My dv6120us laptop boots, but the fan (which works in another computer) does not come on...

I have a dv6120us laptop that I am having fan troubles with. I don't have an OS loaded but the CoA is for XP media center edition. The computer boots up and can access the bios if necessary, but the CPU cooling fan never kicks on. I have pulled it out and cleaned it, but that didn't fix the problem. It doesn't seem to matter how long the computer runs, it does not shut down either. I have pulled the fan out and tried it with a different motherboard and the fan came on like it was supposed to, so I know the fan itself is not faulty. I have also tried a different fan (same, correct part#) with this motherboard, but the second one didn't work either. I don't know if I'm dealing with a problem getting power to the fan or whether it is an automatic shut down problem, maybe both. I'm guessing that I have issues with the motherboard, and I feel relatively comfortable troubleshooting and attempting repairs on the motherboard, but I am at a loss for where to look for my problem. Is there anyone that can help me troubleshoot the motherboard and try to get this fan working? The motherboard HP part# is 434723-001.

I think I have found my problem... I know how to fix this, but I do not know how to identify the specs for this part or where I can find a replacement. I would hate to replace the whole motherboard for an inexpensive fix like this.

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HP Envy 15" TouchScreen Power LED shows up, but fans not running and screen does not come on

Hello there!
I am a 1A Software Engineering student at University of Waterloo, and I am running into a very serious problem with my HP Envy 15" TouchSmart laptop running Windows 8.1. This is a problem that just started today, and I would rather get some support from here first before I go see the technical support office sometime tomorrow; it has to do with the screen and fans where the Power LED lights up white, just as when the laptop is running properly.
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This question was solved.
View Solution.

Hello @GregPDesWHP,
Welcome to the HP Forums, I hope you enjoy your experience! To help you get the most out of the HP Forums I would like to direct your attention to the HP Forums Guide First Time Here? Learn How to Post and More.
I have read your post on how your notebook computer is not powering on, and I would be happy to assist you in this matter!
In order to regain functionality of your computer once again, I recommend following the steps in this document on Computer does not start (Windows 8). If the issue continues after exhausting all of the steps in this document, I recommend contacting our technical support at 800-474-6836. If you live outside the US/Canada Region, please click the link below to get the support number for your region.
http://www8.hp.com/us/en/contact-hp/ww-phone-assist.html
I hope this helps!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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My dv6120us laptop boots, but the fan (which works in another computer) does not come on...

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