My laptop's motherboard is busted. Where can I get a replacment?

[DoronBH]

My warranty expired already.
Is there a place I can order a spare?

[BeemerBiker]

Go here and put in your serial number and look for "PC Board"

https://partsurfer.hp.com/partsurfer

For example (just guessing) 

N15766-601

MOTHERBOARD DSCGTX 1650 4GB i5-12450H WINDOWS

Verify the video board and cpu match what you have in the event more than one motherboard is listed

The HP part number might be N15766-601

Look in eBay and AliExpress or just google the part number

https://www.google.com/search?q=hp+N15766-601+motherboard

If you get a new, unused motherboard it may need to be programmed with the correct features.  if you get a used one it is programmed.   You should contact both the vendor and HP to find if it needs to be programmed or not.

hp worldwide contact https://www.hp.com/us-en/contact-hp/ww-contact-us.html
hp service online https://support.hp.com/us-en/contact-hp

You might be better off getting a used laptop that is identical so you could use spare parts should a problem occur in the future.

What was the original problem with the system?

[DoronBH]

How can you tell the serial number?

For instance, I googled N15766-601 and I did not see the number N15766-601 on such a motherboard. 

I did see DAG3PMB18BO typed on the motherboard, so I'm guessing the part number is not the same as the serial printed on the actual motherboard.

[DoronBH]

How can you tell the serial number?

For instance, I googled N15766-601 and I did not see the number N15766-601 on such a motherboard. 

I did see DAG3PMB18BO typed on the motherboard, so I'm guessing the part number is not the same as the serial printed on the actual motherboard.