20 Most Recent Compaq Pavilion ZT3280US Notebook Questions & Answers

wow, a song where? we can not guess where.
songs have today, infinite sources.
so tell where?

Compaq Pavilion... | Answered on Feb 18, 2018

there is no limit on max. hdd.
sorry, only the format limits that.

why spend hard cash on old IRON./ its now retired, no support
why not go to Goodwill and find a W7 or newer LT.
for like $20 and have some value in your hands.
old dmm sticks are hard to find, that are good.
many of the old RAM are not made now. sorry

if only one slot is found then there is only one slot
the books are obsolete and very hard to find
i tried to buy parts for this and found almost none.
why do this.?>?? sorry but why?

page 5-10 in your book shows 1 stick
why think there is more>? this old.


btw my modern LT has 4 sticks 2 on top 2 on bottom
but not yours.

go to the used PC store
look on the bottoms of bottoms off all LT
see that W7 or newer MS, COA label buy that.
and WIN !

Compaq Pavilion... | Answered on Jul 12, 2017

what does RESET mean. tell the helper that first.
my guess is you mean BOOT?

first take out the relic battery (i bet its old and shorted)
does, BIOS work now, hit the BIOS key? yes/no
does it boot to the hDD, now?

To installed W7, Who's, Microsofts or HPs' latter works other dont.
using CD driver to install w7, that it?
does the CD boot and run and ask all the normal questions?
it takes a good HDD to installed W7.
for a fact.

I test the PC with a Linux live disk or Windows PE live disk
first to see if all is good, then run HDD tests from there.
using HDD test software, (free from hundreds of sources) ask

then install w7, when sure.
battery is out.
power pack ok.
and HDD ok.
only then can it work. (if luckly , )

Compaq Pavilion... | Answered on Jun 28, 2017

Check that brightness is not turned right down, you do this using the function keys, Fn and one of the Fkeys the top line of your keyboard. Another thing to check is that external monitor has not been aactivated. This can be corrected by using the function keys as well.

Compaq Pavilion... | Answered on Sep 14, 2013

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)


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 ]

Compaq Pavilion... | Answered on Oct 13, 2012

OK, windows vista home edition. So, what about it? It's a terrible product if you ask me.

Compaq Pavilion... | Answered on Jun 01, 2012

You can download the WEBcam and device drivers from the Compaq/HP WEBsupport/download page. Make sure you select your model laptop and the Windowsdrivers you require and install them. Click on this link to download thedrivers: -http://welcome.hp.com/country/au/en/cs/support.html

Compaq Pavilion... | Answered on Jun 01, 2012

www.compaq.com and look up the users manual should help you out. don't be afraid to push things you aren't gonna break it the more you play with the pc the better you will become. i also suggest getting a book on how to use laptops maybe that will help too

Compaq Pavilion... | Answered on May 06, 2011

Click start > select control panel> select hardware and sound> select mouse> your mouse and touchpad software window will open (example: Synaptics is mine) select touchpad tab were you can turn it back on or reset to default as well as adjustments to your devices.


Compaq Pavilion... | Answered on Jan 14, 2011

I think you will need to do a system recovery.The symptoms you tell looks like a HDD error because the system does not read the HD.

Go to this LINK and choose the best call for your problem.I choose system recovery and some long procedures had to be done to recver your PC.

Compaq Pavilion... | Answered on Oct 26, 2010

If you are refering to Service Manual:


Compaq Pavilion... | Answered on Jul 27, 2010

Hi. Webcam is automatically turned on by default. You can enable/disable the webcam by pressing the Fn key + Esc key.

Compaq Pavilion... | Answered on Jul 25, 2010

You could use Google Maps to get direction or Mapquest.



Compaq Pavilion... | Answered on Jul 08, 2010

  • Decide what kind of reboot you are going to do. A soft reboot is performed the way you are “supposed” to do it. For a soft Windows reboot, go to the Start menu and select “Shut Down” or “Restart.” The computer will then shut itself down. Clicking “Restart” makes it boot up without further intervention from you.
  • Step 2 Perform a hard reboot by pushing the computer’s power button and holding it until the computer shuts down. Wait 45 seconds and restart the computer by pushing the power button again. You may have to start up in safe mode, but that also allows you the chance to restart properly or work on programs in a safer way. This method may cause you to lose data or mess up the operation of some of your programs. But it may be the only option if your computer's hard drive is frozen.
  • Step 3 Power down all of the computer's components. Shut off all of the peripherals you have attached to your computer, and disconnect the cables. Then, plug all of the peripherals back in, and restart your computer. This can often solve problems with your hard drive.
  • Step 4 Purchase and install a program such as Drive Reboot Restore PC 6.0 that streamlines the hard drive reboot process. These applications help prevent the problems that can develop after repeated computer use. They also ensure that your hard drive maintains the configuration you want each time you turn it on.
  • Step 5 Investigate what the problem may be with your hard drive. Because of its delicate nature, your hard drive can very easily be thrown off.

  • Compaq Pavilion... | Answered on Jul 04, 2010

    if there is no light to ur panel the main problem is of ur cable in ur laptop
    there are two connetor in compaq one for power on/off switch other for ur touch sensor if its have light now u have to replace ur touch pannel
    other wise remove the pannel nd reconnect the cable

    Compaq Pavilion... | Answered on Jun 29, 2010

    see if this helps http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00045244&tmp_task=useCategory&lc=en&dlc=en&cc=us&lang=en&product=408455
    if you cannot find the switch have a look at the F keys for a key with the wireless symbol shown in that link and use the FN key + the F key with that symbol
    To check that you have a wireless adapter and that it is working OK Press the Windows key (bottom left of the keyboard} and at the same time press the R key, now in the search box that appears - type devmgmt.msc Click on the + sign next to network adapters - you are looking for an item labeled Wireless or 802.11 make sure no yellow ? or ! in device manager anywhere -

    Compaq Pavilion... | Answered on Apr 23, 2010

    Operative system wont boot?

    You need to set your bios to your primary boot device is that cd/dvd rom .

    You can also do that by pressing F12 on your keyboard and selecting your CD/DVD drive.

    Compaq Pavilion... | Answered on Apr 16, 2010

    Just uninstall the touchpad driver in "Programs and Features" under "Control Panel"

    That's it.

    Compaq Pavilion... | Answered on Mar 12, 2010

    There is no fuse inside.If this is idle for a few years , might be there is some dust in switch so you will have to clean it once and also try with exchanging the power cords.


    Compaq Pavilion... | Answered on Jan 05, 2010

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