Mac black screen issues after OS installation

Asked By Aabel Maverick 30 points N/A Posted on - 02/26/2015

 

I have an iMac 27” which was on Mavericks and then I installed Mountain Lion OS. Now the iMac gives a black screen yet the screen is powered. Whenever I click on sleep or if the PC goes on sleep mode by itself, it just fails to power up again. When I forcefully press the power button it then sounds like it is working well, but the screen is not showing anything. What could be the problem? Graphics card or Display?

 

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• Question Category: Displays / Monitors

Answered By George Hathman 0 points N/A #200306

Mac black screen issues after OS installation

This might be an issue with display drivers. While installing the operating system, all the system files were not properly copied. To try and solve this issue. RE-install the operating system once again and it should work fine. If that does not work, there might be a problem with the operating system you are trying to install hence you might need to find another copy.

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• Posted on - 03/11/2015
• Question Category: Displays / Monitors