Really Odd Graphical Glitch

Discussion in 'iMac' started by Tech-Minded, Jul 27, 2011.

  1. Tech-Minded macrumors regular

    Jan 30, 2010
    I'm running a 2007 20 inch iMac with a 2ghz intel core 2 duo. This Problem occured while on right when I hit the mute button on my keyboard. Not looking for any troubleshooting because it hasn't happened since, just thought I'd share the abnormality.
  2. TMRaven macrumors 68020


    Nov 5, 2009
    Is that your hard drive making that knocking sound?
  3. Tech-Minded thread starter macrumors regular

    Jan 30, 2010

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