Hi, @forestial ,
Try connecting an external monitor to the micro HDMI port on the laptop and check if there is a display showing on it when the laptop is turned on.
(A TV can also be considered as an external monitor since it has HDMI inputs - you'll probably need a micro to standard HDMI cable to make the connection between the laptop and the TV though)
How long did you hold the Power button to try and turn the laptop off?
This should force shutdown the laptop if you hold it for about 10 seconds or more.
If it doesn't then you may have to get drastic and disconnect the battery (Steps 1,2 & 4 miss 3 and do up to Step.4 only) to turn it off and then reconnect it and start the laptop again and see what happens. Be gentle when you pull out the battery connector, do not pull it out by the wires as you may pull the wires out of the connector. Be careful that you don’t slip with any tools once the laptop is open as it is live and you may damage it electrically (and mechanically) if you do. Be careful!