Black screen issue on MacBook Pro
only black screen on my MacBook Pro and able to hear start up sound. caps lock key and Touch Bar working.
Go step by step and test.
1. Reset PRAM: Reset NVRAM or PRAM on your Mac - Apple Support
Settings that can be stored in NVRAM include sound volume, display resolution, startup-disk selection, time zone,
and recent kernel panic information.
The settings stored in NVRAM depend on your Mac and the devices that you're using with your Mac.
2. Reset SMC: How to reset the SMC of your Mac - Apple Support Choose the appropriate method.
Quote:
Resetting the system management controller (SMC) can resolve certain issues related to power, battery, fans,
and other features.
3. Contact Apple.
If steps posted above do not help,
Click inside the box to choose an option.
https://getsupport.apple.com/?caller=kbase&PGF=PGF63005&category_id=SC0245&symptom_id=23362