I have two apxd1-dm motherboards I have purchased from a retailer to use in a custom CNC setup. I chose this motherboard for it small size and price. I can't seem to get either of them to power on. I purchased a new 19v power supply, have it hooked up to a monitor via the vga port and it just never powers up. These came from a reputable retailer that I have done lots of business with in the past so I think it is highly unlikely that I have two DOA motherboards. Any ideas on what to check? I have 4 GB of ram in each mothorboard and two solid state hard drives.