Windows deactivated after changing hardware. Using windows 10 that was upgraded from 8.1. Only have windows 8.1 key.

[Windows 10]

I replaced some hardware on my computer and when I booted it up, windows become deactivated. I have windows 10, but not a key for it since it was the free upgrade they rolled out for windows 8.1. If I try to renter this key, I get an error about invalid key and stuff.Error code: 0x803FA067 is what I get on the activation tab of settingsAnd error code: 0x800705020 is what I get when I try to run the troubleshooter.I'm not sure how to go about solving this. Do I just have to buy windows 11 at this point?

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