Windows 10: Windows 10 activation not working anymore because 'end of life' which isn't even for...

So I recently had to reinstall windows 10, which as far as I know isn't officially end of life until mid 2025, so it's suppose to still be supported--and my product key stopped working.I have two legitimate windows 10 product keys, one for my tablet and one for my desktop PCMy desktop has been unstable for awhile, and I had to change two pieces of hardware ram and video to get it operational and stable againHowever windows didn't like the changes and I had to perform a clean installwhen I did, I got the error my product key is invalidNow I have the annoying 'activate windows' message coming

:)

 

UNABLE TO ACTIVATE WINDOWS AND NUM LOCK ISN"T WORKING

UNABLE TO ACTIVATE WINDOWS IN SYSTEM AS WELL AS NUM LOCK ISN"T WORKING

 

Printer isn´t working after latest update.

After the latest update from Windows, my Canon Pixma ip6600 printer isnt working. In Device Manager it shows up as working properly but when I go to print it isn´t listed as an option in any programs. Troubleshoot suggests it´s a USB 2 printer on a USB
3 port and that that´s the problem but that cant be since it worked fine before the update. I´ve tried to uninstall and plug it back in but that doesn´t work either.

 

Cortana isn´t working

When I hit enter, it did something, but there´s still no Cortana, even after restart. So I tried it again, but now it says that it failed, because it´s already installed and it´s working in PC. So it should work, but Cortana still isn´t here.