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iMac can't log on white screen

So yesterday I installed OS X Server on my iMac.Everything was alright since then.

Suddenly today my iMac won't start,it is loading halfway at the Apple Logo and then white screen (and I also can see the mouse but that's all)


What I have tried:

- Reinstalling OS X Yosemite

- Resetting PRAM and RAM (Command key + option key + P + R)

- Booting up in safe mode (Which I tried pressing shift while power up and nothing happened

- Used the build in disc utility to repair disc (no problems found) and repair disc permissions (some problems where found and fixed, but did not fix the problem)

- There were no backups with Time Machine.


What should I do?

Thanks! I need an answer as soon as possible please!

iMac, OS X Yosemite (10.10.3), 27-inch Intel Quad-Core i7 2.93GHz 8GB 2TB

Posted on May 26, 2015 12:31 PM

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Posted on May 26, 2015 12:49 PM

Please carefully read the following link and carefully follow the steps as laid out. If none work, one of the closing comments say to take the machine into your local Apple Store or AASP for service.


Mac OS X: Gray screen appears during startup - Apple Support

7 replies

iMac can't log on white screen

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