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Bluetooth is a wireless technology that lets devices communicate with each other over short distances without needing cables or wires. The name comes from a 10th-century Danish king, Harald Bluetooth, and the technology uses radio waves to send information between devices. Windows 10, the operating system released by Microsoft in 2015, includes built-in Bluetooth support that works with most modern wireless devices.
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Bluetooth operates on a frequency of 2.4 gigahertz, which is the same frequency used by Wi-Fi networks and some cordless phones. However, Bluetooth uses a special hopping pattern that switches between different channels quickly, which reduces interference with other wireless devices. The range of Bluetooth typically extends about 30 feet in open space, though walls and obstacles can reduce this distance significantly.
Windows 10 comes with Bluetooth capabilities built into the operating system itself. However, your computer needs Bluetooth hardware to use this feature. Most modern laptops have Bluetooth built in, but many desktop computers do not. If your desktop computer doesn't have Bluetooth, you can purchase an external Bluetooth adapter that connects to a USB port. These adapters are inexpensive, usually costing between $10 and $30.
Common devices that connect via Bluetooth to Windows 10 include wireless mice, keyboards, headphones, speakers, fitness trackers, and smartphones. According to the Bluetooth Special Interest Group, over 4 billion Bluetooth devices have shipped worldwide as of recent counts. This widespread adoption means you likely have several Bluetooth devices at home or work that could pair with your computer.
Practical Takeaway: Before attempting to turn on Bluetooth, check whether your Windows 10 computer has Bluetooth hardware. You can do this by looking in Device Manager or checking your computer's manual. If your device doesn't have Bluetooth built in, you'll need to purchase an external adapter before proceeding with the steps below.
The first step in turning on Bluetooth is confirming that your Windows 10 device actually has Bluetooth hardware installed. This is crucial because you cannot turn on Bluetooth if your computer doesn't have the necessary hardware. Fortunately, checking this is straightforward and takes only a few minutes.
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One way to check for Bluetooth hardware is to look at the Settings app. Click the Windows Start button in the lower left corner of your screen, then type "Settings" and select the Settings app when it appears. Once Settings opens, click on "Devices" from the left menu. Then click on "Bluetooth & other devices" in the list. If you see a Bluetooth option with a toggle switch, your computer likely has Bluetooth hardware. If this option doesn't appear at all, your device may not have Bluetooth.
Another method is to check Device Manager, which shows all hardware connected to your computer. To open Device Manager, right-click the Windows Start button and select "Device Manager" from the menu. Look for a section called "Bluetooth" in the list. If you see this section, expand it by clicking the arrow next to it. You should see one or more Bluetooth devices listed. Common Bluetooth device names include "Bluetooth Radio," "Intel Wireless Adapter," or "Qualcomm Atheros Bluetooth." If you don't see a Bluetooth section in Device Manager, your computer doesn't have Bluetooth hardware.
You can also check your computer's documentation or manufacturer's website. Most manufacturers list Bluetooth as a specification if the device includes it. For example, a typical laptop specification sheet might state "Bluetooth 5.0" or "Bluetooth 4.2." If Bluetooth is not mentioned in the specifications, the device likely doesn't have the hardware.
If you find that your computer doesn't have Bluetooth, don't worry. External Bluetooth adapters are inexpensive and work well with Windows 10. These USB adapters connect to any available USB port and provide Bluetooth capability to your computer. Popular brands include TP-Link, Mpow, and Anker. When purchasing a Bluetooth adapter, look for one that supports the latest Bluetooth version (5.0 or higher) for better range and compatibility.
Practical Takeaway: Spend a few minutes checking whether your Windows 10 computer has Bluetooth hardware using either the Settings app or Device Manager. This confirms whether you can proceed with turning on Bluetooth or whether you need to purchase an external adapter first.
Once you've confirmed that your Windows 10 device has Bluetooth hardware, turning on Bluetooth is a simple process. There are multiple ways to do this, and you can choose the method that feels most comfortable for you. The most common method is through the Settings app, which provides the most control and visibility over your Bluetooth settings.
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To turn on Bluetooth through Settings, start by clicking the Windows Start button in the lower left corner of your screen. Type "Settings" and click on the Settings app when it appears in the search results. The Settings window will open. Look for and click on "Devices" in the left menu. Next, click on "Bluetooth & other devices." You should now see a toggle switch next to "Bluetooth" at the top of the screen. If the toggle is currently off (it will appear gray or to the left), click on it to turn Bluetooth on. The toggle should now appear blue or move to the right, indicating that Bluetooth is turned on.
Another way to turn on Bluetooth is through the Quick Settings panel. In the lower right corner of your screen, you'll see a small icon that looks like a speech bubble or information symbol. Click on this icon to open the Quick Settings panel. Look for a "Bluetooth" option. If you see it, click on it to turn Bluetooth on or off. This method is faster if you need to toggle Bluetooth on and off frequently.
Some Windows 10 computers, particularly laptops, have a physical Bluetooth button or a keyboard shortcut to turn Bluetooth on and off. Check your keyboard for a key with a Bluetooth symbol (it typically looks like a "B" with dots around it). You may need to press this key while holding down the "Fn" key at the same time. Check your computer's manual to learn which key combination activates Bluetooth on your specific model.
After turning on Bluetooth, you may see a notification or the Bluetooth icon may appear in your system tray (the area in the lower right corner of your screen). This confirms that Bluetooth is now active. However, having Bluetooth turned on doesn't mean devices are automatically connected. The next step is to pair your Bluetooth device with your computer, which is covered in the following section.
Practical Takeaway: Use the Settings app method to turn on Bluetooth, as this is the most reliable approach and works on all Windows 10 devices. After turning on Bluetooth, you should see a visible change in the toggle switch, confirming that Bluetooth is active and your computer is ready to discover and connect to Bluetooth devices.
After turning on Bluetooth, the next step is pairing your Bluetooth device with your Windows 10 computer. Pairing is the process of establishing a connection between two Bluetooth devices so they can communicate with each other. Before you begin, make sure your Bluetooth device is charged, turned on, and in pairing mode. Most Bluetooth devices enter pairing mode when you press and hold a specific button, usually for 3 to 5 seconds. Check your device's manual to learn the exact pairing process, as it varies between manufacturers.
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To pair a Bluetooth device with Windows 10, open the Settings app and go to Devices, then click on "Bluetooth & other devices." Make sure Bluetooth is turned on. Then click on the button that says "Add Bluetooth or other device." A window will appear asking what type of device you want to add. Select "Bluetooth" from the options shown. Windows will now search for nearby Bluetooth devices that are in pairing mode. This process usually takes between 10 and 30 seconds.
When Windows finds your Bluetooth device, it will appear in the list displayed on your screen. Click on your device's name to select it. Windows will then pair with the device and ask you to confirm the connection. Some devices may show a numeric code that you need to confirm or approve. Once the pairing is complete, you should see a message indicating that the device is connected
This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.