Nothing, nada, nowt. I've tried different combinations of power and battery, held the power button down with no power available at all (as directed by the support people) and nothing at all.
It was pretty much 6 months ago when I had that laptop in the shop for a dickey screen, and now this. I am gutted, I can tell you.
Fortunately I still have my Eee, so it won't be all that bad... but it does raise questions about The Bugcast for the next couple of weeks. I'll make a decision on that shortly.