MacBook Pro Display is black and not responding.

- Try connecting an external display to help determine if you have a display problem

- Try resetting the SMC and NVRAM/PRAM

Intel-based Macs: Resetting the System Management Controller (SMC)

https://support.apple.com/en-us/HT201295

About NVRAM and PRAM

https://support.apple.com/en-us/HT204063

- Try starting in Safe Mode

OS X: What is Safe Boot, Safe Mode?

https://support.apple.com/en-us/HT201262

- Boot to Recovery and repair the startup disk

OS X: About OS X Recovery - Apple Support

https://support.apple.com/en-us/HT201314

- If it is repairable reinstall the OSX

How to reinstall OS X on your Mac - Apple Support

https://support.apple.com/en-us/HT204904

- If you do not have a backup use disk utility to restore the internal disk to an external disk so you can try to recover data.

Then format the startup disk and do a fresh install of OSX

If still problem, make an appointment at the Genius Bar of an Apple store since it appears you have a hardware problem.

Apple Retail Store - Genius Bar

https://www.apple.com/retail/geniusbar/

If you get the startup chime, connect the MBP to a monitor. If the monitor is also black, there is a GPU problem with the MBP. If the Monitor shows a good image, there is a display or display connection problem. An appointment at an Apple store genius bar will result in a definitive diagnosis. The evaluation will be free.

Ciao.

Was this ever dropped or had liquid spilled on it?

If there is no chime and nothing on the screen the CPU is probably not turning on. This logic board will likely need to be repaired.

<Edited by Host>