HT201177: Get help with video issues on external displays connected to your Mac

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Q: I have a start up issue with iMac 21.5 2013 model iMac14.1

I have tried it all as explained in apple's support publication: "OS X El Capitan: Ways to start up your Mac". When running diagnostics holding "D" key on start up, after running it the message was "No Issues Found".

OS X El Capitan (10.11)

Posted on Feb 19, 2016 12:47 PM

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Q: I have a start up issue with iMac 21.5 2013 model iMac14.1

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