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<blockquote data-quote="pigoo3" data-source="post: 1770463" data-attributes="member: 56379">Very unusual issue.&nbsp; Don't think I've come across this before.&nbsp; I would have suggested checking the accessability preferences...but you already tried that.&nbsp; Usually if an external monitor is fine (which it seems to be in this case)...then the video hardware is ok...and the issue is either a bad internal video cable...or it's the display.Here's something simple that can be tried just in case...try doing an SMC Reset and an NVRAM Reset:<a href="https://support.apple.com/en-us/HT201295" target="_blank">https://support.apple.com/en-us/HT201295</a><a href="https://support.apple.com/en-us/HT204063" target="_blank">https://support.apple.com/en-us/HT204063</a>Fingers crossed one of these helps.<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />- Nick</blockquote>

[QUOTE="pigoo3, post: 1770463, member: 56379"] Very unusual issue. Don't think I've come across this before. I would have suggested checking the accessability preferences...but you already tried that. Usually if an external monitor is fine (which it seems to be in this case)...then the video hardware is ok...and the issue is either a bad internal video cable...or it's the display. Here's something simple that can be tried just in case...try doing an SMC Reset and an NVRAM Reset: [url]https://support.apple.com/en-us/HT201295[/url] [url]https://support.apple.com/en-us/HT204063[/url] Fingers crossed one of these helps.:) - Nick [/QUOTE]

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