Rohmister

Q: Imac 21.5 late 2009 require Pram reset at each boot

Hi my iMac need since couple of day a pram reset at each boot.

When he booting we can hear the start sound, and all go on. But the display stay black if i dont reset pram.

The actual configuration is OS X 10.11, and i can't access to the apple diagnostic test when pressing "D" at startup.

 

Someone have solution to access to "apple diagnostic test" or thing to verify.

 

Note when the iMac is start after pram reset, all run well.

 

Thank a lot!

iMac, OS X El Capitan (10.11.4), 21.5 inch late 2009

Posted on Apr 25, 2016 5:31 AM

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