Desktop display is backwards like a negative image.

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The desktop display suddenly looks like a negative image on everything, dvd and all my photos. What to do? Help. 3 year old MacBook
 

chscag

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Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
System Preferences -> Universal Access -> "Display". Make sure "Black on White" is selected.
 

BrianLachoreVPI


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March 2011 15" MBP 2.3GHz i7 Quad Core 8GB Ram | Mid 2011 27" iMac 3.4 GHz i7 16 GB RAM 2 TB HDD
cntrl+opt+cmd+8 and a backhand for one of your friends...
 

BrianLachoreVPI


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Your Mac's Specs
March 2011 15" MBP 2.3GHz i7 Quad Core 8GB Ram | Mid 2011 27" iMac 3.4 GHz i7 16 GB RAM 2 TB HDD
See my post - someone was playing a little trick on you.
 

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