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I have a hp pavilion dv2000 that will not turn on when I press the power button the center light on the lower left corner with a f above it will flicker when pressed but that is all I get

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Posted on Sep 11, 2010


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HP Pavilion DV2000 will not start when power button pressed

Could be a bad;
1) AC adapter (Charger),
2) DC Power Jack, (Jack that the AC adapter plugs into on the laptop),
3) Power On switch, (Power Button Board),
4) Display Lid Switch Module,
5) Power MOSFETs on the motherboard,
6) Ceramic Capacitors on the motherboard.

1) AC adapter:
General example,

The plug end that plugs into the laptop has a Center Hole, and a cylindrical metal outside shell.
The center hole is the Positive connection.
The cylindrical metal shell on the outside is the Negative connection.

Multimeter function knob set to DC Voltage, the Positive (Red) probe lead goes to the Center Hole.
The Negative (Black) probe lead touches the cylindrical metal shell.

[An inexpensive multimeter can be purchased for as little as $5 to $12. Available in a multitude of stores. An auto parts store is but one example, or look on the checkout aisle racks of major discount stores.
If just a symbol, the symbol for DC Voltage is a dotted line over a solid line. More expensive multimeters have an auto detect feature, that sense when the multimeter is connected to AC voltage, or DC voltage )

You should read 18.5 Volts (DC)

While testing have an assistant gently wiggle the cable from AC adapter to laptop, and the power cord to the AC adapter. A fluctuation of the reading indicates there are broken wires.

AC adapter checks out OK?
Go to the DC Power Jack.

The DC Power Jack on the laptop may have DC_IN next to it.
It has a Center Pin, and surrounding metal shell.
Battery REMOVED, use a No.2 pencil, and see with the easer if you can move the center pin.

If so the jack needs to be replaced.

The DC Power Jack for this model series is attached to wires, that end in a small white plug.
The small white plug plugs into the motherboard.
Easier to replace, than models that have the DC Power jack soldered directly, to the motherboard.
It's a DC Power Harness, and HP labels it a Power Connector Cable.

HP 430462-001 for models that have a UMA motherboard.
HP 430461-001 for models using an Intel processor.

DC Power Jack checks out OK?
Power On switch.

In the list click on -
HP Pavilion dv2000 Notebook PC Maintenance and Service Guide

This is a PDF file. The computer you are using now has Adobe Reader on it, which uses PDF files.
After you click on the above file name, it may take up to 30 seconds before the first page comes up.

The PDF reader page numbers, and the actual manual page numbers, do not match. When I refer to a page it is the PDF file page.
Go to Page 141 - Switch Cover
Pages 142 and 144 have more details on the Power Button Board.
(Power Button Board is HP part number 417084-001)

How to test?
Multimeter set to OHM. Straight pins (2) in the socket holes of the removed, Power Button Board's cable connector.
Positive probe lead to one pin, Negative probe lead to the other straight pin.
Press the Power On button.

ANY reading indicates a good Power On switch.
No reading of course means a bad one.
(Remember; the Power On switch is a Momentary Contact Switch.
You will just get a brief reading on the multimeter, if good)

Or you can use a small flat tip Jewelers screwdriver, and TEMPORARILY touch the two contact pins on the motherboard, where the Power Button Board's cable plugs into.

Page 179 for the Display Switch Lid Module,
(HP 417087-001),Laptop,Part,417087001.aspx

Unplugging the Display Switch Lid Module from the motherboard, and pressing the Power On button, starts the laptop, you need a new lid module.

Power Button Board, (Power On switch), and Display Switch Lid Module checks OK?

Motherboard problems.
There are Power MOSFETs on the motherboard. These are located close to where the plug of the Power Connector Cable, plugs into the motherboard. (DC Power Harness)

The Power MOSFETs control;
Whether the Battery needs a full charge, or a trickle charge.
Whether the laptop is to just run off of the AC adapter, or Battery.

Look to see if any are blackened, burned, or blistered.
Information using the HP Pavilion dv6000, and Pavilion dv9000 series of Notebook PC's,

Just to show the average cost of a Fairchild Semiconductor - FDS6679 - Power MOSFET,

One dollar and one penny USD.

Looking at the second photo down on the Mayohardware blog link, look at AO4407.
(Alpha and Omega Semiconductor)

Look to the right of the Yellow circled AO4407. That small rectangular shaped object, with a dark wide band on it, is a Ceramic Capacitor.
There is one above it of the same size, one above that, and one to the right of the top one.

Average cost of them is around 62 cents to 80 cents.

Average cost of a replacement motherboard is around $40 to $60 on Ebay.

That does it for me right now. Post additional questions in a Comment.


[If you had stated it seemed the laptop came on, but had a blank screen, that is a Different problem ]

Oct 13, 2012 | Compaq Pavilion ZT3280US Notebook

1 Answer

My HP Dv6-1030us will not boot up. It turns on, but then it stays on the screen that says "HP invent, with "press the esc key for startup menu" in the lower left corner of the screen. ...

Please Reinstall the OS from F11 Recovery Manager by continuously tapping the F11 Recovery Manager Key after pressing the Power Button to turn on the notebook and select advanced options and select system recovery and run the Back up up your data first and run the recovery to fix the issue

Feb 15, 2011 | HP Pavilion dv6-1030us Notebook

1 Answer

Im on a laptop and the back light usually just flickers but the screen has gone dark and i have to use a flashlight to see the screen.

Replace the Inverter, rickeyjsmith.

An LCD screen cannot produce enough light by itself. An additional light source is needed.
A Backlight is the additional light source.

A Backlight is a CCFL.
Cold Cathode Fluorescent Lamp. (Lamp = Bulb)
Similar to Fluorescent lighting used in homes, and businesses, but on a MUCH smaller scale in physical size.
(Average size is 3 to 5 inches long, and half the diameter of a No.2 pencil)

An Inverter is used to provide power to the LCD screen, and the Backlight.

90 PERCENT of the time the Inverter is the problem.

Which is a Good thing.
The Backlight is located inside the metal frame that hold the LCD panel layers together.
Usually on one side of the LCD screen.
{Some LCD screens require Two Backlights}

Replacing a Backlight is a job for a trained repair person.
The LCD screen is a composite of layers.

A lot of times the LCD screen is replaced for Backlight replacement, because some LCD screens require this.

Backlights cost more than an Inverter, and of course an LCD screen costs much more.

This is an example of an Inverter for an HP pavilion dv2000 series Notebook PC,

The above is ONLY an example.
An Inverter MUST be matched to THE LCD screen.

Stating Pavilion dv2000 is only stating the series.
The EXACT Product Number is located on the bottom of the laptop in a white Service Tag.
P/N = Product Number

Also, there is an HP part number on the Inverter.
Match the HP part number to the listing for the Inverter you are going to purchase.

A reputable seller will list THE HP part number so that the buyer will purchase THE correct Inverter.

How to replace an Inverter in an HP Pavilion dv2000 series Notebook PC;

1) Service Manual

I'm going to use the HP pavilion dv2000 CTO Notebook PC as an example.
The Service Manual is the same for All of the Pavilion dv2000 series of Notebook PC's,

On this page click on the file name >
HP Pavilion dv2000 Notebook PC Maintenance and Service Guide.

After you click on the above link it may take up to 30 seconds, or more, to see the first page.
In the meantime you will be viewing a blank white page.
The PDF file is downloading in the background.

In the Bookmarks menu to the left, click on the + sign to the left of >
Maintenance and Service Guide.

Click on the + sign next to > Removal and Replacement Preliminaries
Read up on Anti-Static Precautions

Now go back, and click on the + sign next to >
Removal and Replacement Procedures.

Scroll the sidebar down, and click on > 5.12 Display Assembly

Direct information on replacing the Inverter is on Page 152.
(Page Number Box at the top of the PDF file, to the right of the blue Down Arrow)

I use a computer pick to ease up on one side of the rubber Screw Covers. You may have a similar device you can use.
If you are careful with the rubber Screw Covers, you can reuse them.
There is a contact cement on the covers.

Lay them down glue side up on a piece of paper.
(They do like to stick to the computer pick, and your fingers, however. Giving you a 'heads-up'.
Try to keep the glue side from picking up debris, however)

If you need guidance, no matter what it is concerning this procedure, please post in a Comment.

One more thing that pertains to the HP pavilion dv2000, dv6000, and dv9000 series of Notebook PC's, that I think you should be made aware of,


Dec 05, 2010 | HP Pavilion dv2000t Notebook

2 Answers

Hp pavilion dv2000 lights switch on but boot or


Thank you for your query

Please try the folowing

1) Remove ALL wires and then press and hold the power button in for approx 20 seconds

2) Plug everything back in and then rerty

This may sort the issue out however from what you are descrbing, if there is no boot or display it is highly likely the motherboard and/or the CPU is faulty

I would recommend that you book the PC into a reputable PC repair shop if the above does not work

If this has been useful please leave postive feedback/vote/testimonial - Thank You Again

Feb 15, 2010 | HP 417035-001 - HP Pavilion dv2000 Series...

2 Answers

Black screen on HP Pavilon dv2000. It does have the power from both ac adapter and battery as I can see all the lights on keyboard. I can hear the fan when press power button. Does not make any sound when...

Unplug the computer from the wall, hold the power button in for 1 minute. This will reset somehow the bios and remove any electricity left inside.If still doesnt work take a look to the cpu and heatsink

Jan 18, 2010 | HP Pavilion dv2000 Series Laptop Full...

1 Answer

Screen wont turn on

remove the battery and the power from the laptop.....then press and hold down the power button for 20 seconds ...... attach the AC power only and turn on the laptop this should turn on the system.
This drains the capacitors on the system (safety feature of laptops ... quite common)

If this does not work remove the Ram and reseat it ... something has either come loose or the backlight on the LCD has gone bad.

Oct 06, 2009 | HP Pavilion dv2000t 14.1" Notebook Laptop...

1 Answer

I have a hp dv2000 thats not turning on the power light comes on

Disconnect the ac adaptor and battery and then press and hold down the power button for 30 sec, and the relese it and connect the ac adaptor and battery and try 2 turn on the NB

Sep 14, 2009 | HP Pavilion dv2000t Notebook

2 Answers

Hi I have an HP Pavilion dv2000 and out of nowhere it won't turn on... If I touch the button power it will show the HP logo, and then a black screen with a white line (across) on the top (left) just...

I would say to try resetting the laptop. You have to first remove the battery then the power. Finally hold the power button down for 30 seconds. Try it again. If that doesn't work let me know if you just added anything to it.

Aug 11, 2009 | HP Pavilion dv2000 Series Laptop Full...

1 Answer

My HP Pavilion Entertainment PC will not turn on!


Jun 07, 2009 | Microsoft HP Pavilion DV6276US Notebook PC

4 Answers

Hp pavilion dv2000 notebook will not boot up

i m in Hong Kong. The stupid HP repair center charged US 90 just for inspection!!!!! They they said the whole motherboard had to be replaced, thts additional US 630 dollars, the thing is just 1.5 yr old. They also said i don get to keep the broken mother board after replacement. This is simply irresponsible, unethical, sleazy and UNJUST!!

Thanks. right now the computer is fixed for US70. when i hv time, i'll open it up and see if i can figure it out how it was fixed. The shop suggested tht the computer wont last too long. This is such bad quality for HP... Sorry, i hv to do the following for other victims to find this easily:
(can some creative netizen bring this to the public light to pressure HP to do the ethical things??)

bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.
bad quality HP. hong kong HP pavilion dv2000 series manufacture problem. HP unethical.

Sep 21, 2008 | Computers & Internet

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