Cannot login to Windows Ensure you are using your correct continental username and password. Check that Caps Lock/Num Lock isn't on by mistake. Check that your password is what you are expecting it to be by typing it into the Username box. This allows you to see what you are typing in case your keyboard is set to another locale, for example. Check that the 'Logon to' box shows continental as the domain (only if your computer is on the continental network). Check the network cable is securely plugged in at both ends. Try logging on to another computer to see if your account works on that. Ask someone else to logon to your computer to see if they can or not.