My MacBook Air is frozen when I started it again. What can I do ?

See the problem above

I would first try turning off the antivirus. If this is causing the problem, leave it off. At present, there are no known viruses for Macs, although this will change at some point. There is other malware, but you can avoid most of it on your own.

Similar Messages

A: my MacBook Air becomes unresponsive when logging in, and I decided to reinstall OS X Lion. When running the installer from OS X Recovery, it gave the error message "An error occurred while preparing the installation. Try running this application again."

I encountered the same exact problem when I attempted to re-installed OSX Lion on an old laptop. The date was set back in 2000, which rendered the certificate obsolete. Here's how I fixed it:
From the recovery menu, select the Terminal application. Run the 'date' command to confirm the date is wrong, then set the correct date using this command: date {month}{day}{hour}{minute}{year}
e.g. date 1219195613
Exit terminal (type exit). Retry the installation.

I encountered the same exact problem when I attempted to re-installed OSX Lion on an old laptop. The date was set back in 2000, which rendered the certificate obsolete. Here's how I fixed it:
From the recovery menu, select the Terminal application. Run the 'date' command to confirm the date is wrong, then set the correct date using this command: date {month}{day}{hour}{minute}{year}
e.g. date 1219195613
Exit terminal (type exit). Retry the installation.

  • My MacBook Air shuts down when its more than half way charged and won't turn on unless I plug it in to the adapter? Why is this happening and how can I fix it?

    My MacBook Air shuts down when its more than half way charged and won't turn on unless I plug it in to the adapter? Why is this happening and how can I fix it?

    If you really do have a Mid 2013 Mac Air model then it is still in warranty, as the standard Apple warranty is one year from date of purchase. So take it into an Apple store and have it diagnosed and fixed under the warranty. There is some type of hardware problem that only Apple can fix.

  • I updated to mountain lion, i have a macbook air and now when i shut it down, it takes incredibly longer than before to get off! why??

    i updated to mountain lion, i have a macbook air and now when i shut it down, it takes incredibly longer than before to get off! why??

    The honeymoon is over?

  • Hello, I was going to have my presentation on my macbook air. But when I putted it up on the big screen it wasn't a normal presentation. There was two pages at the time and a timer came up. How can I fix this as fast as posible? Thank's in advance.

    Hello, I was going to have my presentation on my MacBook Air. But when I putted it up on the big screen it wasn't a normal presentation. There was two pages at the time and a timer came up. How can I fix this as fast as posible? Thank's in advance.

    Your MacBook is using the big screen as the Presenter Display, and the MacBook Air display as the Show display. Tap the 'x' key to swap them during the show.
    Here is more information about using the Presenter Display.

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