Question about HP Pavilion dv7-1240us Notebook

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I have HP Pavilion dv7-1240us laptop..since some days it is not power on..on respons..i have allready change battery.but still same problem..please give me some solution with picture..i m waiting for your respons....

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  • HP Master
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Whenyou connect the power adapter into the laptop, does the power LED lightup? If not then - The battery adapter or the adapter's power lead or the laptop's powersocket could be faulty. Check power adapter's DCplug that connects into the laptop power socket with a multi-meter, the voltageshould be slightly higher than the voltage that is printed on the label on thebottom of the adapter. If the voltage is zero or way below the voltage that isprinted on the label then the power adapter is faulty and needs to be replaced. If the adapter is OK thenconnect it to the laptop and power it up, then look at the power/batterycharging LED light and wriggle the power plug in the laptop's powersocket. If the power/battery LED light flashes and in a certain position thisLED light stays firm, then the power socket is either faulty or it has a drysolder joint where it is connected to the motherboard. This can be repaired but itrequires the laptop to be completely dismantled to get at this power socket andrepair. If you cannot DIY then I suggest you get a quote first.

Posted on May 19, 2011

Testimonial: "sir i have allready cheek this.my charger is ok.dear sir i think that its Motherboard power section problem.plz give me solution for power problme "

  • mohsinreja May 21, 2011

    Dear sir i have allready check your all instruction..but still same problme..for your kind information when i connect the charger no respons or no led lightup.. sir i think that its motherboard power section problem..please give me solution for power problem...sir which section is power section? i m waiting for your respons..take care of your self

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I need hp pavilion dv7 1240us motherboard power problem solution..i have allready check dc jack,battery,power cord..and i soldring dc jack,battery jack..please some body help me... plz give me this...


I am not exactly sure what is the problem. Are you certain it is a power problem with the mother board? It could also be damaged or non functional.
Here's a troubleshooting guide from HP that might help you.
and the product's manual:

May 22, 2011 | HP Pavilion dv7-1240us Notebook

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on Apr 01, 2010 | Computers & Internet

1 Answer

GOOD DAY TO YOU, I HAVE A PROBLEM WITH MY HP LAPTOP, USING A PLUGGED IN POWER CORD COULD'NT CHARGE MY BATTERY, I REMOVED THE BATTERY AND NO POWER COMING IN THE SYSTEM, WHAT COULD BE THE PROBLEM


Hi there, if charged battery on the power of laptop is fine and not have any problem with your laptop. Your power cord may damaged. Please visit a electronis repair center and test the power code. 90 % chance of adapter damaged.
Thanks.

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HP G6000 laptop wont start


Extract your battery from your laptop for 12 min, then start your computer using your power cable (don't use your battery), if not try pressing F2 rapidly when opening, after you open your operating system try changing your graphics card drivers.

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1) plz go to power options from control pannel and change the power options as never never

2) we can do one more thing,we can do a Bios update

everything tis going to fine

ITS Works

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Power drain would be a better solution in this case.
1.first shut down the comp
2.unplug the charger
3. remove the battery
and after press and hold the power button for 60 seconds without any charger and the battery.After the 60 seconds replug the battery and the charger and turn the computer .

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The troubleshooting you have done seems to be fine. It does not seem to be a problem with the power supply,cord or battery.Did you try a hard reset. If there is a reset button on the bottom of your laptop, you might want to try pressing that with laptop plugged in, not plugged in, with battery, without battery and different combinations thereof.
If this does not work or you don't have a reset button read on.

Before assuming it's the motherboard, there is one other possibility. There is a part called a PCA switch. It is possible this switch has gone bad or a plug might have come loose.

If you are comfortable with doing your own work, you can obtain a repair manual for your laptop online. Within this manual, it should explain what is involved in replacing this part. It is really not too complicated.

It does not sound like a hard drive problem simply because it doesn't seem to be getting power to any other part of the laptop.

You can try these steps.

Regards

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HP Laptop Battery Problem


I had a similar problems and I had my batter replace by Hp free of charge. Most like your batter could be damage internally or it could be a motherboard problem.

I suggest you visit this HP link http://h20239.www2.hp.com/techcenter/battery/Battery_max.htm

Jul 03, 2009 | HP Pavilion dv6000z Notebook

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