Question about HP Pavilion DV6500T Notebook

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Failure to start

I have a HP Pavillion dv6500. It will not start up at all. I noticed the battery was discharging last night and would not charge despite being plugged in. I checked all the leads and the power input light (blue) was illuminated suggesting that the power was getting to the laptop at least. I think it is the battery but i am surprised that it will not work even when plugged in - does it require the battery to be present and working does the laptop need the battery to be able to take a charge - will a new battery resolve the problem?

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  • HippoRabbit Jun 16, 2009

    No, it does not work with the battery removed at all, nor does it work with the battery in but the power light on the side where the power lead plugs in continues to work with either battery in or out. The only difference between the battery being in or out is that with the battery in the little blue light on the front flashes when i press the 'power button' where with the battery removed the little blue light does not flash when i press the 'power button'. Is it a feature of this laptop that a working battery has to be present for it to work when it is plugged in - last night it continued to work right up and until the battery had completely discharged (showing 0% of charge remaining) but would not charge with the power lead plugged in.

    My feeling is that the battery has snuffed it and that this laptop requires the battery to be in and chargeable for it to work as it takes its power from the battery whether plugged in or not. I am getting a new battery tomorrow - if that works i will let you know.

  • HippoRabbit Jun 17, 2009


    The new battery came and it worked for about 7 minutes (completely booted up in the normal way to desktop) long enough for me to see that the new battery had 28% of power available - I was just about to plug it in to charge the new battery but before i plugged in the lead the laptop shut down - now with new battery or old battery it will not fire up at all, lead plugged in or not.



    I checked the power lead on another older laptop and that laptop works with the lead.



    If it’s to do with memory or processor etc why would it work at all with the new battery that seems really odd...

  • HippoRabbit Jun 17, 2009

    Sounds terminal - voltage regulator on Motherboards issue. If it is terminal how can i get the very important info from the hard drive - could i set it up (the hard drive) as a secondary drive on my desktop or would i be better removing the hard drive from the laptop and putting it into another laptop - won't be the same make. Alternatively i could buy another HP dv6500 second hand and put the hard drive into that couldn't I?

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Will the laptop start if the battery is removed and just the charger plugged in? I would remove the battery and charger for a few minutes and try it with just the charger plugged in. Unfortunately it sounds like a hardware fault. Let me know how that goes. The other thing to try is removing the ram and then putting it back in. this will solve alot of problems like this.

Posted on Jun 16, 2009

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  • Caleb Judd Jun 16, 2009

    No It does not require a battery to be in to start.
    You can try charging it for about 6 hours then try start it but i doubt it will help. Might help to reset the laptop memory. there maybe be a pinhole on the bottom otherwise the cmos battery would need to be removed.

  • Caleb Judd Jun 17, 2009

    Its a problem with your voltage regulator circuit on the motherboard, I suspect if you charge either battery to full on another laptop then run it on yours it will work for a while, but the voltage from the power adapter is not being regulated properly. is there another laptop you can charge the batteries on to test it?


  • Caleb Judd Jun 17, 2009

    If this is the case then the laptop should only start up if the battery is in and charged and the power adapter is not connected.


  • Caleb Judd Jun 18, 2009

    You can put the hard drive in a desktop but you need an adapter for it. it is easier to buy a laptop hard drive enclosure and put it in there then plug it into a usb port. or if you can find a similar laptop that will work too.
    Have you been able to charge the battery on another laptop and test it?

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