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- HP Community
- Desktops
- Desktop Operating Systems and Recovery
- ACTIVATION PRODUCT KEY , HARD DISK REPLACE TO SSD

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07-04-2024 12:14 PM
The product specs for your notebook indicate that it comes with W10 Home.
HP Pavilion x360 - 13-u104tu Product Specifications | HP® Support
That means it should have a W10 Home product key encrypted in the BIOS and you shouldn't even have needed a product key to reinstall W10 Home.
Download, install and run the free Showkey Plus app from the Microsoft Store.
ShowKeyPlus - Free download and install on Windows | Microsoft Store
The report should show you the W10 Home OEM key that is in the BIOS.
If the key you used was different than the OEM product key in the showkey plus report, change the product key to the OEM key in the PC settings menu and see if you can activate W10 with the OEM key.