Windows 10: My desktop pc alienware isn't showing a work tab at all in setting, it only shows that I...

Recently my desktop computer has stopped allowing me to connect via Wi-Fi and only shows the Ethernet option, this has never been a problem in the past and I can't figure out how to fix it.

:)

 

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.

 

Alt tab shows windows on all desktops.

On Windows 10, when I alt tab, it shows the windows open on all of my open desktops. I found the setting in system/multitasking and its set on "Only the desktop I'm using", but it still shows windows on all open desktops. I've tried setting it to "All desktops"
and restarting, then changing it back and restarting and nothing I try seems to work.