I had an old laptop that I removed the screen from and it still booted. Perhaps if your screen has broken in a way that the GPU detects as a hardware failure, it might prevent booting? Maybe removing the screen entirely might solve the issue? Or at least disconnecting the internal cable from the screen to the motherboard…

That reminds of this interesting article on the order of words : https://www.bbc.com/culture/article/20160908-the-language-rules-we-know-but-dont-know-we-know