The quickest way to turn Bluetooth on

On Windows, open Settings, select Devices, then Bluetooth & devices, and toggle the Bluetooth switch to On. On Mac, click the Apple menu, go to System Settings, select Bluetooth, and make sure it shows On. Both take about 10 seconds once you know where to look.

If you do not see a Bluetooth option in either place, your computer either does not have Bluetooth hardware or the driver is missing. Most laptops made in the last ten years have it built in; most desktop computers do not unless you added a USB adapter.

Key Takeaways

  • Windows users find the Bluetooth toggle under Settings > Devices > Bluetooth & devices.
  • Mac users turn Bluetooth on through System Settings > Bluetooth.
  • Some computers need a USB Bluetooth adapter if they lack built-in hardware.
  • Once Bluetooth is on, your computer will show nearby devices ready to connect.

Windows: Step-by-step

Press the Windows key or click the Start button in the bottom left corner. Type Settings and open the Settings app. Once inside, look for Devices on the left sidebar or in the main menu.

Click Devices, then select Bluetooth & devices from the submenu. You will see a toggle switch next to Bluetooth. Click it to turn Bluetooth on. The switch will turn blue and show On. Your computer will now search for nearby Bluetooth devices like headphones, speakers, or mice.

If the Bluetooth option does not appear at all, your computer may not have Bluetooth hardware. Check your computer's specifications or look for a physical Bluetooth button on your keyboard — some laptops have a dedicated key with a Bluetooth symbol.

Mac: Step-by-step

Click the Apple menu in the top left corner of your screen. Select System Settings (or System Preferences on older versions). In the sidebar, find and click Bluetooth.

You will see the Bluetooth status at the top. If it says Off, click the toggle or button to turn it on. Once on, it will show Bluetooth: On and display any nearby devices below. Your Mac will remain discoverable to other Bluetooth devices while this is on.

On some older Macs, you may need to click the Bluetooth icon in the menu bar at the top right instead. Look for a small icon that looks like a stylized B or a Bluetooth symbol, click it, and select Turn Bluetooth On.

What to do if Bluetooth does not show up

If you cannot find Bluetooth in Settings on Windows, your computer likely does not have a Bluetooth chip. This is common on older desktops and some budget laptops. The solution is a USB Bluetooth adapter, which plugs into any USB port and adds Bluetooth to your computer. These cost between $10 and $30 and work with both Windows and Mac.

After plugging in a USB adapter, Windows or Mac will usually recognize it automatically and install the necessary driver. Wait a few seconds, then check Settings again — Bluetooth should now appear. If it does not, restart your computer and try again.

On Windows, you can also check Device Manager to see if Bluetooth hardware is listed. Press Windows key + X and select Device Manager. Look for Bluetooth in the list. If you see it with a yellow warning symbol, the driver may need updating — right-click it and select Update driver.

Connecting a device once Bluetooth is on

Once Bluetooth is on, your computer will show a list of nearby devices. On Windows, this list appears in the Bluetooth & devices settings page. On Mac, it appears in the Bluetooth menu. Look for the device you want to connect — usually a headset, speaker, or mouse — and click it.

Some devices will connect when ready. Others will ask for a PIN or confirmation on both the device and your computer. Follow the prompts on your screen. Once connected, the device will show as Connected next to its name, and you can use it right away.

If a device does not appear in the list, make sure it is turned on and in pairing mode. Most Bluetooth devices have a button you hold for a few seconds to make them discoverable. Check the device's manual if you are not sure how to enter pairing mode.

Turning Bluetooth off when you are done

To save battery life, turn Bluetooth off when you are not using it. On Windows, go back to Settings > Devices > Bluetooth & devices and toggle Bluetooth to Off. On Mac, go to System Settings > Bluetooth and toggle it off, or click the Bluetooth icon in the menu bar and select Turn Bluetooth Off.

Turning Bluetooth off does not disconnect your devices permanently — they will reconnect automatically the next time you turn Bluetooth back on, as long as they are in range and powered on.

Frequently Asked Questions

Why does my computer not find my Bluetooth device?

Make sure the device is turned on and in pairing mode — usually by holding a button on the device for three to five seconds until a light blinks. Also check that Bluetooth is on in your computer's settings. If the device still does not appear, restart both the device and your computer, then try again.

Can I use Bluetooth on a desktop computer?

Most desktop computers do not have built-in Bluetooth. You can add it with a USB Bluetooth adapter, which plugs into any USB port and costs $10 to $30. Once plugged in, it works the same way as built-in Bluetooth on a laptop.

Does turning Bluetooth on drain my computer's battery?

Yes, Bluetooth uses battery power, though the drain is usually small on laptops. If you want to extend battery life, turn Bluetooth off when you are not using wireless devices. Turning it off does not affect your internet connection or other functions.

What if Bluetooth turns off by itself?

On Windows, check Settings > Devices > Bluetooth & devices to see if a power-saving setting is turning it off. On Mac, this is less common but can happen if your computer is in low-power mode. Disable low-power mode and Bluetooth should stay on.