Question about HP Compaq Presario V2000 Notebook

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Battery Evey time I put my laptop on it states I have a critical battery even though I am using the ac adapter. The battery flashies on and off then the laptop cuts out.

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Hi lizzielou,

I suspect that your ac adapter is not functioning correctly anymore. This could be easily verified with a multimeter. If you do not have access to one and/or don't know how to make the measurement yourself, I suggest taking the ac adapter and laptop to a computer or electronics repair shop where a technician can verify the ac adapter's functionality. If the ac adapter is at fault it will be necessary to replace it with a new/still functioning one.

I hope you find this information helpful in solving the problem.
Please take the time to rate this solution.
Kind regards and thanks for using the FixYa service.

Posted on Mar 22, 2008

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Firstly, try the following steps to check the problem:

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Advent modena m200 will not turn on or charge.


Connect the AC power adapter to the laptop and confirm that the AC power indicator is on (I wish you stated the brand of laptop). If the AC power indicator is not on, try and get a working AC power adapter for your laptop and connect it to your laptop.

With the AC power adapter connected, you can power on your laptop. If the laptop powers on from the OS you can see if the Battery is charging or not.
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My Dell Latitude D160 won't respond at all. I have to constantly push the power on button to even get it to come on and when it does, the battery light is on red and I think it says low critical power...


I'm confused too... it sounds like the power adapter is not (electrically) connecting to the laptop or the adapter is not delivering proper voltage/amps to the laptop.

You shoud 1. make sure that the AC plug is properly in the AC socket, 2. that the AC cord is (mechanically) connected to the adapter, and 3. that the adapter is (mechanically) connected to the laptop.

I cannot tell you how many laptops I have seen where the (internal) power connector breaks as a result of (typically) mis-handling, dropping, etc. Try (gently) wiggling the adapter connector and look for the LED changing colors.

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1 Answer

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It sounds like a mother board problem since you upgraded the bios and got different results. Try plugging in the adapter and warming it up. Will the computer run without the battery? that will also let you know if it's the battery.

My initial thought was that your AC adapter may have a heat problem or failing after a while. Wrap it in plastic and put it in ice and see if it lasts longer. If you have the same problem there are other issues going on in the computer power system.

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