HT204156: About the screens you see when your Mac starts up

Learn about About the screens you see when your Mac starts up

SKBright

Level 1 (8 points)

Apple TV

Q: No startup screen

No startup screen

MacBook Air, OS X El Capitan (10.11.1), Failed mbuf validity check: mbuf 0x

Posted on Sep 4, 2016 10:51 AM

I have this question too

Q: No startup screen

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Helpful answers

by Esquared,

Esquared Sep 4, 2016 11:14 AM in response to SKBright
Level 6 (8,405 points)

Mac OS X

Sep 4, 2016 11:14 AM in response to SKBright

Could you be a bit more specific? Is that "mbuf" error related to the issue? If so, it probably is a hardware failure.
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by Eric Root,

Eric Root Sep 4, 2016 11:30 AM in response to SKBright
Level 9 (69,582 points)

iTunes

Sep 4, 2016 11:30 AM in response to SKBright

Startup Issues - Resolve

Startup Issues - Resolve (2)

Startup Issues - Resolve (3)
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