DV7-2185dx usually will not be market - indicator of no. - East power codes

Hey everybody!

I have a DV7-2815DX, p/n NV023UA #ABA, and it will not turn on 99% of the time. Here is a description of the problem:

  • Power cord is plugged and the illuminated by the plug.
  • Battery is in, but no charge indicator. SOMETIMES (about 10% of the time) the charging light blinks constantly.
  • I hit the power button and nothing happens. The fans start, no beep codes, no flashing of the LED.
  • Same results when the battery is removed.
  • Same results when the battery is installed and the power supply cord is unplugged.

Once from time to time, the system tries to start. Fans of start and all lights light up (slider in the volume indicator wifi, etc), but then it turns off after about one second and continues the original problem.

Here are the steps I've taken so far:

  • Tried the hard reset steps described here: http://support.hp.com/us-en/document/c01443371
  • I swapped the RAM. Tried a stick into the two slots, tried the other stick in both slots, tried both sticks in different locations. I have tried different RAM sticks.
  • I tried another from an another HP Pavilion laptop AC adapter.
  • As already said, I have tried with and without the battery installed.
  • I completely disassembled the laptop down to the motherboard and clean the radiator. I also have the form of basic thermal paste to the processor and GPU. I also did all the connections have been fixed. One was suspicious:

    It is located inside the laptop power cable style: http://www.itpartsource.com/searchquick-submit.sc?keywords=538085-001+. The wires in the connector 2 pins were loose, the connection itself was not a coward but the actual wires inside the connector. I tried to reinstall the best I could, but I am not convinced that I made a difference.

  • I also replaced the CMOS battery. I noticed that the box located below the battery inside the small box in which it is located, what apperaed to be rust stains.

I could able to start completely twice, once before the dismantling and once after. Whenever he gave me an error 'checksum', on the CMOS, and it gives me the ability to load the default values (F1) or enter the settings (F10) system. I chose a different each time and was able to get to the windows startup and the laptop worked like a charm. After closing down, however, originally continued problem.

So, what do you think? Is that what cable power (I already ordered a new one, just to be sure)? What is the connection of the CMOS battery? What is the CPU or GPU? Or do I need a new motherboard?

I also had a supplementary question. Anyone know where I can get a new CPU, if I had to? If I buy a new motherboard, you know if it comes with the Integrated GPU already?

Thanks for posting my lengthy post! I look forward to your responses!

Hello @PromisedLand,

I see that you have a problem with your laptop from consecutively. I will try to help you with this.

Please provide all the details you have to what has already been tried. It helps a lot in the direction on how to proceed. Of what you have tried, I'm also leaning towards the issue being to the system board.

* be aware that changing the motherboard yourself can be very difficult to change the id of service without the HP software to do. You can contact the technical support for this part.

In Service and Maintenance Guide, you can find spare parts and the answers to your question on the system board. Page 79 has the cards of replacement system, page 93, processors. They are not part of the Council, but the graphics are.

You can check/contact the store part HP to order these parts.

I hope you're able to help.
Thanks for posting on the HP Forums.

Tags: Notebooks

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