Please help!....My Acer 4736 Laptop will power up with battery and power adaptor connected to the power supply. But it will not power up and load windows 7, only half way and shuts down when working on its fully charged battery without the adaptor connect to the power supply. It is a new battery fully charged which was working satisfactorily before. ie The laptop will work normally when plugged in to the Power Supply, but will not power up to work on a new fully charged battery on its own as it dis before. Thanks