Windows 10: Can Microsoft give me Windows 11 Pro product key to replace my original key which came with...

Last month, I got hit with a virus, I brought my computer to a service center. They installed Windows 11 home version. My original Windows 11 Pro. The service center did not save Windows 11 Pro product key. I installed Windows 11 but don't have product key.Questions:1. Can I get a replacement key from Microsoft?2. Is there a way to get around s-mode to install other non-microsoft application?

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Windows Product Key

A friend of mine has an all-in-one that came with Windows 8 pre-installed. He erased the original OS thinking he could install another version of Windows 8. One thing he encountered, that he didn't expect, the BIOS/UEFI has a password. So, basically he is locked out from installing another OS. His BIOS has the product key nestled inside. Is it possible to find out which version the product key belong to?

 

windows 10 key

Thanks but I don't want to do any decrypting. I want to download a Win 10 ISO from Microsoft and install it using my Win 8 key. No other steps required. Is that possible?

 

Vista Product Key Question. (Legal)

http://www.widescreengamingforum.com/wiki/index.php/Master_Games_List_-_DA good while ago, i purchased directly from Microsoft a "Vista replacement disk" that has SP1 intergrated. I had to call them to order it. The DVD looks like this:





This replacement DVD came with a new product key wich has NOT been used (activated). I even asked M$ why did they gave me a second key. They said that the replacement includes a new key. Ok...

Since i always use my original key that came with my retail box, is it safe for me to sell the above key?