Get your HP printer up and running again in no time! One of the frequent issues a hp printer user faces is the printer getting disconnected from the Wi-Fi after changing the wireless router, network name or password. So, tackling the question of how to reconnect HP printer to WiFi, you find a solution using two methods. This guide will walk you through the methods of how to connect your hp printer to a new wireless router (WiFi) after you've replaced or upgraded from your old one.