I have the same issue, updating motherboard / BIOS caused my Windows to deactivate and I cannot activate it again. My license is moved from old PC I had, basing on the Win 7 or 8 key, I cannot find in any my records. I cannot activate from web, technician asks for this old key I cannot find, mentioning it won't work with Win 11.
Microsoft, seriosuly?
My MOBO is MSI Z690 EDGE DD4