Almost impossible to diagnose most board issues. Bad capacitors used to be a prime suspect, but many boards use solid caps now. I would request an rma from asus if you have no surface damage or burn marks on the board. Handle with extreme care when you remove the board and ship it. Asus can be bad about customer service, rejecting boards for damage that can't be seen without a scope. It takes about 24 hours for asus to issue an rma. You only ship the board, not the accessories. Place the board in it's original box with anti-static bag, and place that box in another shipping box with the rma number written clearly on the outside.