Windows 10: Win 11 pro upgrade key from Win 10 missing after BSOD, how to get?

Hello, I upgraded to win 11 from 10. I got the pro version. However a BSOD has crashed my old computer. I cannot log into windows anymore.I have to reinstall my entire system much to my dismay, my 4TB of programs is corrupted. Now, the usb iso for windows 11 is asking for a product key, where would I find my old key? I cannot log into the old system anymore because of the crash but I can access the ssd. Where is the windows key? Can Microsoft just provide me with what I need since I got it through an upgrade?

:)

 

Upgrading from Win 11 home to Win 11 Pro - using Win 10 pro key

I have a new laptop - running Win 11 Home

My old laptop was upgraded to Win 10 pro from win 10 home

Can I transfer this upgrade to the new laptop and then upgrade this to Win 11 Pro ?

Without it affecting any programs that I have installed ?

What would happen if I just change the product key on my Laptop to the old Win 10 pro one ?

 

Win 10 Pro upgrade using Win 8 Pro product key

I just bought a new computer running Win 10 Home. When I went to upgrade to Win 10 Pro using my Win 8 Pro product key from my old computer, the upgrade wouldn't activate.

Now I'm stuck with a bunch of error messages (mainly 0xC004C003) and am being told windows isn't activated. I can't seem to get my activated Win 10 Home back.

I don't have a product key for the Win 10 Home because it came pre-installed. There's no product code recorded on the packaging or labelling on the device.

So:

How do I either

• activate the Win Pro upgrade, or
• Get my activated Win 10 home back?

 

Upgrade a Win 10 home OEM to Win 10 Pro OEM with Win 10 Pro OEM Key?

I recently purchased a laptop that has an OEM version of Win 10 Home on it.

I verified this by using : slmgr -dli.

Previously I had purchased an OEM Win 10 Pro Key.

Can I use this OEM Win 10 Pro Key to upgrade the OEM Win 10 Home to the OEM Win 10 Pro.

If so what are the steps to accomplish this?

In addition, I assume that is this is possible, that the current product key will be updated to the new product key?

The reason I am asking this is that it's my understanding that these product keys are tied to the bios on a name brand laptop.

TIA