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1.86GHz or 2.13GHz Processor, 128GB or 256GB Flash Storage

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MacBook stuck in a boot loop

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This is the 1st screen that shows up upon turning the laptop on.

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This is the 2nd screen. This restarts the laptop and takes it back to the 1st screen.

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This is the eventual last screen that shows until you turn the system off or restart it.

It seems the Operating System bricked during the last update after Yosemite.

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This link may help you out, it deals with the Mac reboot issue. How to address a constant reboot loop in OS X https://www.cnet.com/news/how-to-address...

Hope this helps

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You'll need to re-install your OS as something is corrupted.

Boot up in recovery mode (holding R key when you restart) that should allow you to start. But before you do anything you want to create a bootable USB thumb drive following this guide: How to create a bootable macOS Sierra installer drive or this guide if you have High Sierra: How to create a bootable macOS High Sierra installer drive

The reason you want the external OS installer is you'll need to do a complete wipe of the drive and re-format it. If you have anything important make a backup while you can before you do move forward.

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Josh Marx sarà eternamente grato.
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