After plugging in HDMI cable you receive a message of no signal detected or the screen will blink black is either an error in cable or drivers to the HDMI cable connectivity are not updated for a long time. But in some cases both the cable and the external display are working but after connecting it to the MacBook one of the device may not work.
If you are facing Black screen error in MacBook pro and you need to know How to Fix Black Screen Error on MacBook Pro. But to connect MacBook pro using HDMI port you need to execute below listed steps to fix various connectivity issues in MacBook pro using external device.
Steps to Fix MacBook Pro 2016 HDMI Not Working:
METHOD1: UPDATE MACBOOK
Step1: Open system preferences and click on update software.
Step2: Search for latest updates and click after selecting install the updates.
Step3: Update until you receive a message that system is up to date.
METHOD2: CONNECT CHARGING ADAPTER
Step1: Connect your charging adapter to your MacBook pro.
Step2: Check now that external display is connected to power supply and on.
Step3: Make sure the resolution and pixel settings are equivalent for both.
Step4: Connect HDMI cable to the MacBook and external laptop.
Step5: If display not detected follow method3.
METHOD3: RESET ALL THE CONNECTED DEVICES
Step1: Shut down MacBook and external display.
Step2: Disconnect all the connected cables and devices connected to it.
Step3: Wait for 5 minutes and connect external display to MacBook Pro.
METHOD4: SELECT EXTERNAL DISPLAY
Step1: Open apple menu and select system preferences.
Step2: Now Press display icon and select default for display.
Step3: Click on arrangement tab and select check box against mirror display.
Call MacBook Support Number 1-877-232-0717 to Fix MacBook Pro HDMI Not Working Issue
User can contact toll free 1-877-232-0717 if you are not able to fix connectivity issue in MacBook pro using external device. Contact MacBook Pro support number round the clock to get instant assistance by connecting to certified professionals online via remote sessions to fix issue in USA and Canada.