Start with the simplest fixes first

Most WiFi connection problems come from something you can fix in under a minute. Before you restart your computer or call your internet provider, check three things: whether WiFi is actually turned on in your computer's settings, whether your router is powered on and has lights showing it is working, and whether you are trying to connect to the right network name.

On Windows, look for the WiFi icon in the bottom right corner of your screen — it should show available networks when you click it. On Mac, click the WiFi icon in the top right corner. If you see "WiFi: Off" or no networks listed at all, your WiFi hardware may be disabled. Look for a physical WiFi button on your keyboard (often marked with a WiFi symbol) or check your computer's settings to turn it back on.

For your router, walk over to it and look at the lights. Most routers have a power light and an internet light. If the power light is off, plug it in or check that the power cable is seated firmly. If the internet light is red or off, your router may not be connected to your modem — check that cable too.

Key Takeaways

  • WiFi turned off in your computer settings is the most common reason for no connection — check your keyboard for a WiFi button or your system settings.
  • Your router needs power and a working connection to your modem; check both cables and the lights on the front of the device.
  • Restarting your router by unplugging it for 30 seconds often fixes connection drops and slow speeds without any other work.
  • If your computer connects to other networks but not yours, the problem is usually your router or password, not your computer.
  • Forgetting the network and reconnecting from scratch solves most cases where your computer remembers the wrong password or old settings.

Restart your router and modem in the right order

Restarting fixes roughly half of all WiFi problems. The order matters: restart the modem first, then the router, then wait for both to fully come back online before trying to connect.

Unplug your modem (the device your internet provider gave you, usually a box with cables running to the wall) and leave it unplugged for 30 seconds. Plug it back in and wait two to three minutes for the lights to stabilize — you should see a steady light, not blinking. Then unplug your router (the device that broadcasts WiFi, usually smaller and with antennas) and leave it unplugged for 30 seconds. Plug it back in and wait another two to three minutes.

Once both devices have fully restarted, try connecting again. This clears temporary errors in both devices and often restores a connection that was dropping or refusing new devices.

Forget the network and reconnect with the correct password

Your computer sometimes remembers an old or incorrect password for your WiFi network. When this happens, it will not connect even if you type the right password. The fix is to delete the network from your computer's memory and add it again from scratch.

On Windows, go to Settings > Network & Internet > WiFi > Manage Known Networks. Find your network name in the list, click it, and select "Forget". Then go back to the available networks list, find your network, and select it. When prompted, enter your WiFi password — the one printed on the back of your router or in your router's settings page.

On Mac, go to System Settings > WiFi, click "Details" next to your network name, then click the minus sign to remove it. Click "WiFi" in the sidebar, find your network in the list, and select it. Enter your password when prompted.

If you do not know your WiFi password, you can find it on the back of your router (usually a sticker with "WiFi Password" or "Network Key") or log into your router's settings page by opening a web browser and typing the router's IP address — usually 192.168.1.1 or 192.168.0.1.

Check whether your router is broadcasting your network name

Some routers have a setting that hides the network name from the list of available networks. If you do not see your network name when you click the WiFi icon, this might be the problem.

Log into your router's settings page by opening a web browser and typing your router's IP address (usually 192.168.1.1 or 192.168.0.1). Look for a setting called "SSID Broadcast" or "Hide Network" — it should be turned on. If it is off, turn it on, save the settings, and wait 30 seconds for the change to take effect. Your network name should now appear in the list of available networks.

If you cannot find this setting or do not remember your router's login password, restart the router by holding down the reset button on the back for 10 seconds — this returns it to factory settings and resets the password to the default (usually printed on the router itself).

Check your computer's WiFi drivers and hardware

Your computer's WiFi hardware needs a driver — a piece of software that lets Windows or Mac talk to the WiFi card. If the driver is outdated, missing, or corrupted, your computer will not connect even if everything else is working.

On Windows, right-click the Start button and select "Device Manager". Look for "Network Adapters" and expand it. Find the entry that mentions WiFi or wireless — it might say "Wireless Adapter" or include your router brand. If there is a yellow exclamation mark next to it, the driver is having a problem. Right-click it and select "Update Driver", then choose "Search automatically for updated driver software". Windows will search for and install the latest version.

On Mac, this is less common, but you can check by going to System Settings > General > About and clicking "System Report". Look for "Wi-Fi" in the left sidebar. If it shows no information or an error, restart your computer — Mac usually fixes driver problems on restart.

If updating the driver does not work, your WiFi hardware itself may be failing. This is rare, but if your computer will not connect to any network and restarting has not helped, the WiFi card may need replacement — this is a job for a computer repair shop.

Look for interference from other devices

WiFi signals travel on radio frequencies that other devices also use. Microwaves, cordless phones, baby monitors, and some USB devices can interfere with your connection, especially if they are close to your router.

If your connection drops or is very slow, try moving your router away from these devices or moving them away from your router. Keep your router in an open, central location rather than in a closet or behind a metal object. If you have a dual-band router (one that broadcasts on both 2.4 GHz and 5 GHz), try connecting to the 5 GHz network instead — it is faster and less crowded, though it does not travel as far.

You can also check whether a neighbor's network is on the same channel as yours and causing interference. Log into your router's settings and look for a "Channel" setting under WiFi or Wireless. Try changing it to a different channel (1, 6, or 11 are usually best for 2.4 GHz networks) and see whether your connection improves.

Verify your internet connection is actually working

Sometimes the problem is not WiFi at all — it is that your internet connection from your provider is down. Your router may be broadcasting WiFi fine, but there is no internet coming in to share.

Check the lights on your modem. The internet light (usually labeled "Internet", "WAN", or "Online") should be solid green or blue. If it is red, orange, blinking, or off, your provider's connection is down. Call your internet provider's customer service number (on your bill or their website) to report the outage — they can tell you whether it is a known issue in your area and when it will be fixed.

If the modem light is solid but you still cannot reach websites, restart both your modem and router again, then try opening a website in your browser. If it still does not load, contact your provider — the problem is on their end, not yours.

Frequently Asked Questions

Why does my computer connect to WiFi but not the internet?

Your computer is connecting to the router fine, but the router does not have internet coming in from your modem. Check the internet light on your modem — if it is not solid green or blue, restart both the modem and router. If the light stays red or off, contact your internet provider.

How do I know if my WiFi password is wrong?

Your computer will show an error message like "Cannot connect to this network" or "Incorrect password" when you try to connect. The password is printed on the back of your router. If you have changed it and forgotten the new one, you can reset your router to factory settings by holding the reset button for 10 seconds.

Can a VPN or firewall block my WiFi?

A VPN or firewall can block internet traffic once you are connected, but they do not usually prevent the WiFi connection itself. If you recently installed a VPN or security software and then lost WiFi, try uninstalling it to see whether that fixes the problem.

Why does my WiFi work on my phone but not my computer?

This means your router is working fine — the problem is your computer's WiFi hardware or driver. Try forgetting the network and reconnecting, updating your WiFi driver, or restarting your computer. If none of that works, your computer's WiFi card may need replacement.

Should I buy a new router if none of this works?

Not yet. If your computer will not connect to any network, the problem is your computer, not the router. If your computer connects to other networks but not yours, try resetting your router to factory settings first. Only replace the router if other devices also cannot connect to it.