Question about HP Compaq nx9420 Notebook

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HP nx9420 slow on AC power, but ok on battery power

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Your adapter is defect. Had similar issues. Solved them by using a new AC adapter.

Posted on May 04, 2011

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Posted on Jan 02, 2017

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NX9420 NEW BATTERY NOT CHARGING


Is the Power Cord working? If so the new battery might be faulty.

Apr 04, 2012 | HP Compaq nx9420 Notebook

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I have a compaq nx9420,how do i reset the power on password . tanx


Enter 3 time wrong password u will get a code send me that code ill send u master password thanks

Oct 04, 2010 | HP Compaq nx9420 Notebook

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HP Compaq nx9420 reboot after start loading the Win XP


Try to go to safe mode and do a system restore. Just select a date before you encounter the problem.

Sep 16, 2010 | HP Compaq nx9420 Notebook

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BLANK SCREEN ON MY hp compaq nx9420. my laptop was working fine and then when restarted I got a blank screen. The power LED and cahrging LED both light up but screen remains blank. have changed the video...


Did it display any video at all with boot options or HP logo? Any POST test or beeps after you started the laptop?
Try removing the power ac adapter and battery. then only boot it up with just the AC adapter (no battery).
Good Luck, JAJ

Mar 30, 2010 | HP Compaq nx9420 Notebook

1 Answer

My Dell 5160 laptop slows down with the AC adapter plugged in.


try running ur laptop using the adaptor without the battery in it's place and run it with just the battery...note the difference....it may be a power surge/short issue....some times the battery is supplying power along with the adaptor to the notebook and the power circuit in there is not able to take dual power....check your power options setting in Control Panel...

also do this

clean ur system use Tuneup Utility get it from my website Dowload page
www.sureshayyar.110mb.com
use all the tools and option in that tool...the best is 1n Click Maint in there .....it fixes all ur issues...

Dec 29, 2009 | Dell Inspiron 5160 Notebook

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HP Compaq NX9420 Laptop Power supply shorted out replaced new Power supply purchased but Laptop will not power up suspect mother board shorted out also. Any suggestions


The DC Jack Will Need To Be Visibly Inspected, and Tested ..
Most Likely Need To Replace The DC Jack (the port where your AC Adapter Plug Plugs into.....

Though, if you experienced a power surge/dip or similar, You could have shorted out the motherboard....

Dec 01, 2009 | HP Computers & Internet

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