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Apple Computing Products:
macOS - Desktop Hardware
Possible GPU failure
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<blockquote data-quote="pigoo3" data-source="post: 1919595" data-attributes="member: 56379"><p><u>By the way...two important troubleshooting steps were not mentioned:</u></p><p></p><p>* Connect an external display to the 2013 iMac to see what is seen on the external display.</p><p>* Try to boot 2013 iMac from an external drive with the macOS installed on it.</p><p></p><p>Nick</p></blockquote><p></p>
[QUOTE="pigoo3, post: 1919595, member: 56379"] [U]By the way...two important troubleshooting steps were not mentioned:[/U] * Connect an external display to the 2013 iMac to see what is seen on the external display. * Try to boot 2013 iMac from an external drive with the macOS installed on it. Nick [/QUOTE]
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Apple Computing Products:
macOS - Desktop Hardware
Possible GPU failure
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