Windows 10: Microsoft OEM System Builder Windоws 11 Pro missing Product Key

Hello,I purchased via Amazon a Microsoft OEM System Builder Windows 11 pro to build a PC. I was able to install Windows 11 pro with the CD, but the product key was not valid. Since it's past the 30 day limit I can't return it. My questions are1 Is there anyway I can get a product key if I provide info like the COA bar code?2 Is my PC safe since I used the CD to install or should I redownload Windows 11 via Microsoft site?3 Lastly, if number 1 isn't possible how do I get a Windows 11 Pro product key?Thanks

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OEM System Builder

My previous PC motherboard have been distracted and i changed it to new motherboard. I have purchased and installed the Win 10 Pro OEM System Builder in this new motherboard and i purchased motherboard and Win 10 Pro OEM System Builder different date. Is
it possible in term of licensing? if not can you provide the url for downloading whitepaper?

 

Can i install window 11 Pro OEM in window 11 Home

As I understand because an OEM licence is aimed at a system builder then it requires a clean install for Windows 11 Pro. Use the product key during the installation to ensure Pro edition is installed,

 

Product Key Question - Windows 10 Pro 64 bit OEM System Builder

Hi scott21044

Microsoft do not sell OEM licence keys to the general public, you would need to purchase that from a system builder and please be careful, a lot of the licences available on the Internet are not legitimate . . .