I’m having a problem starting my MacBook Air. When the computer is started a flashing folder with a question mark and the words support.apple.COM/Mac/startup appears on the screen. I cannot get this message to go away.

Scampbell61 Said:

"I’m having a problem starting my MacBook Air. When the computer is started a flashing folder with a question mark and the words support.apple.COM/Mac/startup appears on the screen. I cannot get this message to go away."

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Fixing This:

The Folder will stay there eternally, until it is fixed.

Three Things...

I. Go here: If your Mac Starts Up to a Question Mark - Apple Support

II. Mount the Drive:

Boot into Recovery Mode (Hold Down: [Command + R] upon boot). Then, using Disk Utility, see if the Hard Drive is seem. If it is, then see if you need to click the “Mount’ button for it. Try rebooting once more. If of no success, then click unmount button, and then the mount button. Try rebooting once more.

III. If Neither of the Above Works...

Reinstall the macOS:

Go Here: How to reinstall macOS from macOS Recovery - Apple Support. Important: Be certain to create a backup of your Mac prior to all of this. That way, you can have something to restore from the Mac from, should anything go wrong with the reinstall. Once reinstalled, try this once more.

You can visit support.apple.com/Mac/startup for details. Basically, your Mac can not find an operating system to boot. Whether that is due to storage corruption, a hardware failure, or some other issue is not clear.