installing OS X

Hi there!

Try to reinstall macOS from internet recovery:

1. Press the power button on your Mac to turn it on, then release the power button and immediately press and hold the Option key, Command (⌘) key, and R key until you see a spinning globe. If you can't start up from Recovery in this way, review the guidelines for using startup-key combinations.
2. If you're asked to select a user you know the password for, select the user, click Next, then enter their administrator password. 

When you see a window with the option to reinstall macOS, your Mac has started up from Recovery.

1. Select the option to reinstall macOS.
2. Click Continue, then follow the onscreen instructions.

-Jack

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