Laptop issue began as restarting over and over again. Now, nothing but a prohibited symbol shows

My laptop issue began as restarting over and over again. I googled the problem and put in a command it suggested. Now, nothing but a prohibited 🚫 symbol shows. What should I do?



[Re-Titled by Moderator]

Posted on May 7, 2019 9:06 AM

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Posted on May 7, 2019 8:15 PM

Please read this excerpt from About the screens you see when your Mac starts up - Apple Support:


"A circle with a line or slash through it means that the selected startup disk contains a Mac operating system, but it's not a macOS that your Mac can use. You should reinstall macOS on that disk."


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Laptop issue began as restarting over and over again. Now, nothing but a prohibited symbol shows

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