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Q: prohibitory sign on os x el capitan

i just installed El capitan on my macbook pro.

 

everything is fine, i can use my macbook with no problem. but after i restart my macbook, i have to login first and then the apple logo with progress bar appear. after that, i got Prohibitory sign.

 

what should i do?

thank you

MacBook Pro, OS X El Capitan (10.11)

Posted on Oct 3, 2015 8:17 AM

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Q: prohibitory sign on os x el capitan

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  • by lllaass,

    lllaass lllaass Oct 3, 2015 8:29 AM in response to aditnkp
    Level 10 (187,981 points)
    Desktops
    Oct 3, 2015 8:29 AM in response to aditnkp

    Prohibitory symbol

    When you see a circle with a slash symbol instead of the Apple logo, it means your Mac couldn't find a valid System Folder to start up from.

    If you're using your Mac at a school or business, it might be trying to start from the wrong version of OS X. Contact your IT department for more help.

    If this is your personal Mac, try reinstalling OS X by using OS X Recovery.