I have a Hp pavilion touchsmart model 17-1215dx. Well first some of my laptop had to reboot itself and when it did some of the keys didn't work. But I worked my way around it. But now it is not charging and completely dead so doesn't turn on. So changed the a.c. power adapter on motherboard, still didn't turn on. So took out bios and reinstalled. So now when power on the led light by the charger port blinks 3 x and doesn't turn on. Help me, please!! I need it to look for a job and school work.