2

enter image description here

What does this mean and how can I get it off my computer?

3

This is called Target Disk mode, it activates when you start your Mac while pressing and holding the T key. Try to shut down your Mac with the power button and turn it on, it should boot properly.

USB and Thunderbolt icons on a black screen

See this Apple Support Document for the screens you could potentially see on start up.

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  • 2
    If it won’t go away, you may have a keyboard problem. – Mike Scott Feb 16 at 21:50
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    that was it thank you sm!! – Kate Barclay Feb 16 at 21:54
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    @KateBarclay Welcome to Ask Different! The preferred way of saying 'thanks' around here is by up-voting good questions and helpful answers (once you have enough reputation to do so), and by accepting the most helpful answer to any question you ask (which also gives you a small boost to your reputation). Please see the About page and also How to Answer. - From Review – fsb Feb 17 at 3:22

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