Check whether your PC has WiFi built in

Not every desktop computer has WiFi hardware. Many older desktops and some budget models come with only an Ethernet port — the cable jack that looks like a thick phone connector. If your PC has never had WiFi before, you may need to add it.

The easiest way to check is to look at your PC's physical ports on the back or side. If you see a small rectangular port labeled Ethernet or RJ-45, but no obvious WiFi antenna or indicator light, your machine likely does not have WiFi built in. Laptops almost always have WiFi, but some older or very compact desktops do not.

If your PC does not have WiFi hardware, you have two options: buy a USB WiFi adapter (a small device that plugs into a USB port) or use an Ethernet cable to connect directly to your router. A USB adapter costs between $15 and $40 and works when ready after you plug it in and install any drivers Windows asks for.

Key Takeaways

  • Most laptops and newer desktops have WiFi built in, but you can confirm by checking for a WiFi icon in the system tray or looking for an antenna symbol on your PC.
  • If your PC has WiFi hardware, open Settings, go to Network & Internet, and click the WiFi toggle to turn it on.
  • After you turn WiFi on, your PC will scan for nearby networks — select your router's name and enter the password to connect.
  • If your PC does not have WiFi, a USB WiFi adapter is the cheapest solution and requires no tools to install.
  • Once connected, Windows will remember your network and reconnect automatically the next time you start your PC.

Turn on WiFi in Windows Settings

If your PC has WiFi hardware, the fastest way to turn it on is through Windows Settings. Click the Start button in the bottom left corner, then type "Settings" and press Enter. This opens the Settings app.

Once Settings is open, click Network & Internet on the left side. You will see a list of connection options. Click WiFi to expand that section. At the top of the WiFi panel, you will see a toggle switch. If it is gray or shows "Off", click it to turn WiFi on. The toggle will turn blue and show "On".

Your PC will now scan for nearby wireless networks. This takes a few seconds. You will see a list of network names (called SSIDs) appear below the toggle. Look for your router's name — this is usually printed on a sticker on the router itself, or you may have named it when you first set up your internet.

Connect to your WiFi network

Once you see your network name in the list, click on it. A box will appear asking for your WiFi password. This is not your internet bill password — it is the password you created when you set up your router, or the default password printed on the router's sticker.

Type the password carefully. Passwords are case-sensitive, meaning capital letters and lowercase letters are different. If you are not sure of the password, you can check it on the router itself or in your router's settings page (usually accessible by typing your router's IP address into a web browser — the address is printed on the router).

After you enter the password, click Next or Connect. Windows will attempt to connect. This usually takes 10 to 30 seconds. Once connected, you will see "Connected" appear next to your network name in the WiFi list, and the WiFi icon in the system tray (bottom right corner) will show a filled signal strength indicator instead of an X.

Use the physical WiFi button if your PC has one

Some laptops and desktop PCs have a physical WiFi button or a keyboard shortcut to turn WiFi on and off. This button is usually on the side or front of a laptop, or it may be a key combination like Fn + F2 or Fn + F12 (check your PC's manual or the keyboard for a WiFi symbol).

If your PC has a physical WiFi button and it is currently off, the WiFi icon in the system tray will show an X or a crossed-out antenna. Press the button or key combination to toggle WiFi on. The icon will change to show signal strength bars. After that, follow the steps above to connect to your network through Settings.

Troubleshoot if WiFi does not appear in Settings

If you turned on the WiFi toggle but no networks appear in the list, or if the toggle is grayed out and will not turn on, your WiFi hardware may be disabled or not recognized by Windows.

First, restart your PC. Many connection problems clear up after a restart. If that does not work, check the Device Manager to see if Windows recognizes your WiFi adapter. Press the Windows key and type "Device Manager", then press Enter. Look for a section called Network adapters. Click the arrow next to it to expand the list. If you see an entry with a yellow exclamation mark or a down arrow, right-click it and select Enable device.

If you do not see any network adapter listed, or if you see one labeled "Unknown Device", your PC may need a driver — software that tells Windows how to use the hardware. Visit your PC manufacturer's support website, enter your model number, and read the WiFi driver for your operating system. Run the installer and restart your PC.

Check your router if you cannot see your network name

If your WiFi is turned on but you do not see your router's network name in the list, the problem is usually with the router, not your PC. First, make sure your router is powered on — there should be lights on the front or back. If the lights are off, plug it in and wait 2 to 3 minutes for it to start up.

If the router is on but you still do not see your network, the router may have WiFi disabled. Look for a WiFi button on the router itself and press it, or log into the router's settings page (usually by typing 192.168.1.1 or 192.168.0.1 into a web browser) and enable WiFi there. Your router's manual or the sticker on the back will have the login details.

If you have tried these steps and still cannot connect, restart the router by unplugging it for 30 seconds, then plugging it back in. Wait for all the lights to stabilize before trying to connect again.

Reconnect automatically after restart

Once you have connected to your WiFi network, Windows saves the network name and password. The next time you start your PC, it will automatically search for that network and reconnect without asking you to enter the password again.

If you want to remove a saved network — for example, if you no longer use that WiFi — go back to Settings, click Network & Internet, then WiFi, then Manage known networks. Find the network you want to forget, click it, and select Forget. Your PC will no longer reconnect to it automatically.

Frequently Asked Questions

Why does my PC show WiFi is on but I cannot connect to the internet?

Your PC may be connected to the network but not have internet access. Check that your router itself is connected to your modem and that the modem has power. Restart both devices by unplugging them for 30 seconds. If the problem continues, contact your internet provider — the issue is likely with your modem or service, not your PC.

Can I use WiFi and Ethernet at the same time?

Yes, but Windows will use only one connection at a time. It automatically prioritizes Ethernet over WiFi because a wired connection is usually faster and more stable. If you want to use WiFi instead, disconnect the Ethernet cable or disable the Ethernet connection in Settings.

What if I forgot my WiFi password?

You can find your password on the sticker attached to your router, or by logging into your router's settings page (the address is on the sticker). If you changed the password and cannot remember it, you can reset the router to factory defaults by holding down the reset button for 10 seconds, but this will erase all your settings.

Does turning on WiFi drain my PC's battery?

WiFi uses some power, but the difference is small on a desktop. On a laptop, WiFi uses noticeably less power than running the screen at full brightness. If battery life is a concern, you can turn WiFi off when you are not using it through the same toggle in Settings.

Why does my PC keep disconnecting from WiFi?

This usually means your PC is too far from the router or there is interference from other devices. Move closer to the router or move the router away from microwaves, cordless phones, and metal objects. If the problem continues, update your WiFi driver through Device Manager or your PC manufacturer's website.