Loud humming sound on Macbook

Discussion in 'MacBook Pro' started by lsawtell, Oct 10, 2011.

  1. lsawtell macrumors newbie

    Aug 22, 2010
    The last week or so, my Macbook Pro has had a strange loud hum that goes off and on. It almost sounds like a small scooter that is revving at high RPMs. It also hums off and on occasionally like it is trying to "start up", almost the way you would start a lawn mower with a hand pull. I apologize for the terrible descriptions but that's all I can come up with. The computer itself seems to be running just fine. Is there anything I can do, any resets or anything? Thanks for the help!

  2. Macman45 macrumors G5


    Jul 29, 2011
    Somewhere Back In The Long Ago
    It sounds

    Like a fan bearing might need checking / replacing.

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