Fan constantly on fast and loud

Discussion in 'MacBook' started by Macgic, Aug 10, 2008.

  1. Macgic macrumors 6502

    Joined:
    Oct 23, 2007
    #1
    As the title says my fan is always on. It used to be on only when watching a movie or something of that sort. However, now when I open my computer the fan comes on within a minute. I wont even have a application on. Any suggestions? I have a macbook if that helps.

    I have tried putting my MB on a desk on my lap etc nothing helps

    thanks,
     
  2. misterredman macrumors 6502a

    misterredman

    Joined:
    Oct 3, 2007
    #2
    Check with Activity Monitor which process/application is using all the CPU. If an application is stuck using most of the CPU time it will heat up and the fan will be running fast.
     
  3. Macgic thread starter macrumors 6502

    Joined:
    Oct 23, 2007
    #3
    What should be running? I have a bunch of random stuff running. There's only one thing taking up a significant amount of space and thats Firefox.
     
  4. misterredman macrumors 6502a

    misterredman

    Joined:
    Oct 3, 2007
    #4
    It's normal to have many process running but try to order them by CPU (by clicking on the header).

    What are the top entries? Hoiw much CPU do they use?

    Also check the total CPU usage in the lower part of the Activity Monitor window. How much is inactive?
     
  5. Macgic thread starter macrumors 6502

    Joined:
    Oct 23, 2007
    #5
    activity monitor>1.2
    Firefox>.3
    systemUiserver>.1
    quicksilver>.0

    and everything else is 0.0
     
  6. FuuFuu macrumors regular

    FuuFuu

    Joined:
    Jul 8, 2008
    Location:
    Roselle
    #6
    it can also be the harddrive usage. i suggest you lower the performance so that it won't make such a big sound.
     
  7. misterredman macrumors 6502a

    misterredman

    Joined:
    Oct 3, 2007
    #7
    In those entries there is nothing than can explain the fan running fast. Did you select "All processes" in the top left corner in activity monitor? What does it show then? If it's set differently it won't show all the processes running on your system.
     
  8. Macgic thread starter macrumors 6502

    Joined:
    Oct 23, 2007
    #8
    Thanks that did it! I found one that was over 100.

    thanks,
     

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