Now once the router is restarted you will need to enter the IP 192.168.1.1 and not 192.168.l.l...
Keep your ISP provided settings handy to get connected to Internet again. Experienced people can do this so try only if you have experience...
The IP Address 192.168.l.l/ 192.168.1.1 is the very default for all the modems and ADSL modems and WiFi Routers and basic Routers. The default IP address which is very commonly known as host address is used to access the router and modem configurations. These IP's can also be used as default IP's by manufacturers 10.0.0.1 or 10.0.0.1