Macbook air Prohibition sign

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If nothing is pressed soon, pressing the power button leads to a grey screen with a prohibition sign on a Macbook Air 13'' running Mountain Lion.

Attempt 1: Pressed Command+Option+R

Internet recovery on compatible network -> leads to this error:

apple.com/support
-3400F


Attempt 2: Pressed D

Internet recovery on compatible network -> leads to this error:

apple.com/support
-3400D

Attempt 3: Pressed Command+R

Prohibition sign.

Resolution input would be greatly appreciated.
 
Last edited:
M

MacInWin

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Please read the link in my sig and post again. From what little you've said, you've lost the hard drive.
 
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Your Mac's Specs
PPC Mini, 10.4.11. Intel Mini, 10.6.8. MacBook Pro, 10.14.6. M1 MBA 11.6.3 iPhone 5 iOS 12.5,
The prohibition sign means that the computer can't locate a startup disc. Try powering on while holding down the Alt key and see if the MacintoshHD disc shows. If it does, try selecting it and see if the Mac boots.
 

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