A few ideas (not in any particular order) ....
[quote=diggingdeeper]Try connecting it to HDMI then hit WINkey-P and select PC screen only?
tried that, it's fn+F8 and it won't let me change the output display from HDMI, it just doesn't register
Or if there are other ASUS hotkeys for switch screens try that.
Go into the bios and reset to factory.
sounds complicated... it won't permanently damage anything will it? the laptop has got programs (apps) and an upgrade from W8 to W10
Remove battery an press on holding power button for 1 minute then connect adapter to it followed by pressing power button. Now make a shutdown ,connect battery and adapter.
the obvious one, well it would be if the battery wasn't BUILT IN!!!!! no way of doing this without opening it all up and undoing loads of wires and stuff...