us this as your script, you'll be fine:
my windows 10 deactivated after i did a firmware update on the motherboard
my windows 8 key was Key: **************************************
i had windows 10 clean installed and activated, did bios update and then it de activated
it is a full retail key
windows 10 upgrade was from within windows 8.1
it activated
i then did a clean install
and again it activated
, i changed gfx card
the motherboard had to have a firmware update to make the gfx card work
once i had updated bios and installed card windows deactivated
Error code: 0xC004C003
i had a full retail version of windows 8.1, i am entitled to a windows 10 retail key as per the EULA section 4b
also please see this link
https://www.microsoft.com/en-gb/windows/windows-10-faq
in particular this text:
Yes. Once you’ve upgraded to Windows 10 using the free upgrade offer, you will be able to reinstall, including a clean install, on the same device. You won’t need a product key for re-activations on the same hardware. If you make a meaningful change to your hardware, you may need to contact customer support to help with activation.
I have been advised to re-install previously, this is unreasonable as I have a fully licensed 8.1 Retail Key I would like the same to replace the Windows 10 key that is no longer working