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    Fan won't turn on when laptop is on battery power

    Discussion in 'HP' started by sparhawk909, Oct 19, 2009.

  1. sparhawk909

    sparhawk909 Notebook Enthusiast

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    I have a HP Compaq 2230S business laptop, but this question could be put to any HP laptop. The fan is constantly running when the laptop is plugged into the power outlet, but as soon as I pull the plug to run on battery power the fan powers down and stops. I re-plug the laptop back in and the fan kicks up again.

    This is not good as I almost burned myself when I picked up the laptop after an hour sitting on the table on battery power. The hard drive is right beside the processor, so the laptop gets really hot.

    Vista x64 Ultimate is what I'm using at the moment and my power scheme calls for 1% minimum and 100% maximum CPU on battery power.

    Any ideas?
     
    sparhawk909, Oct 19, 2009
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  2. newsposter

    newsposter Notebook Virtuoso

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    check your fan settings in the bios.
     
    newsposter, Oct 19, 2009
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  3. Th3_uN1Qu3

    Th3_uN1Qu3 Notebook Deity

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    Exactly. Default cooling policy for battery power in Vista's balanced profile is passive, which means do not turn on the fan but rather slow down the CPU.

    Not all machines follow this (mine don't) but yours seem to do so. Change fan policy to active and that's all there is to it.
     
    Th3_uN1Qu3, Oct 19, 2009
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