Start with the simplest fixes first
Most computers that won't connect to WiFi are actually connected to the network but blocked from reaching the internet, or they've straightforward forgotten the password. Before you restart your router or call your internet provider, check three things: whether your WiFi is actually on, whether your computer sees the network in the list, and whether you've entered the correct password.
If your computer shows no WiFi networks at all, your WiFi adapter may be turned off. On Windows, press the Windows key and type "airplane mode" — if it's on, turn it off. On Mac, click the WiFi icon in the top-right corner and make sure WiFi is checked. If you see networks but yours isn't there, your router may not be broadcasting its name, or it may be too far away or blocked by walls and metal objects.
If your computer connects but has no internet, you're likely seeing a "connected, no internet" message. This is different from a connection problem and usually means your router can't reach your internet provider's equipment. That's the next section.
Key Takeaways
- Check whether WiFi is turned on in your computer's settings, and whether airplane mode is active, before assuming the connection is broken.
- If your computer connects but shows "no internet," restart your router by unplugging it for 30 seconds, then plugging it back in.
- Forgetting the network and reconnecting with the correct password solves most "won't connect" problems on computers that see the network.
- If your computer still won't connect after these steps, check whether other devices can connect — if they can't, the problem is your router or internet service, not your computer.
- Moving closer to the router or removing obstacles between your computer and router can fix weak signal problems that cause repeated disconnections.
Restart your router when your computer connects but has no internet
When your computer shows a WiFi connection but can't reach websites or services, the problem is usually between your router and your internet provider's equipment, not between your computer and router. The fastest fix is to restart your router: unplug the power cable, wait 30 seconds, and plug it back in. This forces your router to reconnect to your internet provider's modem.
While the router restarts, check whether other devices in your home can connect. If your phone, tablet, or another computer can reach the internet, your first computer's WiFi adapter may be failing, or it may have a driver problem. If no devices can connect, the problem is definitely your router or internet service, not your computer.
The restart usually takes two to three minutes. You'll see lights on the router blink and then settle into a steady pattern. If the lights don't settle or if you still have no internet after five minutes, unplug the router again and check that the cable from your modem (the device your internet provider installed) is plugged firmly into the port labeled "internet" or "WAN" on the back of your router.
Forget the network and reconnect with the correct password
If your computer sees your WiFi network but won't connect, or keeps asking for the password, the stored password is wrong or corrupted. The fix is to forget the network entirely and reconnect from scratch.
On Windows: Right-click the WiFi icon in the bottom-right corner of your screen, select "Manage known networks," find your network name, click it, and select "Forget." Then click the WiFi icon again, select your network from the list, click "Connect," and enter your password. Type slowly — passwords are case-sensitive, and spaces count.
On Mac: Click the WiFi icon in the top-right corner, select "Open Network Preferences," click "WiFi" on the left, then click "Advanced." Find your network in the list, select it, click the minus button at the bottom, and confirm the removal. Close the window, click the WiFi icon again, select your network, and enter your password.
If you don't know your password, check the sticker on the back or bottom of your router — it usually shows the network name and password. If the sticker is missing or unreadable, you can reset the router to factory settings by holding a small reset button on the back for 10 seconds, but this erases all your settings and you'll have to set it up again from the beginning.
Check your WiFi adapter and drivers on Windows
If your computer still won't connect after forgetting and reconnecting, your WiFi adapter may have a driver problem. A driver is software that lets Windows communicate with your hardware. You can check and update it without opening your computer.
Right-click the Windows Start button and select "Device Manager." Look for "Network adapters" and click the arrow next to it to expand the list. You should see an entry with "Wireless" or "WiFi" or "802.11" in the name. If there's a yellow exclamation mark next to it, the driver is broken or missing.
Right-click the wireless adapter and select "Update driver." Choose "Search automatically for updated driver software" and let Windows search. If Windows finds an update, it will install it and ask you to restart. If no update is found, right-click the adapter again, select "Uninstall device," restart your computer, and Windows will reinstall the driver automatically.
If you don't see a wireless adapter in the list at all, your WiFi hardware may have failed, or it may be disabled in your BIOS (your computer's firmware). This is rare and usually requires a technician, but you can try restarting your computer and pressing F2, F10, or Delete during startup to enter BIOS and look for a setting to enable the wireless adapter.
Move closer to your router or remove obstacles
If your computer connects but keeps dropping the connection, or if the connection is very slow, the signal may be too weak. WiFi travels through air and some materials easily, but metal, concrete, and water absorb it. A microwave oven also interferes with WiFi on the 2.4 GHz band, which is the older and slower band most routers use by default.
Move your computer closer to the router — even moving from another room to the same room usually helps. If you can't move the computer, move the router to a more central location in your home, away from metal filing cabinets, refrigerators, and microwave ovens. Routers work best when placed on a shelf or mounted on a wall, not hidden in a cabinet or closet.
If your router has two bands (2.4 GHz and 5 GHz), try connecting to the 5 GHz network instead. It's faster and less crowded, but it doesn't travel as far through walls. The network name usually has "5G" or "5GHz" at the end. If you're close to the router, 5 GHz is usually better. If you're far away or in another room, stick with 2.4 GHz.
Check whether other devices can connect
The fastest way to know whether the problem is your computer or your network is to try connecting another device. Use your phone, tablet, or a friend's laptop. If the other device connects and works normally, the problem is your computer's WiFi adapter or settings. If the other device also can't connect, the problem is your router or internet service.
If other devices can't connect either, restart your router again and check that your internet provider's modem has power and shows a steady light (not blinking or red). If the modem light is red or off, your internet service may be down. You can check your provider's website or call their support line to see whether there's an outage in your area.
If the modem is working but other devices still can't connect, your router may need a firmware update. Check the router's manual or the manufacturer's website for instructions — firmware updates are usually done through the router's settings page, which you access by typing the router's IP address (usually 192.168.1.1 or 192.168.0.1) into a web browser on a computer connected by ethernet cable.
Use an ethernet cable as a temporary fix
If your computer won't connect to WiFi but you need internet access right away, use an ethernet cable if your computer has an ethernet port. Plug one end into your router and the other into your computer. This gives you a wired connection while you troubleshoot the WiFi problem.
Most laptops don't have ethernet ports anymore, but you can buy a USB-to-ethernet adapter for $15 to $30. Plug the adapter into a USB port on your laptop, plug the ethernet cable into the adapter, and plug the other end into your router. This works on Windows and Mac.
A wired connection is also faster and more stable than WiFi, so if you use your computer for video calls, large file uploads, or online gaming, consider keeping the ethernet cable connected even after you fix the WiFi problem.
Frequently Asked Questions
Why does my computer connect to WiFi but then disconnect after a few minutes?
This usually means the signal is weak or your computer is moving in and out of range. Move closer to the router, remove obstacles between your computer and router, or try the 5 GHz band if available. If the problem happens in the same spot every time, your router may need a firmware update or your WiFi adapter may need a driver update.
My computer sees the WiFi network but says the password is wrong, even though I know it's correct.
Passwords are case-sensitive and spaces count. Check the password on the router's sticker character by character. If you're still stuck, forget the network and try entering the password again very slowly. If that doesn't work, reset your router to factory settings using the reset button on the back.
Can I fix a broken WiFi adapter without opening my computer?
You can try updating or reinstalling the driver through Device Manager, which sometimes fixes adapter problems without opening the computer. If the adapter shows a yellow exclamation mark or doesn't appear in Device Manager at all, the hardware may have failed and you'll need a technician to replace it or use a USB WiFi adapter instead.
What's the difference between 2.4 GHz and 5 GHz WiFi?
2.4 GHz is older, slower, and travels farther through walls. 5 GHz is newer, faster, and doesn't travel as far. If you're close to the router, use 5 GHz. If you're far away or in another room, use 2.4 GHz. Some routers broadcast both at the same time under different network names.
Should I restart my router every time my WiFi stops working?
Yes, restart your router first — it fixes most connection problems and takes only a few minutes. If restarting fixes the problem but it happens again the next week, your router may be overheating or failing. Try moving it to a cooler location with better airflow, or contact your internet provider about a replacement.