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Q: Updated Yosemite -> now in grey screen when booting

I have downloaded the latest update of Yosemite today. After the download was completed my mac book air was supposed to restart, unfortunately it only took me a completely grey screen (no question mark, no apple logo, no install bar).

 

I have followed all directions I could find on here:

 

- normal restart (keep the power button pressed for longer) - no result

- tried to start in safe mode with SHIFT but didn't work

- tried the internet recovery mode (boot with COMMAND + OPTIONS + R simultaneously), didn't help either

- I am not using McAfee which has been mentioned as one potential source for the issue

- PRAM reset doesn't work either

- tried COMMAND + OPTION + SHIFT + ESC to get around the frozen grey screen, no luck

 

does anybody has any similar experiences or any solutions?

MacBook Air

Posted on Aug 17, 2015 1:28 PM

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