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HP Notebook PCs - Battery Does not Power Notebook or Hold a Charge

This document pertains to HP Notebook PCs with Windows 7, Vista or XP.

Understanding problems with a notebook battery

The notebook battery may have a defect if it will not power on the notebook and if it will not hold a charge. The battery indicator LED, located near the power icon , either does not glow or always blinks. Another indication of a battery problem is that the notebook operates correctly when the notebook is connected to the AC adapter.

A battery that will not charge may be the result of an AC adapter failure, a system board failure, or a battery failure. Perform the steps below to diagnose the failure.

Troubleshoot the power supply

To verify that the AC power supply is functioning properly, follow the steps below.

  1. Plug the AC adapter directly into a functioning wall outlet, and plug connector into the computer. Do not plug into a power strip, surge protector or secondary power source.

  2. Verify the following operation and take the appropriate action:

    • Verify that all power cord connections are secure.

      If the AC adapter connection to the notebook is loose, the connector may be damaged and require repair. Contact HP service and support for further assistance.

    • Verify that the power button or power LED is lit when the computer is on.

      Depending on the model, the battery indicator LED (also called the power LED) may be white, green, or amber when AC adapter is connected and is providing power to the notebook.

    • Verify that an LED on the AC power supply adapter is lit when plugged into an AC wall outlet.

      Some AC power adapters do not have an LED. In this case, if you have another AC power supply try connecting it to the PC and to an AC wall outlet.

    • Verify that the AC power supply adapter is the correct type.

      Older adapters were rated at 60 watts, but newer notebooks require AC adapters with 90 or 130 watts of power.

    The notebook was shipped with the correct AC adapter, however some people have multiple adapters and mistakenly connect the wrong power supply.

    If you needed to purchase a replacement AC power supply, be sure you use the notebook model number and check for the correct AC adapter part number at the HP Parts Store . You will also need to have the model number if you speak with HP Customer Service.

    View the See Also section for information about locating HP Help & Support in your operating system.

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Troubleshoot the System Board

If you've verified that the AC power functions properly, troubleshoot the PC's system board by following the steps below.

  1. Remove the battery, and keep the notebook connected to AC power.

  2. Press and release the Power button to start the computer.

    • If the notebook PC powers on , then the AC adapter and system board are functioning properly. Go to Troubleshoot the battery .

    • If the Power LED is off , then the AC power adapter may need to be replaced. Contact HP Service and Support for further assistance.

    • If the power LED is on , but the notebook PC does not power on, then the notebook PC needs to be repaired. Contact HP Service and Support for further assistance.

  3. Shut down Windows by selecting Shut Down from the Start Menu.

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Troubleshoot the battery

If you have verified the AC power supply and system board are functioning correctly, troubleshoot the battery by following the steps below.

  1. Insert the battery into the battery compartment on the bottom of the notebook PC.

  2. Connect the AC power supply and allow the battery to charge for 15 to 30 minutes.

    NOTE: The power LED, located near the power icon (displayed as a lightening bolt on most PCs) , should glow while the battery is charging.
  3. Unplug the AC power adapter cord from the notebook PC.

  4. Press and release the Power button to start the computer using only the battery as the power source.

    • If the PC does not power on, then the battery needs to be replaced. Contact HP service and support for further assistance.

    • If the notebook PC does power on, the battery is functioning, however you should run the HP Battery Check utility to evaluate the battery's health.

      NOTE: If you have purchased a second battery for your notebook PC or you have access to an identical battery, you can also check the battery by inserting the second battery into the PC and performing the Troubleshoot the battery steps again.

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