I have a computer with the ECS MCP61M-M3(1.0A)Motherboard and an AMD Phenom II X2 550 3.1Ghz Black Edition processor running Windows XP Pro. This was built last November but recently started shutting down at any time. It goes through the whole boot sequence when the computer is turned back on. It will shut down while idle or while in use. I added a case fan in case it was heat related but that did not help. Any help greatly appreciated...