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 anyone, check three things: whether WiFi is turned on at all, whether your computer is in airplane mode, and whether you are typing the password correctly.

On Windows, look for the WiFi icon in the bottom right corner of your screen near the clock. If it shows an X or a crossed-out symbol, WiFi is off — click it to turn it back on. On Mac, click the WiFi icon in the top right corner and select your network. On both systems, airplane mode disables all wireless connections; check your settings or keyboard shortcuts (often a key with an airplane symbol) to turn it off. If you see your network name in the list but cannot connect, the password is the most common culprit — passwords are case-sensitive, so "MyNetwork" is not the same as "mynetwork".

Key Takeaways

  • Check whether WiFi is physically turned on in your system settings, and verify you are not in airplane mode before troubleshooting anything else.
  • Restart your router by unplugging it for 30 seconds, then plugging it back in — this fixes roughly half of all connection problems.
  • Move closer to your router to rule out range or interference issues, and check whether other devices can connect to the same network.
  • Forget the network on your computer and reconnect by re-entering the password, which clears out corrupted connection settings.
  • Update your WiFi driver through Device Manager on Windows or System Preferences on Mac if basic steps do not restore your connection.

Restart your router and modem

A restart clears the router's memory and resets its connection to your internet service provider. Unplug your modem (the device your internet provider gave you) and your router (the device that broadcasts WiFi) from power. Wait 30 seconds — this matters, because the devices need time to fully shut down. Plug the modem back in first and wait two to three minutes for its lights to stabilize, then plug in the router and wait another two to three minutes.

During this time, the modem and router are communicating with each other and your internet provider's network. You will see lights change from red or orange to green or blue when they are ready. Once both devices show stable lights, try connecting your computer to WiFi again. If your router has a reset button (usually recessed and requiring a paperclip to press), do not use it unless nothing else works — a reset erases your WiFi password and all custom settings.

Check whether other devices can connect

Try connecting a phone, tablet, or another computer to the same WiFi network. If other devices connect without trouble, the problem is specific to your computer, not your router or internet. If no devices can connect, the issue is with your router or internet service, and restarting both (as described above) is your next step.

If only your computer cannot connect while others can, write down the exact error message you see — it will help you narrow down whether the problem is a driver, a settings conflict, or corrupted network information. Common messages include "cannot connect to this network," "incorrect password," or "no internet connection even though connected to WiFi."

Forget the network and reconnect

Your computer stores connection settings for every WiFi network you have ever joined. Sometimes these settings become corrupted and prevent reconnection. On Windows, go to Settings > Network & Internet > WiFi > Manage Known Networks, find your network name, and click "Forget." On Mac, go to System Preferences > Network > WiFi, click "Advanced," find your network in the list, select it, and click the minus button.

After forgetting the network, restart your computer. Then open your WiFi list again, find your network, and reconnect by entering your password. This forces your computer to create fresh connection settings instead of using the old corrupted ones. If you do not remember your WiFi password, check the sticker on the back or bottom of your router — it usually shows the network name and password printed together.

Move closer to your router and check for interference

WiFi signals weaken with distance and are blocked by walls, metal, and water. If your computer is far from the router or separated by multiple walls, move it closer and try connecting again. This tells you whether range is the problem. If you can connect when close but not from your usual spot, you may need to reposition your router to a more central location in your home or office.

Interference from other devices can also block WiFi. Microwaves, cordless phones, baby monitors, and some wireless speakers use the same radio frequencies as WiFi and can jam the signal. If your router is next to a microwave or cordless phone base station, move it away. Bluetooth devices rarely cause problems, but if you have many Bluetooth devices running at once, try turning some off to see whether your connection improves.

Update your WiFi driver on Windows

Your computer uses a piece of software called a driver to communicate with its WiFi hardware. If the driver is outdated or corrupted, your computer may not connect even though the hardware works fine. On Windows, right-click the Start button, select "Device Manager," and look for "Network adapters." Click the arrow next to it to expand the list.

Find the entry that mentions WiFi or wireless (it often includes the word "802.11" or the name of a manufacturer like Intel or Realtek). Right-click it and select "Update driver." Choose "Search automatically for updated driver software" and let Windows search for and install the latest version. Restart your computer when finished. If Windows cannot find an update, visit the manufacturer's website (check your computer's documentation or the Device Manager entry for the brand name) and read the driver directly from there.

Check your router's WiFi settings and restart your computer

Log into your router's settings by opening a web browser and typing the router's IP address (usually 192.168.1.1 or 192.168.0.1 — check the sticker on your router). You may need to enter a username and password; these are often "admin" and "admin" or "admin" and the WiFi password. Look for a section called "Wireless," "WiFi," or "Network Settings."

Check that WiFi is enabled (not disabled), that your network name is visible (not hidden), and that the security type is set to WPA2 or WPA3 (not WEP, which is outdated). If you made any changes, save them and restart your router. Also try a full restart of your computer — not just logging out and back in, but a complete shutdown and power-on. Many connection problems clear themselves after a full restart because it resets network connections and clears temporary files.

Frequently Asked Questions

Why does my computer say "no internet connection" even though it is connected to WiFi?

Your computer is connecting to the router but the router has no internet from your service provider. Restart your modem and router as described above. If the modem's lights do not turn green or blue within a few minutes, contact your internet provider — the problem is on their end, not yours.

My computer connects but the internet is very slow. Is that a WiFi problem?

Slow speed can come from WiFi interference, distance from the router, or a problem with your internet service itself. Move closer to the router and try again. If speed improves, reposition your router. If speed stays slow even when close, restart your modem and router, then contact your internet provider to check whether they are experiencing outages or service issues in your area.

What if I see my network name but it says "cannot connect to this network"?

This usually means the password is wrong or the network settings are corrupted. Double-check that you are typing the password correctly (it is case-sensitive). If you are sure the password is right, forget the network and reconnect as described above. If that does not work, restart your router.

Can I fix this without restarting my router?

Try the software fixes first — forget the network, update your driver, and restart your computer. These solve many problems without touching the router. If those do not work, a router restart is the next step and usually fixes what software changes cannot.

My computer is very old. Could that be why it will not connect?

Older computers may use outdated WiFi standards that newer routers do not support well. Check your router settings to see whether you can enable older WiFi standards (often called "legacy mode" or "802.11b/g support"). If your router does not offer this option, you may need a newer computer or a different router that supports older standards.