One day after flying to colorado from California I turned on my laptop and it booted normally. When I started to adjust the screen, the screen turned off. All the lights on the keyboard and operating lights (power, charging, RAM, wifi, etc) were all on. I hit the power button and put it up since I wasn't able to work on it at the time. When I got home I plugged it into an external monitor via hdmi. It started and displayed the screen on the external normally. However there was still no screen activity on the laptop. It is an asus R510C series. Any advice or tips?