Do link:
At this point, you’ll have a brand new Wi-Fi network that’s connected to your home internet. Keep in mind that this will only work as long as the Windows machine that’s running the network is active. This also isn’t a total replacement for a proper router, but it can get you by in a pinch.
Você ligou / desligou o computador ou fez alguma outra coisa que possa ter feito parar de funcionar?