Question about HP Compaq nc4200 Notebook

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My compaq nc4200 HP is plugged in but wont go on

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1. Take the battery out of the laptop & try to turn on the laptop using power adapter only. If the computer turns on, then the battery is defective & needs to be replaced.
2. Make sure the power adapter is not defective. Test the output voltage of the power adapter using a voltmeter. Compare the voltmeter reading to the nominal value written on the adapter or the laptop.
3. Make sure the DC jack is not loose or broken. A loose DC jack will need to be re-soldered. A broken one will need to be replaced.
4. If you have another processor which is compatible with your laptop's model, try swapping processors & test to see if the laptop will work.
5. The power button could be bad.
6. The motherboard could be defective & needs to be replaced.

Posted on Sep 29, 2010


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Posted on Jan 02, 2017


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Download the manual

The Service Manual Can Be Obtained Here
A lot Of Random Manual For Your Hp Can Be Found Here
The Specs Are Available Here
And The User Guide Or Manual Is Located Here

The User Guide Isn't Very Helpful So If You Have An Answer Your Specifically Looking For Please Feel Free To Post It Here.
Michael Scott

Feb 06, 2009 | HP Compaq nc4200 Notebook

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