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    DM4 battery suddenly not working

    Discussion in 'HP' started by toxicmegacolon, Sep 9, 2011.

  1. toxicmegacolon

    toxicmegacolon Notebook Enthusiast

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    Hi all,

    I have an 18-month old HP dm4t laptop (that this site helped me buy!). It has more or less performed well so far, with a couple of minor hiccups, but last night my battery started acting very strangely. Even though it had been plugged in for 2+ hours, the charge % read "0%", and when I unplugged it, it immediately shut off. When I turned it back on, I got an error message:

    "The system has detected the storage capacity of the battery stated below to be very low. For optimal performance, this battery may need to be replaced.
    Primary (internal) Battery (601)"

    I then tried to do a battery diagnostic through HP support assistant, and after failing a few times it came back with "Status: Replace(40)", with failure ID: REOOW. I would just assume the battery needs replacing, but literally yesterday it lasted nearly 3 hours without a charge. Any ideas as to what I can do/what might be going on?

    Thanks,

    Josh
     
    toxicmegacolon, Sep 9, 2011
    #1
  2. lmanlo

    lmanlo Notebook Consultant

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    You can try this, this will reset the battery information:
    Step 1:
    1. Remove the adapter and the battery from the notebook.
    2. Press and keep holding the power button for 2 minutes.
    3. Connect the adapter and the battery.

    Step 2: Download and install the updated BIOS if you haven't

    Step 3: Power management re-installation in windows 7 operating system:

    1) Click on start and type device manager in search field.
    2) Click on device manager in the list.
    3) Click + next to system devices.
    4) Right click on following controllers and select un install one by one. Uninstall only the options that are available in the notebook from the following options.
    a) ACPI Fan
    b) ACPI Fixed feature button
    c) ACPI Thermal Zone
    d) ACPI compliant system

    Restart your notebook after uninstalling all above controllers from device manager. Operating system will install new drivers automatically on restarting notebook.

    Step 4: Completely drain the battery and then again recharge fully before you use it.
     
    lmanlo, Sep 9, 2011
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