Originally Posted by pujro

Just to update you on what happened....as I mentioned, it came back from Asus marked "no fault", I ran it for the weekend and it repeated the shutdown fault around 20times! I logged every detail and got them to take it in again. It came back last week, they'd replaced the motherboard due to an intermittent "northbridge" fault. Been ok ever since, pity they didn't check it out properly in the first place.