Material Authorization (RMA) or contacting ASUS and doing the same. I've heard nothing but good about the quality of ASUS motherboards, don't give up on it yet. Get a replacement, my friend.
