Hi guys,
Mikołaj here from Poland. I've run into the same problem. I purchased a brand new HP Victus with a Windows 10 home license which has cost me a pretty penny. I then upgraded to windows 11 home as promted by Microsoft and installed all the necessary drivers provided by HP Support assistant, apperently including a BIOS update.
Now I have this huge watermark telling me my Windows is not activated and obviously the troubleshooting steps provided by Microsoft are useless! The product key at the back of the laptop is not working, either.
My motherboard is HP 88EE version 80.72 and the bios version is UEFI, for what it's worth.
I've read the entire thread but am none the wiser. Could you please help?