If you are very desperate to find out, you can try installing your mainboard in a computer case with only a Power Supply Unit and perhaps, but only if you wish to see the results of your actions, RAM, a videocard and a harddrive with Windows installed to see if it is able to boot.
However, you may damage these components, if there is still warranty on the mainboard I suggest you either see if you can get a new motherboard or have them test it for you.