If you're installing your router as part of moving into a new home or apartment, it's all the more important to make sure you have an active internet connection, since you are likely to be setting up your router alongside a newly installed or activated internet service.
To check internet status, simply connect to your modem or ISP gateway using an Ethernet cable, and plug it directly into your laptop or desktop PC. (If you don't have an Ethernet port on your laptop, you'll want to get an Ethernet adapter.) If your computer is getting an internet connection, you're in good shape to set up the router.
If you have questions or need any assistance troubleshooting, just visit: Router Settings | Eero Help