High System CPU nothing is running

Discussion in 'OS X Mountain Lion (10.8)' started by ByXpert, Jun 2, 2016.

  1. ByXpert, Jun 2, 2016
    Last edited: Jun 2, 2016

    ByXpert macrumors newbie


    Jun 2, 2016
    Hello guys,

    I already reset my PRAM and SMC, but although there is no process running high in the activity monitor, my CPU system is well above 70%. I don't know what else to try. It is a late 2012 retina MacBook Pro, I changed the battery and fans as well and put some fresh thermal compound on the chips. The kernel_task process is at above 500 % Cpu. that will be the problem, but it i seems unrealistically high.

    My best regards
  2. Gav2k macrumors G3


    Jul 24, 2009
    There must be a service running, check activity monitor and cycle through the tabs.

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