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Keeps powering on and off.

When you turn the Dell Inspiron 7800 on it keeps powering on & off.Till you un plug the a/c adpater.And it trys to Boot.

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  • dewyshd6116 May 20, 2009

    I have complety cleaned it.Don't

    have a battery yet.But have a new a/c adpater.

  • Ben Wabnick
    Ben Wabnick May 11, 2010

    Remove the battery and only hook up the ac adaptor and see if the laptop acts normal. If it does then either your battery is defective or the power is so low that it can't get enough juice out of the battery.




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  • Dell Master
  • 2,404 Answers

Keep in mind since you cleaned it out, only have the AC adaptor hooked up to rule the battery out. If the laptop stays on with only the ac adaptor hooked up and doesn't shut off then you know that the battery is faulty. If it still shuts off even with just the ac adaptor hooked up then it could be the ac adaptor.

Also check one more thing, with only the ac adaptor hooked up, wiggle the cord where it plugs into the laptop and see if the laptop shuts off, if it does then the dc jack on the motherboard is loose and needs to be resoldered back into place so it stays put.


Posted on May 20, 2009

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  • 3 Answers

It might be over heating try opening it up abd cleaning it out. if that dosent work you might need a new power supply, or bios update.

Posted on May 14, 2009

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