I did this the old fashioned way on an Acer monitor a while back, eliminating the 10-second logo when turning it on. I ended up dumping the ROM (8051 CPU), writing a disassembler and mapping out enough of the code to patch it, and threw in a strobed backlight mode since I had already decoded other things. It helped that the processor allowed register writes over the DDC channel on VGA, allowing easy testing of the changes before writing any code. I did have to short a jumper inside when flashing the modified code (over DDC). I'd never attempt such a project again due to how long it took, but with AI it would be far more reasonable.