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    HP nx7400 CPU fan full throttle

    Discussion in 'HP' started by VidKo, Dec 16, 2009.

  1. VidKo

    VidKo Notebook Consultant

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    Hi!

    I've been using my nx7400 for more than 3 years. I undervolted it with RM Clock and it was always running around 45-52 degrees idle and 53-59 under load. The fan only kicked in under load and over 55 degrees.

    I changed the CPU fan for a new one, I changed the thermal paste for MX-3 and I regularly use compressed air to clean the heat sink.

    Lately, it's running full throttle in intervals even in idle and temperatures 45-50. (5-15 seconds full throttle, 10 seconds inaudible... and so on)

    I could always leave it on my nightstand 24/7 as it was inaudible, but now, it's really annoying.

    Any ideas?
     
    VidKo, Dec 16, 2009
    #1
  2. flipfire

    flipfire Moderately Boss

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    Did you update your BIOS by any chance?

    BIOS contains the fan algorithms to what temps the fan should kick in.

    I dont see why a new fan should do this.
     
    flipfire, Dec 17, 2009
    #2
  3. VidKo

    VidKo Notebook Consultant

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    Bios was updated more than a year ago.

    I'm confused too.
     
    VidKo, Dec 18, 2009
    #3