With my notebook comes graphic media accelerator 900 with 64 MB shared.Problem is....minimum size of memory for graphic is 8MB,maximum 64MB.Curently alocated is 8MB.J can't change size of memory in BIOS.It's locked??? In windows there no such option...Does someone now how J can change memory size on my graphic card?????   Another question...if my battery is in my notebook and J use AC DC adaptor,does my battery will "die" faster???