Change Bios configuration

If you want to replicate the information from the old system into the new one, then it will be necessary to reinstall the old motherboard, bring it up one last time, and extract that information from the BIOS setup pages.  This probably will not prevent Windows wanting to reauthorize when it starts up on the replacement motherboard, though; each laptop BIOS has an identifier unique to that motherboard.

If you don't want to replicate the information from the old system into the new one then you should be able to ignore setting those fields, save the setup, and exit to boot Windows for the first time on the new motherboard.

best contact HP support for exact steps :  https://support.hp.com/us-en/document/c02693833

If you go ti http://partsurfer.hp.com/ and enter your machine serial number you can get all that information, or post the serial number label and I'll look it up for you.

As Dr. Klahn says you can actually enter anything you like and it will still work, it only really matters if you  phone HP for support and they ask you to tell them the machine serial number and you look it up in BIOS and it says FOOBAR because that's what you typed when prompted.

System board product number is actually printed on it somewhere, it will be 6 digits followed by -001 most likely.

Try this link and check if your case is similar with this one:
https://support.hp.com/hr-en/document/c01443496

hp assistant with detect the model, hardware and applicable drivers.