Question about HP Compaq nc6220 Notebook

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HP Compaq NC6220 No Power

Greetings I have a HP Compaq NC6220. For some reason it doesn't want to start up. When I plug in the AC adapter with the Battery attached, the amber light flashes and them switches off. I tried removing the Battery and switch on the laptop, but it does exactly the same. I even tried another Battery, but still does exactly the same thing. And the laptop makes a weird ticking sound. Any idea what the problem could be?

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Computer does not boot up The problem maybe the RAM, it is faulty or just needs reseating to make proper electrical contact.
Reseat the RAM and then boot up your laptop. If it still does not boot up then remove the RAM module/s and take them to your friendly computer repair shop and get them to test the RAM for you. Just like you sometimes need a mechanic to repair your car, sometimes you do need a technician to diagnose and identify the fault or faults on your computer. Not only does a good service technican have the experience to deal with this type of problem, they also have the equipment that allows them to look at things the average computer user can't see, and he has a collection of replacement parts that can be used to quickly test individual components on your computer.

Posted on Jan 07, 2013

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Posted on Jan 02, 2017

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Hp compaq 6737s not powering up

Here below are possible causes and troubleshooting steps of laptop that can't power on, hope it may help:
Possible causes:

1. AC adapter failure.
2. Power jack failure.
3. Motherboard failure.

Possible troubleshooting steps and repair solutions:
1. Test the AC adapter with a digital multimeter. It's possible that you have a failed AC adapter. If you don't have a multimeter, test your laptop with another known good AC adapter.

2.It's possible that power jack (socket where you plug the AC adapter) is broken. Remove the motherboard and take a closer look at the power jack. In some cases you can fix the jack by resoldering it on the motherboard. In other cases you have to replace the jack with a new one. Using a multimeter, test if the power goes to the motherboard through the jack.

3. If replacing the AC power adapter and jack on the motherboard doesn't help, most likely you have a bad motherboard. Replace the motherboard.

Nov 05, 2012 | Computers & Internet

1 Answer

Please, Where I find a HP G42-210BR Motherboard electronic schemmatics? My note not star the charge pump to battery charge. Thanks and regards.

You have already diagnosed the;

A) AC adapter (Charger)?

1) You have taken a multimeter, set the Function knob to DC Voltage, and tested the AC adapter to see if it is putting out 18.5 Volts? (DC)

2) You had an assistant gently wiggle the power cord to the charger, AND the power cable from the charger to the laptop?

Diagnosed to see if there is an intermittent reading due to broken wires?

B) Checked out the DC Power Jack that the AC adapter plugs into?

{ It's a DC Power Harness. The jack has a cable with a connector on the end }

Jack is in good condition? Center Pin doesn't move, outer metal shell doesn't move?
DC Power jack solder connections are good, not cracked?

Then you are looking for the power sensor chipset. It is a power MOSFET,

This is one that is used in a LOT of laptops,

Service Manual,

The HP G42-210(?)BR Notebook PC is part of the HP G42 series of Notebook PC's.

In the list click on the file name -

Compaq Presario CQ42 and HP G42 Notebook PC - Maintenance and Service Guide.

This is a PDF file. It may take up to 30 seconds before the first page comes up.


Feb 06, 2012 | Computers & Internet

1 Answer

My laptop won't turn on, and the charger doesn't seem to be doing anything. even when plugged in, it won't start. ideas?

You've to replace the ac adapter, if it's brick doesn't get warm or LED does not glow on Power Jack on the laptop. offcourse, check with the wall different sockets

power jack can also be loose. so jiggle the cable to find out.

if notebook is getting power, you can remove the battery, ac adapter, hold and keeep pressing poer button for a minute, then, turn it on.

finally, you can take out hdd and ram, put them back again and turn on the laptop. hope it will help

Sep 17, 2011 | Compaq Presario CQ60-220US PC Laptop

1 Answer

Wont turn on

try the ff steps in order

- unplug ac adapter
- remove battery
- hold down power button for 10 secs without any power source
- this is called power drain or power cycle
- plugged in ac adapter /charge & try turning it on

if it turns on now, u can re-attach the battery
- if it doesnt turn on still, call HP for support, you might need to send it in for repairs

Sep 08, 2010 | HP Compaq nc6220 Notebook

3 Answers

HP Compaq nc6220 Laptop is dead. no lights,

Is this the same if the charger is also plugged in??

Remove battery and retry with charger plugged in.

If same battery charger is faulty.

Dec 22, 2009 | Compaq Hewlett Packard nc6220 PC Notebook

1 Answer


do a power drain 
- shut down the comp, unplug the adaptor and unplug the battery
press and hold the power button without any power connected to the comp
- plug the battery and plug the ac adaptor and turn on the comp

Oct 04, 2009 | HP Compaq nc6220 Notebook

1 Answer

NC 6220 will not power up, power source good?

Take out the battery and just use the ac adapter and see if you get power. If you dont then if you can try to use another known working ac adapter.

If that still doesn't do it then take out the hard drive and the dvd drive.

If you still can't get power at this point then the motherboard is bad.

Aug 16, 2009 | HP Compaq nc6220 Notebook

1 Answer

My Compaq nc6220 only starts up when the ac adaptor is plugged in. I think the battery needs to be replaced. does this sound right ?

To check if the battery is charging go to Control Panel - Power Options - Power meter. If it shows unknown or zero charge then the battery is faulty or worn out. Rechargeable batteries have only a finite amount of charge and discharge cycles and over a couple of years use they lose their full amp hour charge capacity.

Jun 10, 2009 | HP Compaq nc6220 Notebook

1 Answer

Need ac adapter for Compaq projector

Hi Tech Lady , greetings !!

Your projector has a "Multimedia Adapter" .

You can purchase the adapter from or directly from HP.

Trademoon is a discount supplier of new and refurbished Compaq and HP parts.You can call them at 97
2-682-5000 or log on to

Or you can also call HP/Compaq at 1-800-474-6836 and say "SPAREs"

The specifications of your adapter is :

Power Consumption 5 Watts (standby)/185 Watts (full power)
Power supply 90V to 255V (auto switching): warm restrike after 45 seconds

Goodluck :)

Jun 04, 2008 | Compaq AC Adapter Projector Lamp

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