Have you ever encountered opening up your MacBook Pro from its sleep and then discovering that the colors on the display are distorted, and then corrects itself after a few seconds? This kind of issue seems to be occurring on multiple model years of MacBook Pro, regardless if it’s new or refurbished.
Even though there’s the possibility that this is caused by a software bug, running a diagnostic on your MacBook Pro will help you identify if it may be caused by a specific hardware defect. Below are the steps on what you need to do if your MacBook Pro’s display is experiencing a color distortion, and to isolate hardware issues.
Running Diagnostics on Your MacBook Pro
NOTE: The steps below applies to Macs released on June 2013 and later.
STEP 1: Disconnect all external devices from your Mac except for the following when applicable: keyboard, mouse, display, Ethernet connection, and connection to AC power.
STEP 2: Make sure your MacBook Pro is placed on a flat surface with good ventilation.
STEP 3: Turn off your MacBook Pro completely.
STEP 4: Immediately press the [D] key on your keyboard when you turn your Mac on again.
STEP 5: Release the [D] key when asked to choose a language.
STEP 6: Choose a language and the diagnostics will automatically take place.
STEP 7: Note any reference codes that you’re given after the diagnostics are complete.
STEP 8: Choose to run the test again, get more information, restart, or shut down your Mac.
STEP 9: Click Agree to send while in Recovery mode if you are connected to the Internet, and then click Get started.
NOTE: This will send your reference codes and Mac’s serial number to Apple.
STEP 10: Follow the service and support instructions that Apple will provide you.
For Macs from before June 2013, you’ll use the Apple Hardware Test, which follows the same initial steps as the diagnostics run on newer Macs. After choosing your language, do the following:
STEP 1: Click the right arrow.
STEP 2: Click Test.
STEP 3: Click Restart or Shut Down after reviewing your results.
If in case after running diagnostics and you’re able to determine that there is a hardware issue on your Mac, you will need to bring it to Apple or an authorized service provider to have it serviced.