I have a one year old Inspiron 5150. I had my charger on for several hours and when I unplugged it to carry my computer to another area of the room the power alert said I only had 3% remaining. I checked to see that everything was properly plugged in, it was. Then I tryed unplugging the adapter then replugging it. The little light blinked about once or twice then never again. I don't understand what's wrong. Is this a problem with my battery or the charger. I figure the battery, but what can I do about it?

thanks.