High Speed Fan-iMac

Discussion in 'iMac' started by slabman, Aug 26, 2009.

  1. slabman macrumors member

    Jan 13, 2008
    Plano TX
    Last night my fan kicked into high gear all of a sudden. I shut it down overnight and when booting up this AM I find it still running on high...quire noisy, of course. Is there something overheating? How to make it run at normal speed?

    Ambient temps have not changed...80 deg. 20% CPU usage. 20 in. iMac 7,1, 2.4 ghz, 4 GB memory, etc.
  2. Hellhammer Moderator


    Staff Member

    Dec 10, 2008
    Download iStat Pro to see your fan speeds. Also, try SMC reset (shut it down, take out all cables including power cord for 30 secs, plug them in and boot it)

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