If you’re experiencing problems connecting to the internet, first check that all of your devices are plugged into their respective outlets. Your modem should be plugged into the wall with a power adapter as well as a coax cable (or phone line or fiber optic cable). Your router should be plugged into your modem via an Ethernet cable and an electrical outlet. If you are sure your connections are correct, try unplugging your modem and router from their cable outlet, waiting a minute, then plugging them back in. Otherwise, contact your ISP for support.