metaldc4life

I really need some help.. I recently purchased a p370em very cheap on ebay and when i try to power it all it gives me is a yellow light??? THAT'S ALL IT DOES! I have removed EVERYTHING from the board and it still gives me the yellow light so i know it still works i just for the life of me cannot figure out how to make it POST... Can ANYONE help me please??? And when i press the power button it does nothing... just that yellow light! =/ Thank You!