Hello, I’m Virginia, a fellow user like yourself.
Sorry to hear you’re experiencing problems.
There’s a known bug between Win 11 24H2 & OEM licenses where it incorrectly shows the Activate Windows message, so far I haven’t seen any workaround.
You can try right click Start>Terminal with admin & copy & paste this cmd: slmgr.vbs /ato then click enter to try & reactivate with the key i the BIOS.
Or try this cmd to see if the key is shown:
wmic path softwarelicensingservice get OA3xOriginalProductKey
Then follow these instructions from Lucas DeAudi here: https://answers.microsoft.com/en-us/windows/for...:
Run CMD or Powershell as an administrator
Enter this command "slmgr /ipk YOUR-PRODUCT-KEY", replacing the YOUR-PRODUCT-KEY with your actual product key. I have a sticker with it on my PC's casing, but you can use a third-party utility like "ShowKeyPlus" as well.
That alone won't activate your OS. Now, it's time to open the Settings and run the Activation troubleshooter, or you can run "slmgr /ato". These two things should work about the same.
Windows activated!
I have personally done so and I will suggest it to you as well. Make a copy of your registry with this command
"reg export "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\SoftwareProtectionPlatform" C:\ActivationBackup.reg /y" for any future issues.