My TOSHIBA SATELLITE E45W-C4200X doesn't have the removable battery. I opened the rear cover and got access into the battery. I unscrewed the battery and there is a line connected from battery to motherboard. I want to unplug the line from motherboard but I can't unplug it. My issue with laptop is when ac adapter is plugged in on wall and I plug it in the laptop, my laptop turns on just fine. But when I remove the charger from laptop and press on power button, it doesn't do nothing. Do note that my laptop battery is fully charged. Please help...