Windows 10: Just reset my laptop. Now windows isn't activated.

My laptop was having issues not booting and wasn't able to roll back to a recovery point. So I reset it and everything was working fine. however at the moment it's saying my windows isn't activated, and there's now a watermark in the corner of my screen. Is there somewhere I can find the activation code or something? Cause my paperwork that came with the laptop has gone missing. I paid for my laptop to come with Windows 10 Pro and I don't really want to buy it again.Thank you.

:)

 

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.

 

Problem with dvd writer in HP dv 6700 laptop

Thankyou, the laptop isn’t my main computer, but I will run the diagnostics program as suggested

 

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.