I've had my laptop for almost 2.5 years and have never had power problems until today. I was using my computer for a few hours, then I stopped and did other stuff for a while and came back to find it asleep (even though I have that disabled). After fiddling with all the possible physical connection problems (outlets are fine, confirmed by other devices), I noticed that the green light on the charger won't come on. Is this a sign of death or is it something I can fix?