Black screen while sound and programs are running

Discussion in 'iMac' started by athinamj, Jun 3, 2014.

  1. athinamj macrumors member

    Joined:
    Feb 8, 2009
    #1
    I have a new iMac 27'' late 2013 which I purchased almost 2 months ago.
    Today I experienced a problem I haven't come across before. While the iMac was idle with programs running and sound it tried to get to sleep or screen saver mode and the screen went black with the 4 four edges of the computer white. I wasn't able to bring it back by using the keyboard and the mouse so I pressed the power button and restarted. My keyboard and mouse are both Logitech just to inform. I have Mavericks fully updated. How can I fix this issue and what might be causing it?
     
  2. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
  3. athinamj thread starter macrumors member

    Joined:
    Feb 8, 2009
    #3
    No, it didn't happen but I will keep monitoring it!
     
  4. zeropointzero, Jun 4, 2014
    Last edited: Jun 4, 2014

    zeropointzero macrumors newbie

    Joined:
    Sep 5, 2010
    #4
    I have same issue. Late 2013 BTO iMac 27" 1tb sad, 32 GB ram, i7, and 780m video card. What I noticed, surfing internet, 1 or 2 programs running in back ground. I walk away or don't touch keyboard or touchpad for a few minutes. Screen dims ( normal) then goes totally black. I touch keyboard to "wake" system, screen wakes up black with backlight lit. I keep tapping keys and running fingers over touchpad, after a several seconds the web page images might reappear or I have to do a hard reset.

    All Mac software is up to date and I am not running any boot camp crap. Totally stock Mac software and stock iMac keyboard, touchpad. This happens every time I try to wake the system when the screen has just gone totally black.
     
  5. h9826790 macrumors 604

    h9826790

    Joined:
    Apr 3, 2014
    Location:
    Hong Kong
    #5
    Disable the screen saver may solve the problem.
     

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