Step5: If display not detected and the issue is not fixed, you can follow method3, which is mentioned below METHOD 3: RESET ALL THE CONNECTED DEVICES Step4: You need to connect to the HDMI cable to the MacBook and external laptop. Step3: Check if the resolution, as well as the pixel settings, is equivalent for both. Step2: Secondly, you need to check the external display is connected to the power supply and on.
Step1: At first you need to connect your charging adapter to the MacBook pro If not the first method you can also follow the second method and that is mentioned below.
METHOD 2: YOU NEED TO CONNECT THE CHARGING ADAPTER
Step3: Get the MacBook Pro updated until you receive a message that says “system is up to date”. Step2: Second step is to search for the latest updates and then click the latest one to install the updates.
