I have been overseas for the past 3 weeks, with my laptop off, at home. when I first tried to turn my laptop on again, it will not start. I have charged it for the last 24 hours. The charging light is on, but when I push the power on button, the button itself lights up for about 3 seconds before turning off again. Nothing else happens and it doesn't make any noise what so ever. It's less than 1 year old and I've never had any problems, prior to now. Any obvious ideas?