Your internet stops working when the connection between your device and your ISP's network breaks somewhere

The break can happen at your home (a loose cable, a restarted router), at your ISP's local equipment (a node serving your neighborhood), or anywhere along the path between them. Most of the time you can fix it yourself in under five minutes. Sometimes you cannot, and you need to wait for your ISP to repair their equipment or restore service to your area.

The first step is always the same: restart your router and modem, wait two minutes, and see if the internet comes back. If it does not, the problem is either in your home setup or somewhere in your ISP's network. The next steps depend on which one it is.

Key Takeaways

  • Restart your modem and router by unplugging both for 30 seconds, plugging in the modem first, waiting for all lights to stabilize, then plugging in the router.
  • Check whether your modem has an internet light that is on and steady — if it is off or blinking red, the problem is between your home and your ISP's network.
  • If your modem light is green or blue and steady but you still have no internet, the problem is your router or your device, not your ISP.
  • Your ISP's website or app usually shows whether there is an outage in your area — check there before calling customer service.
  • If your internet drops regularly but comes back on its own, the problem is usually a loose cable, an overheating modem, or interference with your WiFi signal.

How to tell if the problem is in your home or your ISP's network

Your modem is the device that connects to your ISP's network. It usually sits in a closet, on a shelf, or near your router. Look at the lights on the front of it. The light labeled "internet," "online," "WAN," or sometimes just a globe icon tells you whether your modem has a connection to your ISP.

If that light is green or blue and steady, your modem is connected to your ISP's network. The problem is in your home — either your router is not working, or your device is not connecting to the router. Try restarting your router by unplugging it for 30 seconds, then plugging it back in. If you still cannot connect, restart the device you are using (your phone, laptop, or computer) and try again.

If that light is off, red, or blinking, your modem has lost its connection to your ISP. This means the problem is between your home and your ISP's network. Restart your modem by unplugging it for 30 seconds, waiting for all the lights to stabilize when you plug it back in, and then checking that internet light again. If it stays off or red after two minutes, the problem is with your ISP's network or the cables running to your home.

What to check before calling your ISP

Before you contact your ISP, make sure the cables are actually plugged in. Check the cable that runs from the wall to your modem — it should be hand-tight. Check the cable from your modem to your router. Check the power cables to both devices. Loose cables are the most common reason for outages that fix themselves after a restart.

Next, check your ISP's website or mobile app to see whether there is a known outage in your area. Most major ISPs (Comcast, Verizon, AT&T, Charter, Cox) have an outage map you can check without logging in. If there is an outage listed, your service will come back on its own — you do not need to call. The map usually shows an estimated time for restoration.

If there is no outage listed and your modem light is still off or red, try unplugging your modem for a full minute, then plugging it back in and waiting three minutes for it to fully restart. Some modems need a longer restart to reconnect to the network.

When to call your ISP and what to tell them

Call your ISP if your modem light stays off or red after a full restart and there is no outage listed in your area. Have your account number ready — it is usually on your bill or in your ISP's app. Tell them: "My modem light is [off/red/blinking], I have restarted it, and there is no outage listed in my area."

The ISP can check whether your modem is connecting to their network from their end. If it is not, they may need to send a technician to check the cables running to your home or replace your modem. If your modem is connecting but you still have no internet on your devices, they can walk you through restarting your router or checking your WiFi settings.

Most ISPs offer phone support 24 hours a day. Some also offer chat support through their website or app, which can be faster if you are not in a hurry. Have your modem and router in front of you when you call so you can check the lights and restart them if the ISP asks.

Why your internet keeps dropping and coming back

If your internet cuts out for a few seconds or a few minutes and then comes back on its own, the problem is usually not a complete outage. Instead, something is causing your modem or router to restart or lose connection temporarily.

The most common causes are a loose cable (check all connections again), an overheating modem (make sure it has space around it and is not in a hot closet), or interference with your WiFi signal (move your router away from microwaves, cordless phones, or baby monitors). If the drops happen at the same time every day, your ISP may be doing maintenance on your line — this usually stops after a few days.

If restarting your modem and checking cables does not fix the drops, contact your ISP and tell them when the drops happen and how long they last. They can check whether your line is stable from their end and may need to replace your modem if it is failing.

What happens when your entire neighborhood loses internet

When a whole neighborhood or area loses internet at the same time, the problem is almost always at your ISP's local equipment — usually a node or hub that serves multiple blocks. This is different from a problem at your home, and you cannot fix it yourself.

Check your ISP's outage map first. If there is an outage listed, you will see an estimated restoration time. If there is no outage listed but your modem light is off and your neighbors are also without internet, call your ISP and tell them you are in an area without service. They may not have detected the outage yet, and your call helps them prioritize the repair.

Area outages usually take one to four hours to repair, depending on what broke and where the nearest technician is. During this time, your internet will not work no matter what you do at home. If you need internet urgently, you can use your phone's mobile hotspot if you have cellular service.

Frequently Asked Questions

What does it mean if my modem light is blinking instead of steady?

A blinking light usually means your modem is trying to connect to your ISP's network but has not succeeded yet. Wait two to three minutes for it to stabilize. If it keeps blinking after that, restart the modem by unplugging it for 30 seconds. If it still blinks after a full restart, contact your ISP — the problem is likely on their network.

Can I fix my internet by restarting my router instead of my modem?

Only if your modem light is green or blue and steady. If the modem light is off or red, restarting your router will not help because your modem has no connection to your ISP. Always check the modem light first to know which device to restart.

Why does my internet work fine on WiFi but not when I plug in with an ethernet cable?

The ethernet cable may be loose or damaged. Unplug it from both your device and your router, wait five seconds, and plug it back in firmly. If that does not work, try a different ethernet cable if you have one. If ethernet still does not work but WiFi does, the ethernet port on your router may be broken.

Is it normal for my internet to go down once a week?

No. Once-a-week outages usually mean your modem is overheating, a cable is loose, or your ISP is having recurring problems with your line. Check that your modem has space around it and is not in a hot closet. If the problem continues, contact your ISP and ask them to check your line for stability issues.

What should I do if my ISP says there is no outage but my internet is still down?

Ask them to check whether your modem is connecting to their network from their end. If it is, the problem is your router or device. If it is not, ask them to send a technician to check the cables running to your home or test your line for signal problems. Do not accept "restart your modem" as a final answer if you have already done that.