Looks like no one’s replied in a while. To start the conversation again, simply ask a new question.

Level 1

8 points

Software Security update for MacBook pro 2012 and asked to restart then show this on screen and does not turn on!

Mac Pro

Posted on Apr 29, 2020 9:28 PM

Reply

Best reply

Level 10

240,215 points

Posted on Apr 30, 2020 2:25 PM

Hold alt key on startup & see if there's a boot choice, if not try CMD+r keys on startup.

View in context

Similar questions

Security Update 2019-007 10.13.6 I have tried to install this update on my MacBook Air several times and when it restarts I have a black screen with the cursor only. The update does not install. The black screen has now become an issue whenever I shutdown; the computer will not turn off so I have to hold the power button down until the computer shuts down. What can I do to resolve these two issues: the update install, and the black screen?
183 2
macOS High Sierra 10.13.6 of 12 Nov 2020 security update restart problem Dear Community, After downloading and installing the security update of macOS High Sierra 10.13.6 in 12 Nov 2020, my old al reliable MacBook Pro 7,1 mid 2010 will not restart and will not install the Security Update, I have to force shut down, does anyone has a workaround as of 17 Nov 2020 ? Thank you! Martita
477 2
macbook pro problem my MacBook pro won't restart i have to shutdown so i don't think i'm getting the right updates the security update won't go
133 1

3 replies

Best reply

Level 10

240,215 points

Apr 30, 2020 2:25 PM in response to Alexmoh

Hold alt key on startup & see if there's a boot choice, if not try CMD+r keys on startup.

Reply

Level 1

8 points

Apr 30, 2020 2:28 PM in response to BDAqua

Thanks, cmnd R worked and solved

Reply

Level 10

240,215 points

Apr 30, 2020 2:36 PM in response to Alexmoh

Great news, stay safe & good luck! :)

Reply

Software Security update for MacBook pro 2012 and asked to restart then show this on screen and does not turn on!

Welcome to Apple Support Community

A forum where Apple customers help each other with their products. Get started with your Apple ID.

Learn more Sign up