mac pro won't sleep

Discussion in 'Mac Pro' started by zachiel1, Jun 22, 2012.

  1. zachiel1 macrumors newbie

    Jul 17, 2010
    I added a second optical driver for my mac pro 2010 8 core
    since then i herring every few socond the the driver trying to reada disk the yellow light is blinking' also i noticed that the computer is not entrung to sleep mode
    could you please help me about that

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