Windows 10: How to retrieve a pre-installed windows product license

Hey,I had an Asus laptop which is broken now because I split some water on keyboard. I cannot turn it on to retrieve the license key so that I can use it on a new Desktop which I am going to build. Are there any ways I can retrieve the license key? I lost the packaging ages ago, but I do have receipts and the broken PC available to check..Thanks,Chris

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how to retrieve my previous windows version product key

My laptop currently running windows pro, will it possible to get my licensed windows 10 Home version which was came pre-installed to my laptop with this oem key after clean install.

if yes suggest me step by step.

Thanks

 

windows xp installation and dual core am

could someone please list the steps they follow to install windows with a dual core processor and windows xp service pack to. I'm reletively new to amd dual core and i feel i'm missing a step. All help will be appreciated. thanx

 

Newly installed hard drive and I need to retrieve my pre-installed Windows back

I have a lenovo yoga 500 that was bought in 2015 and now 2019 I installed a new hard drive because of a previous original hard drive failure that has the pre-installed softwares. When I bought this laptop it already has Windows 8.1 pre-installed. When
the Windows 10 came and MS asked me if I want to upgrade from Windows 8 I did it at once. My problem now is how can i retrieve the product key of my pre-installed Windows 8.1? Is it necessary that I install Windows 8.1 first to enter the product key just
in case I retrieved the key or should I install Windows 10 at once. I tried to look at all the reading paraphernalias like manuals and warranty on my lenovo package but there is no product key. I wish you can help me. Thank you so much!