so I haven't used my laptop in a while, it is a toshiba satellite c55-b5101 and I can't get the screen to turn on. I have charged it for a long time now and the light for the battery is white when plugged in. I can turn on the power button and the light turns on. I have tried many methods of like taking out the battery and charging without it then putting it back in and whatever but none have worked. does anyone have any advice? I need it to work ASAP!