Windows 10: My windows desktop isn't letting me sign in, it says "We couldn't log in to your account."...

I went on regedit, and I went to Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList. I tried removing the temp file and renaming and removing .bak on my account file. I restarted my desktop, and it still said, "we couldn't log in to your account all files made, or changes will be lost." I did this several times. It isn't working is there some other way to correct the error message that says, "we couldn't log in to your account all files made, or changes will be lost." Thanks for your help,Zahid

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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.

 

UNABLE TO ACTIVATE WINDOWS AND NUM LOCK ISN"T WORKING

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