I want to upgrade my HP pavillion a1220n pentium 4 by change motherboard.Can you show me the way?

The Pavillion A6120N Desktop PC has a P5LP-LE (Leonite) motherboard, meaning that any of the following will work for you:

Socket type: 775
Motherboard supports the following processor upgrades:

• Core 2 Duo E6x00
• Core 2 Duo E4x00
• Pentium D 9x0 Dual Core
• Pentium D 8xx Dual Core
• Pentium 4 6x1 series
• Celeron D 3xx series
  
  

Not worth the money

Depends on the socket type.. Socket 423 and 478 do not support core duo or quad core processor types. However, if you have LGA 775 (aka socket T) your motherboard will support the following:
Intel Pentium 4 (2.60 - 3.80 GHz)
Intel Celeron D (2.53 - 3.60 GHz )
Intel Pentium 4 Extreme Edition (3.20 - 3.73 GHz)
Intel Pentium D (2.66 - 3.60 GHz)
Pentium Extreme Edition (3.20 - 3.73 GHz)
Pentium Dual-Core (1.40 - 3.33 GHz)
Intel Core 2 Duo (1.60 - 3.33 GHz)
Intel Core 2 Extreme (2.66 - 3.20 GHz)
Intel Core 2 Quad (2.33 - 3.00 GHz)
Intel Xeon (1.86-3.40 GHz)
Intel Celeron (1.60 - 2.40 GHz)

Hi,
The recovery cds are available on the link below
http://www.hprecoverycd.com/

Thanks
Proton

Possibly the video card or settings. If you recieve nothing after turning the monitor on, it is most likely the video card.

You should be able to upgrade the CPU, since it seems that the DV1000's motherboard uses a socket CPU design. But, obviously, HP would rather have you choose the CPU that you want from the beginning and stick with it.
The first thing to do is to check HP website to see what other configurations were/are sold for your model. If they sell it with faster CPUs then you can upgrade to one of them...

PLEASE NOTE:
In order for a particular processor to be compatible with a particular laptop:
(1) the processor must be physically compatible with the laptop socket, in your case I thing you have a Soket 479 processor
(2) the laptop chipset must support the processor.
(3) the chipset front side bus speed must match the processor front side bus speed, in your case 400Mhz.
(4) the laptop BIOS must support the processor.

So I listed here processors with FSB at 400Mhz, I gues that DV1000 as a 855GM Motherboard that supports only 400Mhz with Socket 479

Pentium M

Banias
Pentium M 1.3 1300 1024 400
Pentium M 1.4 1400 1024 400
Pentium M 1.5 1500 1024 400
Pentium M 1.6 1600 1024 400
Pentium M 1.7 1700 1024 400

Dothan
Pentium M 710 1400 2048 400
Pentium M 715 1500 2048 400
Pentium M 725 1600 2048 400
Pentium M 735 1700 2048 400
Pentium M 745 1800 2048 400
Pentium M 755 2000 2048 400
Pentium M 765 2100 2048 400

Celeron M

Banias-512
Celeron M 310 1200 512 400
Celeron M 320 1300 512 400
Celeron M 330 1400 512 400
Celeron M 340 1500 512 400

Dothan-512
Celeron 205 1200 512 400

Dothan-1024
Celeron M 350 1300 1024 400
Celeron M 360 1400 1024 400
Celeron M 370 1500 1024 400
Celeron M 380 1600 1024 400
Celeron M 390 1700 1024 400

Best Regards

Local independant repair shop is your best bet!

If you've been told the motherboard needs replacing it could be true, especially in older laptops. Thinks get hot, brittle, and then a circuit gets broken. I recently had new motherboards installed in two Dell Inspiron 8200 computers. I found the boards on ebay for $70 ea. and had a local shop install them for another $70 ea.

Keep in mind Ram and video cards are common failures too.

There are quite a few diagnostic utilites out there to check for yourself before replacing the motherboards. If you want to spend the time look for ones from your computers manufacturer.
Let me know if this helps you

There is no wiring diagram available with the exception of the engineers and that info is listed as classified within HP Boise Head office

Most companies don't offer driver support for XP anymore, it's 2017, time to upgrade to atleast Windows 7 now.