My Imac 24" goes black screen after start up. Booting from original CD or CMD R don't work, both go black screen

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My Imac 24" goes black screen after start up. Booting from original CD or CMD R don't work, both go black screen

So, yesterday while playing a game of league of legends my Mac stopped running. After I resetted it, I got black screen after it the chime + loading bal.

So far I've tried:

CMD+R => black screen

Holding shift => black screen

Holding Alt => chosing the HR, the repair disk, or the original CD to reintsall => black screen

Holding S => got to the terminal, did the check up, it said it was ok, restarted => black screen

Took off the power cable, waiting at least 15 seconds, and everything back on => black screen

Holding Alt Cmd + p + R => black screen after restart

Removed 1 of the memories, then testen, same with the other one => black screen

I'm pretty much out of ideas at this point. Anything I've overlooked?

iMac, OS X Mountain Lion (10.8.4), Black screen

Posted on Aug 29, 2013 8:22 AM

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Answer 1

Eric Root

Level 10

684,039 points

Aug 29, 2013 9:52 AM in response to Scroefje

Any white text?

Startup - Black Screen/White Text

Startup – Red Screen

Startup Issues - Resolve

Startup Issues - Resolve (2)

Startup Issues - Resolve (3)

Restart the computer holding down the command - option/alt - P - R keys before the grey screen appears. Continue to hold until you hear the startup chime for the second time.

Reset NVRAM/PRAM

Try a SMC reset. The article covers when this is required, but doing this will not affect anything.

Reset SMC

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