Your device is connected to the router, but the router itself has lost its connection to your internet service provider
When your WiFi shows "connected" or "no internet connection," the problem is almost always between your router and your internet service provider — not between you and your router. Your phone or laptop successfully found and joined your WiFi network. The break is downstream, at the box that brings internet into your home.
This distinction matters because it tells you where to look first. You do not need to restart your device or forget and rejoin the network. You need to check whether your modem — the device that connects to your ISP's cable or fiber line — is actually receiving a signal.
Key Takeaways
- A "no internet" message while connected to WiFi means your modem has lost its connection to your ISP, not that your WiFi network itself is broken.
- Check the lights on your modem first: a red light or no light on the internet/online port means the modem is not receiving a signal from your ISP.
- Restart your modem by unplugging it for 30 seconds, then plugging it back in and waiting two to three minutes for it to fully boot.
- If the modem still shows no internet light after restart, contact your ISP to report an outage or service issue in your area.
- If the modem light is green but you still have no internet, restart your router by unplugging it for 30 seconds after the modem is fully online.
Check the lights on your modem first
Your modem is the device that connects directly to the cable or fiber line coming into your home. It usually sits near where that line enters the wall. Look at the lights on the front of the modem — they tell you what is actually happening.
Most modems have a light labeled "Internet," "Online," "WAN," or "Downstream." If that light is red, orange, or off, your modem is not receiving a signal from your ISP. This is the most common reason for "no internet connection" even though WiFi shows as connected. If the light is green or blue and steady, your modem is receiving a signal — and the problem is likely between the modem and your router instead.
Write down what color each light is right now. You will need this information if you call your ISP.
Restart your modem if the internet light is off or red
Unplug the modem from the power outlet. Wait 30 seconds — this is not arbitrary; it gives the modem time to fully discharge. Plug it back in and wait two to three minutes without touching anything. The lights will flash and change as the modem boots up. Watch for the internet or online light to turn green or blue and stay steady.
If the internet light turns green and stays green, your connection is restored. You can now use the internet normally. If it stays red or off after three minutes, your modem is not receiving a signal from your ISP, and restarting will not fix it.
Contact your ISP if the modem light stays red after restart
A red or missing internet light after restart means your ISP's network is not sending a signal to your modem. This could be an outage in your area, a problem with the line coming into your home, or an issue with your account. You cannot fix this yourself.
Call your ISP's customer service number (usually on your bill or their website). Tell them the internet light on your modem is red or off, and that you have already restarted the modem. They can check whether there is an outage in your area, test the line to your home, and restart your service from their end if needed. Have your account number and the modem model ready when you call.
If the modem light is green but you still have no internet, restart your router
If your modem's internet light is green and steady, but your devices still show "no internet connection," the problem is between the modem and your router. Restart the router the same way: unplug it for 30 seconds, plug it back in, and wait two to three minutes for it to fully boot.
Most routers have a light that shows internet status — often labeled "Internet," "WAN," or "Online." Once the modem is fully online (green light steady), watch the router's internet light. It should turn green within a minute or two. If it does, your internet is working again. If it stays red or off, the router may have a problem communicating with the modem, and you may need to restart both devices again or contact your ISP for help.
Check the cable connections between modem and router
While you are restarting, look at the cables. The cable from the wall (coax, fiber, or phone line depending on your ISP) should be firmly plugged into the modem. The cable from the modem to the router (usually an ethernet cable, which looks like a thick phone cord) should be firmly plugged into both devices.
If either cable is loose, push it in until you hear or feel a click. Loose cables are a common reason for "connected but no internet." If the cables are already tight and the lights are still not green after restart, the cable itself may be damaged — try a different ethernet cable between the modem and router if you have one available.
What to do if restarting does not work
If you have restarted both the modem and router, checked the cables, and the modem's internet light is still not green, contact your ISP. If the modem light is green but the router light is red, try restarting both devices one more time in order: modem first, wait for it to fully boot, then router. If that does not work, the router may need to be replaced or reconfigured, and your ISP can walk you through next steps.
Write down the exact color of each light, what you have already tried, and how long the problem has been happening. This information helps your ISP diagnose the issue faster.
Frequently Asked Questions
Why does my WiFi say "connected" if there is no internet?
Your device successfully connected to your router's WiFi network, but your router has no internet to share. The WiFi connection itself is working — the internet connection feeding the router is not. This is why restarting your device does not help; the problem is not on your device.
How long does it take for a modem to restart?
Most modems take two to three minutes to fully boot and reconnect to your ISP after you plug them back in. The lights will flash and change during this time. Wait until the internet light is steady green before assuming the restart did not work.
Can a loose cable cause "no internet" even if WiFi shows connected?
Yes. A loose ethernet cable between your modem and router is one of the most common causes. Check that both ends are pushed in firmly until they click. If the cable is loose, pushing it in may restore your internet when ready.
What if my modem has no lights at all?
Check that the power cable is plugged into both the modem and the outlet. If the modem is plugged in and has no lights, it may not be receiving power. Try a different outlet or power cable if you have one. If it still has no lights, the modem may be broken and need to be replaced by your ISP.
Do I need to restart my router if the modem light is red?
No. If the modem's internet light is red or off, restarting the router will not help. The problem is between the modem and your ISP. Restart the modem first and wait for the internet light to turn green. Only restart the router if the modem light is green but you still have no internet.