my dad took this asrock 55 pro based pc off me. it worked fine when it left, its not booting now its sat in his study.

its the board that has the two switches on the bottom cornet, the reset and power buttons. andthe clear cmos on the back panel.

as soon as the mb sees power, these three flash. the self diagnosis led doesn't show an error code. this is on inserting power, before even pressing the power button to start the pc.

any ideas? could it be a popped motherboard?