Your WiFi router lost its connection to the internet, or your device lost its connection to the router

When you say "the wireless internet isn't working," one of two things has actually happened. Either your router — the box that broadcasts WiFi — has lost its connection to your internet service provider's network, or your device (phone, laptop, tablet) has lost its connection to the router itself. These are different problems with different fixes, and figuring out which one you have takes about 30 seconds.

Start by looking at your router. Most routers have lights on the front. Look for a light labeled "Internet," "WAN," "Online," or sometimes just a globe icon. If that light is off or red, your router has lost its connection to your ISP — the problem is between the router and the outside world. If that light is on and green, your router is fine; the problem is between your device and the router. This distinction matters because it changes what you do next.

Key Takeaways

  • Check your router's internet light first — if it is off or red, the problem is between your router and your ISP, not between you and the router.
  • Restart your router by unplugging it for 30 seconds, then plugging it back in; this fixes most connection problems.
  • If your device sees the WiFi network but cannot connect, forget the network on your device and reconnect by entering your password again.
  • If your router's internet light is off and restarting does not fix it, check that the cable from the wall is plugged into the correct port on the router.
  • Interference from microwaves, cordless phones, and baby monitors can weaken WiFi in specific rooms, but moving the router or switching to a different channel usually solves it.

How to restart your router the right way

Restarting your router fixes about 70 percent of WiFi problems. The correct way is to unplug the power cable from the back of the router, wait 30 seconds (count them out), then plug it back in. Do not use the power button on the router if it has one — that usually just puts it to sleep rather than fully restarting it.

While the router restarts, you will see lights blinking on the front. Wait until all the lights stop blinking and settle into their normal pattern — usually two to three minutes. Then try connecting again. If your internet light is now green and your device can see the WiFi network, you are done.

When your device sees the WiFi but will not connect

Sometimes your phone or laptop shows your WiFi network in the list of available networks, but when you try to connect, it either fails or asks for the password over and over. This usually means your device has old or corrupted information about your network stored in its memory.

The fix is to "forget" the network on your device, then reconnect fresh. On most phones and laptops, you can do this by going to WiFi settings, finding your network name in the list, and selecting "Forget" or "Remove." Then select the network again and enter your WiFi password. Your device will now store fresh connection information. If you do not know your WiFi password, it is usually printed on a sticker on the bottom or back of your router.

When your router has no internet connection

If your router's internet light is off or red after you restart it, the problem is between the router and your ISP. Start by checking the cables. Your router should have at least two cables plugged into it: one power cable and one network cable (usually called an ethernet cable, and it looks like a thick phone cord). The network cable comes from the wall, from a modem, or from a box provided by your ISP.

Make sure the network cable is plugged into the correct port on your router. Most routers have one port labeled "Internet," "WAN," or "Modem" — this is the one that should connect to your ISP. The other ports, usually labeled "LAN" or just numbered, are for devices in your home. If the cable is in the wrong port, move it to the correct one and wait two minutes for the light to turn green.

If the cable is in the right port and the light is still off, unplug the cable from both ends, wait 10 seconds, and plug it back in firmly. Sometimes the connection gets loose. If the light still does not turn green after two minutes, the problem is likely with your modem or your ISP's network, not your router.

When WiFi works in some rooms but not others

If your WiFi is strong in the kitchen but weak or nonexistent in the bedroom, the problem is usually interference — something is blocking or scrambling the radio signal your router sends out. Microwaves, cordless phones, baby monitors, and some older wireless speakers all broadcast on the same frequency (2.4 GHz) that most routers use.

The simplest fix is to move your router to a more central location in your home, away from walls and metal objects. If that is not possible, you can try switching your router to a different channel. Most routers let you do this through a settings page — you usually type your router's IP address (often 192.168.1.1) into a web browser, log in with a password (usually on the router's sticker), and look for "WiFi Channel" or "Channel Selection." Try channels 1, 6, or 11 on the 2.4 GHz band, as these do not overlap with each other.

When you have restarted everything and it still does not work

If you have restarted your router, checked all the cables, and your internet light is still off, the problem is likely outside your home. Your ISP's network might be down in your area, or there might be a problem with your modem (the device that connects your home to the ISP's network). Call your ISP's customer service number — it is usually on your bill or on their website — and tell them your router's internet light is off. They can check whether there is an outage in your area and whether your modem is working correctly.

Before you call, have your account number ready and be prepared to describe what lights you see on your router and modem. If your ISP asks you to restart your modem, do the same thing you did with the router: unplug it for 30 seconds, then plug it back in, and wait for the lights to settle.

Understanding WiFi range and signal strength

WiFi has a limited range. Most home routers broadcast a signal that reaches about 150 feet in open space, but walls, floors, and metal objects reduce that range significantly. A router in your basement might not reach your upstairs bedroom. A router in a closet might not reach across your home.

If your WiFi works but is very slow in certain rooms, try moving the router to a higher, more central location — on a shelf rather than on the floor, in the middle of your home rather than in a corner. Avoid putting it inside a cabinet or next to a TV, as these block the signal. If moving the router is not practical, you might need a WiFi extender or a mesh WiFi system, which uses multiple smaller routers to spread the signal throughout your home.

Frequently Asked Questions

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

Check the internet light on your router. If it is green, your ISP connection is working and the problem is between your device and the router. If it is off or red, the problem is between your router and your ISP. You can also restart your modem (the device from your ISP) using the same method as the router: unplug for 30 seconds, then plug back in.

Why does my WiFi work fine one day and stop the next?

This usually means something changed — either interference from a new device, a loose cable that got bumped, or your ISP had a brief outage that your router did not recover from cleanly. Restart your router first. If the problem keeps happening, note what time it occurs and call your ISP to ask if there have been outages in your area.

Can I fix WiFi problems by restarting my device instead of the router?

Restarting your device helps if the problem is between your device and the router, but it will not help if the router itself has lost its internet connection. Always restart the router first, since that fixes most problems. Restarting your device is the second step if the router restart does not work.

What is the difference between WiFi and internet?

Internet is the connection between your home and the outside world — it comes from your ISP through a cable or phone line. WiFi is the wireless signal your router broadcasts so your devices can connect without cables. You can have internet but no WiFi (if your router is broken), or WiFi but no internet (if your router has lost its connection to the ISP).

Should I restart my router regularly even when it is working fine?

Restarting once a month can help prevent problems from building up, but it is not necessary if everything is working well. If you notice your WiFi getting slower over time, try restarting the router before calling your ISP.