imac 21.5inch problem not sure what please help!

Discussion in 'Mac Basics and Help' started by TrevorAD, Jan 22, 2011.

  1. TrevorAD macrumors newbie

    Jan 22, 2011
    Every time I play a game after awhile the screen either starts to flick black or my imac will just freeze. Im not sure if this is normal but in istat all my temps go up the highest is my gpu it goes above 70.
  2. MacTribe macrumors member


    Dec 26, 2010
    Definitely overheating then.. How old is the machine? I assume you've run all updates including any firmware updates?

    You could try following a few guides on opening up the iMac and blowing it out with some compressed air..

    Make sure you have the machine in a cool, well ventilated area.


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