Hi. After having installed Security Update 2017-001, a few days ago, my MacBook Pro sometimes won't start on. Actually after every new update I need to hold power button for 10 sec., and then he starts normally.

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Branimir2017 Author

Level 1

12 points

Hi. After having installed Security Update 2017-001, a few days ago, my MacBook Pro sometimes won't start on. Actually after every new update I need to hold power button for 10 sec., and then he starts normally.

Hi. After I had installed the Security Update 2017-001 on my MacBook Pro, few days ago, ever since (after I do another update) he won't start normally: I need to hold power button for like 10 sec., and a then he starts normally.

Is that, actually, normal?

Thans...

MacBook Pro (Retina, 15-inch, Mid 2015), iOS 11.2

Posted on Dec 9, 2017 12:22 AM

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Answer 1

dominic23

Level 10

83,904 points

Dec 9, 2017 3:09 AM in response to Branimir2017

That is not normal.

Go step by step and test.

1. Reset NVRAM/PRAM. http://support.apple.com/kb/PH18761

2. Reset SMC. Choose the method for “If the battery is non-removable”.

https://support.apple.com/en-us/HT201295

3. Start up in Safe Mode. https://support.apple.com/en-us/HT201262

Once in Safe Mode, click the “Restart” button at the bottom.

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