If you’re using a modem directly connected to your ISP, the first step is checking to see if your ISP is properly setting up and configuring your modem. If you’re using a third-party modem, the first step is verifying that the modem is compatible with your ISP’s network. Once you’ve verified that your modem and ISP are setup correctly, you may need to check to make sure that your router is set up properly. In some cases, firmware on your router can conflict with the firmware on your modem, preventing them from communicating properly. To fix this issue, you will likely need to update both your router and modem firmware.