Q&A Forum > > Reply To: Blue/green “screen of death”? Start a new discussion August 30, 2020 at 9:44 am #44975 KimKomandoKeymaster @KimKomando Hi Brenda, It’s not good. :/ Let’s run first an Apple Hardware Test. Follow these steps and let us know what it says. Shut down your Mac. Turn on your Mac, then immediately press and hold the D key on your keyboard. Keep holding until you see a screen asking you to choose your language. When Apple Diagnostics knows your language, it displays a progress bar indicating that it’s checking your Mac: Checking your Mac takes 2 or 3 minutes.