[SOLVED] How did my laptop display break?

[breaddddd]

I have it always closed since i got a external monitor, and i just noticed it just wont display. Is it because of overheating? Its usually pretty hot on the monitor, So now i am not sure if to buy a new display I also need the internal monitor for later.

 

[rgd1101]

maybe you switch to external only? read the manual to see how to switch it back

 

[breaddddd]

maybe you switch to external only? read the manual to see how to switch it back

it dosent work, even when i try to switch dosent even detect