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2013 imac 27 inch stuck resolution

I recent picked up a 27inch 2013 imac. It was displaying full resolution when I first turned it on, but after I installed all new updates and sierra I am only presented with 1280x720 res. I have tried resetting the PRAM. Reinstalling sierra. And the option key to display other resolutions in the preferences. Pretty much everything I could google I tried... I am out of options and decided to make my own thread.

Posted on Apr 8, 2017 8:40 PM

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Posted on Apr 12, 2017 4:34 PM

Restart the computer in Safe Mode and then restart normally, if that doesn't fix it then re-install Mac OS again. If that doesn't work, then I'm out of ideas and you need to take it in to be looked at.

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2013 imac 27 inch stuck resolution

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