I've got a relatively new laptop, it's about 5 months old and a Sony Vaio with original battery and charger. The problem started about a week ago. I had my laptop unplugged from the wall so it was draining the battery, once it got down to 15% I plugged it in. It didn't gain any charge but I presumed that was because I was using it, however when I put it on hibernate and later when I turned it off it still won't charge. I know there is some form of power coming in though because it holds charge at 15% and isn't draining any further. There's also an led light at the front that is blinking quickly when it doesn't normally do that. Any advice would be nice, because I know very little about laptops.