I have a Toshiba satellite P845t-S4310 and it wont turn on at all. None of the lights show up when I plug my charger in. Usually I would know I have to charge my laptop if I press the home button and a white light flashes but that white light is not there anymore. I tried the remove my battery and press the home button for 30 seconds ans that didn't work. Do i need new laptop battery?