My motherboard died so I had to replace it; couldn't find a similar chipset so decided to upgrade the CPU as well (i5 10500 passively-cooled in an H470M-itx/ac, will post the completed build soon).
I hadn't linked my activation key to my microsoft account so now all my attempts have run aground. I've downloaded ProduKey and it found a key which didn't work, though it did give a different path to telling me it didn't work than when I dug a windows 8 product key out of my email inbox, instead of instantly getting a message saying it wasn't a valid key, it gives me a further dialogue box that says to activate and then says 'we can't activate windows on this device because you don't have a valid digital license or product key', then prompts me to run troubleshooting which has the only option as logging into my microsoft account, only to see that there's no key associated with my account.
Anyone had similar problems and know how to help please?
Thanks!