Chosen Solution

About a month ago my 2019 MacBook Pro was stuck on a blank screen. It’s like the laptop was still working, but the screen stopped working. There would be a sound when I plugged the charger in, I could hear the fans working, I could even charge my phone. But the screen stayed black. Eventually I found a fix online. I reset something by holding keys down after pressing the power button and it started working again. Anyways, this exact same thing has happened (black screen), but I’ve forgotten what I reset to make it work again. Can anyone suggest what I could try? It wasn’t the SMC or PRAM/NVRAM. It was another one which I found only after hours of searching. Any help would be greatly appreciated.

Does an external monitor work? The only other keyboard command is toggling AirPay on/off via the TouchBar AirPlay button or in the displays menu bar. Use external monitors with your MacUse your Mac notebook computer in closed-display mode with an external display