kernal_task 110% plus CPU usage, running hot, constant crashing/restart

Discussion in 'OS X Mavericks (10.9)' started by shiffd, Sep 1, 2014.

  1. shiffd macrumors newbie

    Joined:
    Sep 1, 2014
    #1
    Please help.

    Macbook Pro, 2010
    latest maverick 10.9.4

    machine acting really weird for about a week. Constantly crashing, freezing on load screen. Tried checking permissions and a million other things. The only thing that I can see that is weird is the stupid kernel_task is 110% and the machine is running super hot for no reason (even if I turn everything off, no programs running...or like when it is suppose to be asleep...)

    I think the crashes might be from overheating. IT also beeps and bleeps at me when it crashes.

    Please help. I tried doing SMC reset but it won't work. All I could find for directions was to turn the machine off and while it is off press controlshiftoptionpower all 4 keys at once. This is suppose to cycle the power indicator or whatever but it does not. It does nothing. How can I reset SMC if this isn'T working? Will this even help?
     
  2. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #2
    Kernal task is sort of like the traffic cop for all the other processes that run on a Mac. So KT showing 110% is a symptom of some other task running crazy.

    Start Activity Monitor and go to the CPU tab and sort by CPU % and see what other processes are there running high CPU%.

    When it beeps, is it three beeps? That means bad memory normally.

    Try running the Apple Hardware Test.
     
  3. shiffd thread starter macrumors newbie

    Joined:
    Sep 1, 2014
    #3
    All the other tasks are within normal bounds. The most usage would be if I also have Safari open and Safari can take a total of up to like 60% or so, but usually like 28% or something like that.

    As far as the Beeps, I think it has been 3. Sometimes I think its just 1. Its happened a half dozen times and it is always suddenly in the middle of trying to do something. I checked memory and Kernal task is eating around 700megs...which I think is too much isn't it? I have 2 gigs available though so should function. The crashes have happened in the following circumstances~ When doing absolutely nothing (like just turning the thing on and it crashes instantly), when trying to open a webpage, when trying to watch/while watching a video on net, when playing video games and when using open office. So to me it seems the crashes are something fundamental. sometimes I have safari or chrome open, sometimes not. And I generally speaking always end any and all programs before running any other. So there shouldn't be any one program open at all times when I have a crash. I use SMC fan control to control heat when playing some video games, but lately I have used it just all the time now because the machine is constantly so hot because of this kernel task problem.

    Thanks for the link, I will try that as well.

    Any idea how I can get a SMC reset to work? The directions I found online are not working and the battery when I open the case says 'warning do not remove' so I, for now, am not going to remove it to try that route.
     
  4. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #4
    Yeah... that three beeps is bad memory. Try the hardware test. Here is the SMC reset info, but I would be surprised if that helped.
     

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