Windows 10: Can’t reactivate Win 11 after reinstalling

I received a new GMKtec K11 Ryzen™ 9 8945HS 1TB 32Gig RAM Mini PC and when I turned it on I activated the copy of Windows 11 Pro and it activated fine I think before I had linked it to my Microsoft account to this PC later that day I had to do a reinstall of Windows 11 Pro from with the software download from the manufacturer now when I try to reactivate I keep getting this error message…We can't activate Windows on this device because you don't have a valid digital license or product key. If you think you do have a valid license or key, select Troubleshoot below. Error code: 0xC004F012I’ve

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How to reinstall and reactivate Windows 10 with an OEM license

Before you continue, I suggest you remove the bloatware by the Control Panel and uninstalling the junk. That is faster and easier, with less potential for problems, but the steps for reinstallation are as follows:

Before you do anything, backup valuable data, if any, on some form of media (i.e. USB) so you can move it onto the reinstalled Windows.

1. Download the appropriate ISO file from Microsoft and burn it to a CD or use it with a bootable USB.
   
2. (Optional if you have no internet) Download all the appropriate drivers for your machine and save them on media for later access.
   
3. Locate the product key on your machine. It is usually under the laptop on a sticker, and if not, use special software to locate it. This will be used during the reinstallation. Note that PCs sometimes auto-activate if it is in the BIOS so this step is not needed if this is case.
   
4. Boot from the bootable media (disc or USB). Continue as usual through the installation, and when the partitions screen comes up, format the current Windows partition and install in there. (The Recovery partition can be deleted, but I recommend keeping it so if anything goes wrong you can restore to factory settings). If the key doesn't work you may need to contact Microsoft and activate over phone.
   
5. After installation, install the drivers and run Windows Update and you're done.
   

 

Switching from Win 10 to Win 11

I suggest you do a drive image backup of your current win 10 drive. I had some issues with Win 11 and I roll back using the Win10 image. As you don't have a Win 11 supported CPU, you have to tweak the Win 11 installation files. How to upgrade from Win11 21h2 to Win 11 22h2 - A guide | Windows 11 Forum It is the same process to upgrade from win 10