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Black startup screen after latest update

how do I clear a black screen after latest update last week. This happened with the previous update too.

iMac Line (2012 and Later)

Posted on Sep 26, 2019 12:44 PM

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Question marked as Top-ranking reply

Posted on Sep 26, 2019 1:00 PM

Please reset the NVRAM and if necessary restart in Safe mode which could take up to 10 minutes to complete. After doing so please post an EtreCheck report of your system.


NVRAM reset instructions are in https://support.apple.com/en-us/HT204063


Safe Mode restart instructions are in https://support.apple.com/en-us/HT201262


Please navigate to the Mac App Store and download the free version of EtreCheck OR please click www.EtreCheck.com where you will find the app. Once you downloaded the free app and created the report please post it as your reply to this message. In order to post it, please use the following link for more detailed instructions on how to correctly include the results: 

 

https://discussions.apple.com/docs/DOC-250000211


We can then look for obvious issues that may be causing your problem.

1 reply
Question marked as Top-ranking reply

Sep 26, 2019 1:00 PM in response to loved2

Please reset the NVRAM and if necessary restart in Safe mode which could take up to 10 minutes to complete. After doing so please post an EtreCheck report of your system.


NVRAM reset instructions are in https://support.apple.com/en-us/HT204063


Safe Mode restart instructions are in https://support.apple.com/en-us/HT201262


Please navigate to the Mac App Store and download the free version of EtreCheck OR please click www.EtreCheck.com where you will find the app. Once you downloaded the free app and created the report please post it as your reply to this message. In order to post it, please use the following link for more detailed instructions on how to correctly include the results: 

 

https://discussions.apple.com/docs/DOC-250000211


We can then look for obvious issues that may be causing your problem.

Black startup screen after latest update

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