I'm starting to get really annoyed with my Wi-Fi / modem. When I'm on my laptop, I stay connected to the Internet for roughly an hour and then it disconnects all of a sudden. When I try to reconnect, it says: Cannot connect to this network. I restart the modem and it works for an hour and then goes off again. I have to restart it several times a day. I've even tried to connect to a public Wi-Fi and it happens. What's wrong here? This is an Asus laptop.