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Have a compaq presario running win 7. The system does not recognize when it is running on ac power (original ac adapter). The battery charges but the only sign of this is the battery icon says xx% remaining (value increases). If I pull the battery once booted the icon shows being on ac power. If I reinstall the battery the ac icon changes to the battery icon and I am back to xx% remaining. The adapter will charge the battery back to 100%. If I try to boot with only AC power applied the system will not start (no lights DOA). If I pull the battery and tell the system to restart it will reboot using ac power only. Help!

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  • Gary Woodruff Aug 02, 2010

    I also booted this laptop using a live linux distro. The battery and power adapter were both seen an operated as they should. This is a windows problem.

    gary

  • Gary Woodruff Aug 03, 2010

    anyone have a solution that is not just re-installing the OS?

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Hi. Mainboard must have gone bad since its not recognizing the AC adapter and you need put the battery first and take it out upon boot up just to recognized the AC adapter. Try draining first the electrostatic energy on the motherboard since this is a board issue. Take out the battery and unplugged the power adapter. Press and hold the power button for 30 secs. Put the battery back in and plug in the adapter. Turn on the computer and observe. If same issue occurs, i suggest to contact your computer manufacturer and have the board replaced if computer is still under warranty. This is a hardware issue and not a software issue.

Have a good one!

Posted on Aug 04, 2010

  • Gary Woodruff Aug 04, 2010

    If it is a hardware issue why would a different OS work perfectly? Linux see's the battery and charger and icons respond as expected. This tells me it is not a hardware issue and is isolated to windows. I also see many people posting the same problem on other boards.

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Hello,

the problem is obviously from the battery. The battery cell has become bad, that's why its malfunctioning.

The symptoms you are experiencing are that of a bad battery. I think its high time y replaced the battery of your laptop.

Good luck.


Posted on Aug 02, 2010

  • 2 more comments 
  • Walesarumi
    Walesarumi Aug 02, 2010

    I also booted this laptop using a live linux distro. The battery and
    power adapter were both seen an operated as they should. This is a
    windows problem.

    gary

    Hello,

    I just saw your comment now. In this case, perform a windows update, as this should put your system back in order.

    Also, was everything (battery & AC Adapter) working perfectly before now? If yes, perform a system restore on your computer, this will revert your computer back to the time it was working perfectly. Restore the system to a backward date when it was working perfectly. To perform system restore go to Start menu > All programs > Accessories > System Tools > System Restore

    If that doesn't solve the problem, then it means you will have to reinstall windows operating system (Win Vista/XP) since the problem is a windows problem. This will definitely solve the problem.

    Take care.


  • Gary Woodruff Aug 02, 2010

    I did a repair install and that did not solve the problem. I do not wish to reinstall the Os from scratch as there are many programs installed that would have to be reinstalled. I simple search from google tells me this is a common problem people are having. Everything works as it should if I boot into another OS. The problem is windows but not worth a complete reinstall.

    Gary


  • Walesarumi
    Walesarumi Aug 02, 2010

    Hello,

    you can try the windows update in that case. But from the look of things, reinstall OS will be the best way to solve this problem once and for all. You can back-up your files if you are afraid of loosing them.

    I don't think there is any other way or method of resolving this problem since the battery and AC adpter is working well. Windows update might do the trick.

    Take care.




  • Gary Woodruff Aug 02, 2010

    System is current with all updates. I know a complete reinstall may fix the problem but that is a sledgehammer approach. Most OS problems can be solved by reformatting and reloading the complete OS but if I did that every time windows had a problem I would be reloading weekly. I am looking for a solution that does not involve the sledgehammer!

    thanks, Gary


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Hi, it seem as if your battery is faulty you should try another battery to see if the computer will recognize when it is charging, you can also try your battery in another compaq presario computer to see if it will have the same problem.

Posted on Aug 02, 2010

  • Gary Woodruff Aug 02, 2010

    I also booted into a linux distro, the battery and ac adapter work as they should with no errors. So I am confident there is no battery problem it is a windows problem.


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