Router Not Connecting to Internet — How to Fix

by Marcus Reed Updated Apr 12, 2026

If your router isn't connecting to the internet, the issue could be your modem, ISP, cables, or router configuration. This guide walks through every possible fix.

Figure 1 — Router Not Connecting to Internet — How to Fix

Step-by-Step Guide

Check all cables — make sure the Ethernet cable from modem to router WAN port is secure.
Restart modem and router — unplug both for 30 seconds. Plug modem in first, wait 2 minutes, then router.
Check modem lights — the "Online" or "Internet" light should be solid. If it's blinking or off, contact your ISP.
Check ISP status — outages are common. Check your ISP's status page.
Login to router — check WAN/Internet settings. Ensure connection type (DHCP, PPPoE, Static) is correct.
Clone MAC address — some ISPs bind service to a specific MAC address. Try cloning your old router's MAC.
Factory reset — as a last resort, reset the router and set it up from scratch.

Related Guides

Video Tutorial

For more information, see Microsoft Windows Support.

Pro Tip: Document your network settings before making changes. A screenshot of your router's config page can save hours of troubleshooting.

Key Takeaways

Restart your router first — this fixes 80% of issues
Test with Ethernet to determine if the problem is WiFi-specific
Check your DNS settings if websites won't load
Contact your ISP if all devices are affected — it may be their issue

Frequently Asked Questions

Why won't my router connect to the internet?

Common causes: loose cables, ISP outage, incorrect WAN settings, or the modem needs a restart. Start by restarting both the modem and router.

How do I know if my router or modem is the problem?

Bypass the router — connect your computer directly to the modem with Ethernet. If you get internet, the router is the problem. If not, it's the modem or ISP.

About Marcus Reed

Marcus Reed is a network technician and technical writer who has configured and troubleshot routers and modems across thousands of home and small business installations for major ISPs including Comcast, AT&T, and Spectrum. That field experience across different hardware, firmware versions, and ISP environments gives him a practical command of what goes wrong and why. At RouterHax, he covers brand-specific router setup guides, ISP modem compatibility, and step-by-step troubleshooting tutorials.