Windows 11 not activating after BIOS update on new PC

[netherracksame]

I recently purchased Windows 11 Pro online for my new PC this week. However, after updating my BIOS, Windows 11 Pro deactivated and I am unable to reactivate it. Troubleshooting only shows my old PC for activation, not my new one.
i've tried removing the device from my Microsoft account and re-registering it, but I'm unable to do so. On my new PC, it still shows as a registered device locally, but not online in my Microsoft account.
Since i bought the license through Microsoft online, I can't find my license key, as it is only available in retail.

 

[Xploit Machine]

Login with you Microsoft Account and restart the machine .. please check license status using SLMGR command key under Command Prompt ..

 

[netherracksame]

Login with you Microsoft Account and restart the machine .. please check license status using SLMGR command key under Command Prompt ..

Can you please tell me how to use this command key?

 

[Xploit Machine]

Can you please tell me how to use this command key?

1. Open Powershell as administrator
2. Enter the following command slmgr -ipk <Your product key here>
3. Then enter this command slmgr -ato

Example:

slmgr -ipk 82312-ABCDE-AB89X-1234GF-567YA
slmgr -ato

refer https://www.windows11forums.com/threads/trouble-activating-windows-11-on-hp-device.2997/#post-10860