Question about Compaq Presario Notebook

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Battery does not charge

Battery will not charge while the computer is turned on with AC adapter connected. It will only charge when PC is turned off and then only intermittenly.

Have a Toshiba M35series laptop. Same problem. With AC connected battery will only discharge and will eventually discharge completely. If I turn off the PC or put it in hibernation it will charge, but only intermittently. Swapped out the power supply thinking it might be the connector but the new supply had the same issues as the old one. Thought about taking the battery out completely to see if it will run on AC only but have not tried this yet. Battery seems to discharge fine once it has been charged so I have tentatively ruled that out as the problem. I have same exact prob,what i think is happening is the heat that is being blown out is overheating the battery.

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  • bucky19103 Oct 12, 2008

    both components work so it might be the third.if it is my options are limited since my warranty has just ran out.



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Hi Bucky,

Regarding the issue you are having there are 3 possible problem here. It's either the ac adapter, the battery and the motherboard of your system.

To determine the cause of the problem you may try the following steps below.

1. Try turning on your system using the ac adapter only afterwards try using the battery.
2. Try connecting the ac adapter to a different power outlet and check if that could cause a problem as well
2. If the system works with both component then it could be an issue with the system board. If this the case you might need to call your computer manufacturer and check the latest version of BIOS you have. check also if the system is under warranty for part replacement.

Keep me posted.




Posted on Oct 11, 2008

  • Jeff R
    Jeff R Oct 12, 2008


    Try to check if you can update the BIOS of your system. Let me also remind you that if the BIOS update is not properly installed this could cause a major problem with the motherboard. You may encounter an issue in which your computer will not turn on anymore.

    Thanks. keep me posted




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Total Power Failure When Using a Battery
If an AC adapter is not connected to your computer, the computer's power source
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No. The problem is resolved.
8. Disconnect the computer from AC power. Is the the battery indicator still
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Yes. You may have a defective battery. Continue to step 9.
No. The problem is resolved.
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No. The problem is resolved.
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11. Turn on the computer. Is the power indicator off?
Yes. Your original battery is defective

good luck

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