Router Green Lights but No Internet? 8 Fixes

Last updated: October 13, 2026

Seeing green lights on your router but having no internet connection can be frustrating. Your phone or computer may connect to Wi-Fi normally, yet websites refuse to load.

In many cases, the problem involves an internet service provider (ISP) outage, a modem connection failure, a loose cable, or incorrect network settings. Green router lights do not necessarily mean your internet connection is working. Their meaning depends on your router model and the specific indicator.

The quickest approach is to check whether every device is affected, verify your internet service, and troubleshoot your equipment before changing advanced settings or buying a replacement router.

Why Does My Router Have Green Lights but No Internet?

Your router creates a local network that allows devices to communicate. Its lights indicate different functions, such as power, Wi-Fi, Ethernet, and internet connectivity.

A green power or Wi-Fi light may simply mean the router is switched on or broadcasting a wireless network. It does not confirm that the router can reach the internet.

Common causes include:

• An ISP outage or service interruption.
• A loose or damaged WAN or Ethernet cable.
• A modem or fibre terminal that has lost its connection.
• Incorrect IP address or network settings.
• A DNS problem preventing websites from loading.
• A device-specific Wi-Fi or network adapter issue.
• Incorrect router settings or firmware problems.

Quick Diagnosis: Find the Likely Cause

What you notice	What to check first
Every device has no internet	ISP, modem, or router
Only one device is affected	Device network settings
Wi-Fi connects, but websites fail	Internet connection and DNS
Modem’s online light is off	Modem or ISP connection
Ethernet works, but Wi-Fi fails	Wireless settings
Problem began after a power cut	Equipment and physical connections

These are clues, not definitive diagnoses. Check your equipment’s manual before interpreting its indicator lights.

How to Fix Router Green Lights but No Internet

Fix 1: Check Whether Your ISP Has an Outage

Before changing router settings, check whether your internet provider is experiencing an outage.

An ISP interruption can leave your router powered on and broadcasting Wi-Fi while the wider internet is unavailable.

Try these checks:

1. Open your provider’s official service-status page or app using mobile data.
2. Check for announced outages or maintenance.
3. Ask another customer using the same provider whether their connection works.
4. Contact your ISP if the problem persists and no outage information is available.

If your provider confirms an outage, wait for service to return before changing advanced settings.

Fix 2: Restart Your Modem and Router Correctly

Restarting your equipment can resolve temporary connection failures.

If you have a separate modem and router:

1. Switch off both devices.
2. Disconnect their power supplies.
3. Wait approximately 60 seconds.
4. Reconnect the modem and switch it on.
5. Wait for it to complete startup and establish its connection.
6. Reconnect the router’s power.
7. Wait a few minutes, then test the internet.

If you use a combined modem-router, restart it according to the manufacturer’s instructions.

Important: Restarting is not the same as performing a factory reset. Avoid holding the reset button because doing so may erase your Wi-Fi credentials and internet settings.

If the connection remains unavailable, check the cables.

Fix 3: Check the WAN Cable and Ethernet Connections

Your router needs a working connection to the modem or incoming internet equipment. A loose or damaged cable can interrupt this connection even when other lights remain green.

Check the following:

• Ensure the cable from your modem or internet terminal connects to the router’s WAN or Internet port, where applicable.
• Make sure both ends are firmly connected.
• Inspect the cable for visible damage.
• Try a known-working Ethernet cable if one is available.
• Check the connected ports for link indicators.

Do not assume a particular light colour proves the cable is working. Consult the equipment manual.

For fibre connections, avoid bending or disconnecting the optical cable unnecessarily. If your fibre terminal shows a loss-of-signal warning, contact your provider.

Fix 4: Check the Modem or Internet Terminal

A router cannot provide internet access if its upstream connection has failed.

Depending on your service, you may have a cable modem, DSL modem, fibre optical network terminal (ONT), or combined gateway.

Look for indicators labelled Online, Internet, DSL, Broadband, PON, or LOS. Their meanings vary by device.

For example, an online light that remains off may indicate that the modem has not established a connection. A fibre terminal showing a loss-of-signal warning may indicate a line problem.

Check the manual and contact your ISP if an error persists. Explain which indicators are off, flashing, or displaying a warning. Avoid repeatedly restarting equipment while your provider is investigating a line fault.

Fix 5: Test Another Device and Check Your Computer’s Connection to the Router

Connect another phone, tablet, or computer to the same Wi-Fi network.

• Every device fails: Investigate the ISP, modem, router, or shared network settings.
• Only one device fails: Focus on that device’s network configuration.
• Ethernet works but Wi-Fi fails: Investigate wireless settings or interference.
• Only certain websites fail: A DNS, browser, or website-specific problem may be involved.

On the affected device, reconnect to Wi-Fi and try loading multiple websites. If only your computer is affected, see our guide to fixing a work laptop that cannot connect to a company network.

Optional Windows Test: Check Whether Your Computer Can Reach the Router

If the problem remains, test the connection between your Windows computer and the router.

1. Open Command Prompt.
2. Type ipconfig and press Enter.
3. Find your active Wi-Fi or Ethernet adapter.
4. Note the address beside Default Gateway.
5. Type ping followed by that address. For example, ping 192.168.1.1, replacing the example with your actual gateway address.

If you receive replies, your computer can communicate with the router. This does not prove that the router has internet access, but it helps narrow down the problem.

If the test fails, check your local network connection and router settings. Some routers or firewalls block ping requests, so a failed test alone does not prove that the router is faulty.

If the gateway responds but internet access still fails on multiple devices, investigate the modem, WAN connection, and ISP before changing DNS settings.

Fix 6: Check Your IP Address and DNS Settings

If the physical connection appears healthy, incorrect network settings or a DNS failure may explain why websites will not load.

An IP address allows your device to communicate over the network. DNS translates website names into the IP addresses needed to reach them.

On Windows, open Command Prompt and run:

ipconfig

Inspect the active adapter’s IPv4 address and default gateway. If the adapter has no valid gateway or shows an unexpected address, reconnect to the network and check whether the router is assigning settings correctly.

If your connection uses automatic IP configuration, you can refresh the address:

1. Open Command Prompt as Administrator.
2. Run ipconfig /release.
3. Run ipconfig /renew.
4. Run ipconfig /flushdns.

Run each command separately. The release and renew commands may temporarily interrupt your connection while Windows refreshes the address.

What does ipconfig /flushdns do? It clears Windows’ local DNS resolver cache. It does not repair an ISP outage, restore a failed modem connection, or fix a disconnected WAN cable.

If your computer uses a manually configured IP address, workplace network settings, a VPN, or custom DNS, do not overwrite those settings without understanding how they are managed.

Should You Change Your DNS Server?

Not immediately. First establish that your connection is working and that DNS is a plausible cause. If you test another DNS resolver, record your original settings so you can restore them.

For related advice about connection performance, read our guide to why actual broadband speeds differ from advertised speeds. Slow speeds and a complete loss of internet access are different problems.

Fix 7: Check Router Settings and Firmware

 

If your ISP connection appears healthy but multiple devices remain offline, investigate the router.

1. Check whether the WAN or Internet connection is enabled.
2. Consider whether a recent configuration change caused the problem.
3. Check whether the router’s administration page reports an internet connection or WAN address.
4. Consult the manufacturer’s troubleshooting instructions for your exact model.

A firmware update may help with certain router problems, but it should not be your first step.

Before updating, identify the exact model and hardware revision, use the manufacturer’s official support page, and back up the configuration if supported. Follow the update instructions carefully and do not interrupt the process.

If your ISP manages the router’s settings, contact the provider before changing advanced WAN, VLAN, or authentication settings.

Do not factory-reset the router as an early troubleshooting step. A reset can erase important settings and may not resolve an upstream service failure.

Fix 8: Contact Your ISP or Router Manufacturer

If the previous steps do not restore your connection, contact your ISP before purchasing replacement equipment.

Explain what you have checked:

• Whether all devices are affected.
• Which modem or fibre-terminal indicators are showing errors.
• Whether the router’s WAN connection appears active.
• Whether restarting the equipment changed anything.
• Whether the issue began after a power cut or configuration change.

Your provider may be able to test the line remotely, check for an outage, verify your account or connection provisioning, or arrange a technician visit.

If the ISP confirms that the incoming connection is healthy, contact the router manufacturer about possible hardware or configuration problems.

Replace the router only when troubleshooting provides a reasonable basis to suspect that the device is faulty.

Why Green Router Lights Can Be Misleading

Router lights report the status of particular functions, not necessarily the health of the entire internet connection.

Your Wi-Fi indicator may be green because the wireless network is active, even though the router has lost its connection to the ISP. A power light can confirm that the router is switched on without proving that the modem or fibre line is working.

Instead of relying on the lights alone, determine whether your computer can reach the router and whether multiple devices can access the internet.

Quick Checklist Before Resetting Your Router

• Check for an ISP outage.

• Restart the modem and router correctly.

• Inspect WAN and Ethernet cables.

• Check modem or fibre-terminal indicators.

• Test another device.

• Use the Windows gateway ping test if needed.

• Check IP and DNS settings only when appropriate.

• Review router settings and firmware carefully.

• Contact your ISP if the connection remains unavailable.

  Official Resources for Router and Internet Troubleshooting

  For additional help diagnosing a router that shows green lights but has no internet access, consult these official support resources:

  • Microsoft: Fix Wi-Fi connection issues in Windows — Follow Microsoft’s troubleshooting steps for Wi-Fi connectivity, IP address problems, and DNS cache issues.
  • Microsoft Learn: ipconfig command — Learn how to check your computer’s IP address and default gateway, renew its IP configuration, and flush the DNS cache.
  • Microsoft Learn: ping command — Understand how to test IP-level connectivity between your computer and another network device, including your router.
  • Microsoft: Get connected when setting up your Windows device — Find additional guidance on restarting a modem and Wi-Fi router and resolving common connection problems.

  Tip: Router indicator lights and configuration options vary by manufacturer and model. For device-specific instructions, visit your router manufacturer’s official support website or contact your internet service provider (ISP).

Frequently Asked Questions

Why does my router show green lights but no internet?

Green lights may indicate that the router is powered on or broadcasting Wi-Fi. They do not necessarily confirm an active internet connection. Check your ISP, modem, WAN cable, and connected devices.

Can Wi-Fi be connected without internet access?

Yes. A device can connect to your router’s local Wi-Fi network while the router has no working connection to the internet.

Should I reset my router if all the lights are green?

Start with an outage check, a normal restart, cable checks, and testing another device. Avoid a factory reset until simpler steps fail and you can restore your settings.

Can a DNS problem cause Wi-Fi to work but websites not to load?

Yes. A DNS failure can prevent website names from resolving, but similar symptoms can result from an ISP outage, router fault, browser issue, or incorrect device settings.

When should I replace my router?

Consider replacement after checking the ISP connection, cables, settings, and manufacturer guidance. A confirmed hardware fault or persistent failure may justify replacing the device.

More Internet and Connectivity Guides

• Fix a work laptop that cannot connect to a company network
• Understand why broadband speeds differ from advertised speeds
• Troubleshoot Netflix buffering when internet speeds seem fast

Final Thoughts

If your router has green lights but no internet, do not assume that the router is broken. The cause may be an ISP outage, a modem connection failure, a loose WAN cable, a device-specific problem, or incorrect network settings.

Check your provider and test multiple devices first. Then inspect the physical connections and use the Windows gateway ping test when helpful. Investigate IP settings, DNS, and router firmware only when the evidence points in that direction.

If the connection still fails, contact your ISP with the results of your checks. This can help narrow down the fault without unnecessary resets, configuration changes, or equipment purchases.

Author: Ezekiel Chihurum