The battery is less than six months old.
My son is experiencing the same problem. He was told by Alienware that it is likely an update that disabled the charging system.
They can undue the software but only on an update that requires at least a 10% charge of the battery. So they are saying the battery will have to be replaced to have at least the 10% CHARGE. Even with this they say there is a 50/50 chance that this won't fix it and could cause permanent damage to the motherboard. WHAT A GREAT SOLUTION.! He forgot to ask if this is a alienware, ms update or something viral.
Anyone else know what this "UPDATE" is. restoring to a earlier time did not fix it.