Shows momentary signs of laptop?
Does the hard drive spin up and stop, or can you hear the fan click on and off. Do the LED’s change state when you press the power button, even for a moment? Does the screen show any changes, even just a passing ghost of an image or some bright spots along an edge? All of these may be signs of powering up with a stone dead battery or a battery with an internal wiring failure in a laptop that requires the battery like battery for toshiba satellite A70 presence as part of the basic power circuit, usually as a giant capacitor.
