Windows 10: I lost my windows product key when i got a new computer about a year and half ago... if i...

So as i said... i purchased a new pc about a year and half ago... and my product key is now lost and i have the watermark that says "windows isn't activated activate windows etc..." and i saw that it is purchaseable through Microsoft shop... however... i do have a lot of important things installed on the pc such as steam google chrome etc... if i purchase the new product key... will i have to reinstall all of that?

:)

 

Hello, I worked for Brambles many years ago and purchased the windows disc but Ive lost the product key code.

Hello, I worked for Brambles many years ago and purchased the windows disc but Ive lost the product key code. It was on my lap top but that has since died

Please help

 

Cannot upgrade to Windows 10 - Unique Product Key situation

No... let me try again.

• Old computer is running Win7 Pro (SP1) with a Product key I have from a few years ago. The Product is activated already, but I do NOT use this computer at this point, so I didn't worry about using the Product key when moving to the new computer (see below).
  
• New computer is running Win10 Pro, with data and OS migrated from the Old computer, (same Product key as above), then Upgraded to Win10 (without getting a new Product Key).

What I am trying to do now...

• I want to upgrade the OLD computer (Win7 Pro) to Windows 10... using a new Product Key I just purchased.
• I have tried to do this internally, and also using the ISO burned to a thumb drive. But it does not want to work.
• Steps:
  • Start from USB drive.
  • Enter New Product Key (or click "I don't have one").
  • Install initiates and then tells me to restart from Windows and then open the installer again to continue.
    • At this point, I actually need to Quit the installation to restart the machine.
  • When restarted, I go to the USB drive and restart/resume the installation process.
  • I have tried to download and not to download updates, but when the installation fails, I see the message, "Something happened" and "Setup has failed to validate the product key".
  • NOTE This happens if I enter the NEW Windows 10 Product Key, or if I skip that step (which I assume means that it will use the old Windows 7 Key for the upgrade).

 

Lost Windows 10 Product Key

I purchased a physical copy of Windows 10 from Best Buy several years ago. The hard drive I installed that copy on died, and the data has become unrecoverable. In that time, I have lost the packaging I purchased the copy in, and with it the product key.
Is it possible to reclaim it, or should I purchase a new copy?