The simplest way to connect your PC to WiFi

Your PC can connect to WiFi in three ways: built-in WiFi that came with the computer, a USB WiFi adapter you plug in, or an ethernet cable connected to your router. Most newer PCs have built-in WiFi already. If yours does not, a USB adapter costs $15 to $40 and works when ready — no installation needed beyond plugging it in.

To check whether your PC already has WiFi, look for a WiFi icon in the bottom right corner of your screen (Windows) or top right (Mac). If you see it, your PC has WiFi built in. If you do not see it, your PC likely needs an adapter.

Once you know what you have, connecting takes less than two minutes. The steps are nearly identical whether you are using built-in WiFi or an adapter.

Key Takeaways

  • Most PCs made in the last five years have WiFi built in — check the bottom right corner of your screen for a WiFi icon to confirm.
  • If your PC has no WiFi icon, a USB WiFi adapter ($15 to $40) plugs into any USB port and works without installation.
  • To connect, click the WiFi icon, select your router's network name, enter the password, and wait for the "connected" status.
  • If your PC does not find your router, restart both the PC and router, then try again — this solves most connection problems.
  • Ethernet cable is faster and more stable than WiFi if your router is near your PC, though it requires a cable run across the room.

Connecting a PC with built-in WiFi

Click the WiFi icon in the bottom right corner of your screen (the icon looks like curved lines or a fan). A list of available networks appears. Find your router's network name — this is the name you chose when you set up your router, or the default name that came with it.

Click your router's network name. A box appears asking for your WiFi password. This is the password you created during router setup, not your computer password. Type it exactly as you set it (capitals and symbols matter), then click "Connect" or press Enter.

Wait 10 to 15 seconds. The WiFi icon changes to show you are connected — it fills in solid or shows a checkmark. You are now online. If the connection fails, the screen tells you the password is incorrect. Double-check your password and try again.

Using a USB WiFi adapter if your PC has no built-in WiFi

Plug the USB adapter into any open USB port on your PC. Windows or Mac recognizes it when ready — you do not need to install software first, though some adapters include optional software you can install later for advanced settings.

A WiFi icon appears in the bottom right corner (Windows) or top right (Mac) within 10 seconds. Follow the same steps as above: click the icon, select your router's network name, enter the password, and wait for the connected status.

If the icon does not appear after 30 seconds, restart your PC. The adapter will work after the restart. Some older adapters require a driver (software) to work — the box or manual will say so. If yours does, visit the manufacturer's website, read the driver for your operating system, install it, restart, and then plug in the adapter.

What to do if your PC does not find your router

First, make sure your router is powered on and the lights are on. If the lights are off or blinking red, unplug the router, wait 10 seconds, and plug it back in. Wait another 30 seconds for it to fully restart.

Next, restart your PC. Click the Windows logo or Apple menu, select "Shut down" or "Restart", and wait for the PC to fully power off and back on. This takes two to three minutes.

Once your PC restarts, click the WiFi icon again. Your router's network name should now appear in the list. If it still does not appear, move your PC closer to the router — thick walls and distance reduce the signal. If it appears once you move closer, your router's signal may not reach that far, and you may need to move the router or use an ethernet cable instead.

Using an ethernet cable instead of WiFi

An ethernet cable plugs directly into your router and your PC, creating a wired connection that is faster and more stable than WiFi. If your PC has an ethernet port (a rectangular slot slightly larger than a USB port), you can use this method.

Plug one end of the ethernet cable into the port on your router labeled "Ethernet" or "LAN" (usually port 1, 2, 3, or 4). Plug the other end into the ethernet port on your PC. Windows and Mac recognize the connection when ready — no password needed.

Ethernet is the best choice if your router is in the same room as your PC, because it is faster and never drops the connection. The downside is the cable must run across the floor or along the wall. If that is not practical, WiFi is your only option.

Checking your connection speed and signal strength

To see how strong your WiFi signal is, click the WiFi icon. The network list shows your connected network with signal bars next to it — more bars mean stronger signal. If you see only one or two bars, you are far from the router or something is blocking the signal.

To see your actual internet speed, open a web browser and search for "speed test". Click any result (Speedtest.net is common), and it measures how fast your connection is. If you are getting much slower speeds than your internet plan promises, restart your router and PC, then test again. If speeds are still slow, move closer to the router or switch to ethernet.

Fixing WiFi that keeps disconnecting

If your PC connects but then loses the connection every few minutes, restart your router first. Unplug it, wait 10 seconds, and plug it back in. Wait 30 seconds for it to fully restart, then reconnect your PC.

If disconnections continue, the problem is usually distance or interference. Move your PC closer to the router, or move the router away from microwaves, cordless phones, and thick walls — these interfere with WiFi signals. If you cannot move the router, an ethernet cable is your most reliable option.

If only your PC disconnects while other devices stay connected, restart your PC. If that does not work, forget the network and reconnect: click the WiFi icon, right-click your network name, select "Forget", then reconnect by clicking the network name and entering your password again.

Frequently Asked Questions

How do I know if my PC has WiFi built in?

Look for a WiFi icon in the bottom right corner of your screen (Windows) or top right (Mac). The icon looks like curved lines or a fan. If you see it, your PC has WiFi. If you do not see it, your PC needs a USB adapter.

What is the difference between WiFi and ethernet?

Ethernet is a cable that plugs directly into your router and PC — it is faster and never drops the connection. WiFi is wireless and works from anywhere in your home, but it is slower and can disconnect if you are far from the router. Use ethernet if the router is near your PC; use WiFi if you need to move around.

My PC connects to WiFi but the internet does not work. What do I do?

Restart your router: unplug it, wait 10 seconds, and plug it back in. Wait 30 seconds, then try opening a website. If that does not work, restart your PC. If the internet still does not work, contact your internet provider — the problem is likely with your service, not your PC's connection.

Can I use WiFi and ethernet at the same time?

Your PC can connect to both, but it will use only one at a time. It automatically chooses ethernet if both are connected, because it is faster. If you want to use WiFi instead, unplug the ethernet cable.

Why is my WiFi password not working?

WiFi passwords are case-sensitive, meaning capital letters and lowercase letters are different. Check that you are typing it exactly as you set it up — including capitals, numbers, and symbols. If you forgot the password, restart your router and look for a sticker on the back or bottom with the default password, or check your router's manual.