Windows 10: Can't start marvel rivals because my windows isn't activated

I can't start marvel rivals because my operating system is out of date i had windows 10 pro but after sometime it just deactivated for no reason and i don't have product key becouse am not the one who built the pc so i didn't get updates and my trouble shoot doesn't work

:)

 

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.