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Frederick S.
Frederick S., Mac Specialist
Category: Mac
Satisfied Customers: 8694
Experience:  Worked with Mac OS X for two years as a support technician.
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my great granddaughter did something to my computer and now

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my great granddaughter did something to my computer and now it looks like a photo negative. how can i fix it?
Hi! My name isXXXXX look forward to assisting you! Do not forget to rate my answer quality before you go. Let's get started!

Happy to help

This sometimes happens if certain key combinations are pressed at once, usually at least 4 keys.

You should be able to change it back by pressing the following keys at the same time:

Press the Control-Option-Command-8 key combination.

This is a feature of Universal Access that you can turn on/off.

Thank you; be sure to rate me once you have no further questions. I'm standing by.
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