Your headphones, mouse or speaker won’t connect, and the most likely reason is that Bluetooth on the PC is switched off or missing. In Windows 11, select the Bluetooth button in Quick Settings, or go to Settings > Bluetooth & devices and turn Bluetooth on. In Windows 10, use the Bluetooth tile in Action Center, or go to Settings > Devices > Bluetooth & other devices. Below are pairing steps and the fixes for a missing switch.
Bluetooth also switches off with airplane mode, so it helps to know how to turn airplane mode off in Windows or keep Bluetooth on while it runs.
Where the Bluetooth switch lives
| Windows version | Quick toggle | Full settings page |
|---|---|---|
| Windows 11 | Quick Settings (Windows+A, or the Network, Sound or Battery icon on the taskbar) > Bluetooth | Settings > Bluetooth & devices > Bluetooth switch |
| Windows 10 | Action Center (Windows+A) > Expand > Bluetooth | Settings > Devices > Bluetooth & other devices > Bluetooth switch |
Both routes do the same thing. The quick toggle is faster for daily use; the Settings page is where you pair new devices and see what is already connected.
Turn on Bluetooth in Windows 11
From Settings
- Press Windows+I, or select Start > Settings.
- Select Bluetooth & devices in the left pane.
- Turn the Bluetooth switch to On. The page then lists any devices already paired with the PC.
From Quick Settings
- Press Windows+A, or select the Network, Sound or Battery icon at the right end of the taskbar.
- Select the Bluetooth button. When it is on, the button is highlighted and its label reads Not connected or Connected; when it is off, the label reads Off.
If there is no Bluetooth button in Quick Settings, Microsoft notes the action may need to be added. Open Quick Settings, select the edit (pencil) icon, choose Add, and pick Bluetooth. If Bluetooth is not offered there either, skip ahead to the missing switch section, because the PC may not have working Bluetooth hardware.
Mouse is the Bluetooth device? You can still get there with the keyboard. Press Windows+A, use the Tab and arrow keys to reach the Bluetooth button, and press the Spacebar or Enter. Windows+I followed by Tab and arrow keys works for the Settings page too.
Turn on Bluetooth in Windows 10
Windows 10 reached end of support on October 14, 2025. Consumer Extended Security Updates (ESU) continue until October 12, 2027, and the Bluetooth steps still work, but the labels differ from Windows 11.
From Settings
- Select Start > Settings (or press Windows+I).
- Select Devices, then Bluetooth & other devices.
- Under Bluetooth, turn the switch on.
From Action Center
- Press Windows+A, or select the Action Center icon at the far right of the taskbar.
- If you only see one row of tiles, select Expand.
- Select Bluetooth so the tile is highlighted.
No Bluetooth tile? Go to Settings > System > Notifications & actions, select Edit your quick actions, then Add > Bluetooth.
Pair headphones, a mouse or a speaker
Turning Bluetooth on only makes the PC ready. Each accessory still has to be paired once, after which it reconnects on its own when both are on and in range.
First put the accessory in pairing mode. On most headphones and speakers that means holding the power or Bluetooth button until a light flashes; mice and keyboards often have a small pairing button underneath. The product manual has the exact method.
Windows 11
- Open Quick Settings and select the arrow (Manage Bluetooth devices) on the Bluetooth button.
- Pick your accessory under New devices. If a PIN appears, confirm it matches the one on the device.
- Select Done once it shows as connected.
You can also pair from Settings > Bluetooth & devices by selecting Add device and then Bluetooth.
Windows 10
- Go to Settings > Devices > Bluetooth & other devices.
- Select Add Bluetooth or other device > Bluetooth.
- Choose the device, follow any extra instructions, and select Done.
Swift Pair
Many newer accessories support Swift Pair. With Bluetooth on, put the accessory in pairing mode near the PC and a notification offers to connect it; select Connect. The first time it appears, Windows asks whether you want these notifications, so select Yes.
Device not showing up at all? In Windows 11, go to Settings > Bluetooth & devices > Devices and set Bluetooth devices discovery to Advanced, which lists every type of nearby device rather than only common ones. Bluetooth printers and scanners are added from Printers & scanners instead; the steps to add a Bluetooth printer in Windows 11 cover that case.
Does this PC have Bluetooth at all?
Most laptops ship with Bluetooth. Desktops often don’t, unless the motherboard or Wi-Fi card includes it. Device Manager answers the question in a few seconds.
- Right-click Start and select Device Manager. (Other ways to open Device Manager in Windows 11 work too.)
- Look for a Bluetooth category and expand it. An adapter listed there means the hardware exists.
- If the adapter has a yellow warning icon, Windows sees the hardware but the driver is missing or broken.
- If the adapter icon has a small down arrow, it is disabled. Right-click it and select Enable device.
- If there is no Bluetooth category, check Network adapters and Other devices for anything with Bluetooth in its name or an unknown device. If nothing turns up, the PC most likely has no Bluetooth hardware.
Bluetooth switch missing or not working: which fix to try
Microsoft’s explanation for a missing Bluetooth setting is simple: the device either lacks Bluetooth hardware or doesn’t have the drivers installed. Match what you see to the fix, and work down the list from the quickest step.
| What you see | Try this first |
|---|---|
| Bluetooth button is greyed out or won’t stay on | Turn off Airplane mode in Quick Settings (Windows 11) or Action Center (Windows 10) |
| Switch vanished after it used to work | Do a full shutdown (below), then check for optional driver updates |
| Adapter shows a down arrow in Device Manager | Right-click it and select Enable device |
| Adapter shows a yellow warning icon | Update or reinstall the Bluetooth driver |
| No Bluetooth anywhere in Device Manager | Install the PC maker’s driver; if there is none, add a USB Bluetooth adapter |
| Bluetooth drops after sleep or restart | Check the adapter’s power-saving setting and the Bluetooth Support Service |
Turn Airplane mode off
Airplane mode switches off all wireless radios, Bluetooth included. Press Windows+A and make sure the Airplane mode button isn’t highlighted. Some laptops also have a wireless key (often an Fn key combination with an antenna icon) that toggles Airplane mode.
Do a full shutdown
A normal restart may not reset the Bluetooth hardware, so Microsoft recommends a full shutdown when the switch disappears.
- Hold down Shift.
- While holding it, select Start > Power > Shut down.
- Wait about a minute, then turn the PC back on. Use Shut down here, not Restart.
Run the Bluetooth troubleshooter
In Windows 11, go to Start > Settings > System > Troubleshoot > Other troubleshooters and select Run next to Bluetooth. Microsoft also routes this through the Get Help app, which walks through the same checks. Microsoft’s Bluetooth troubleshooting page lists the full sequence.
Check optional updates and firmware
Windows Update sometimes offers a newer Bluetooth driver as an optional download. In Windows 11, go to Settings > Windows Update > Advanced options > Optional updates, select any Bluetooth or wireless driver listed, and choose Download & install. It is also worth checking the PC maker’s support site for a BIOS or UEFI firmware update, since firmware can control whether the built-in radio is enabled.
Check the Bluetooth Support Service
This step isn’t in Microsoft’s Bluetooth troubleshooting pages, but it is a common check when Bluetooth stops working after a restart. Press Windows+R, type services.msc and press Enter. Find Bluetooth Support Service, double-click it, and make sure its startup type isn’t set to Disabled; if it is stopped, select Start.
Stop Windows from powering the adapter down
If Bluetooth disappears after sleep, open Device Manager, double-click the Bluetooth adapter, and look for a Power Management tab. Clearing the option that lets the computer turn the device off to save power keeps the radio awake. Not every adapter shows this tab.
Install or reinstall the Bluetooth driver
Windows has no separate Bluetooth program to download. Bluetooth support is built in; what a PC sometimes lacks is the driver for its specific adapter.
Update the driver
- Open Device Manager and expand Bluetooth.
- Right-click the adapter. Its name may include the word “radio.”
- Select Update driver > Search automatically for drivers and follow the prompts.
For other routes, such as Windows Update and the PC maker’s own tools, see how to update drivers in Windows 11.
Reinstall the driver
- In Device Manager, right-click the Bluetooth adapter and select Uninstall device > Uninstall.
- Shut down the PC, wait a moment, and turn it back on. Windows tries to reinstall the driver on startup.
- If the adapter doesn’t come back, open Device Manager and select Action > Scan for hardware changes.
The same steps apply on older systems; there is a separate walkthrough to reinstall the Bluetooth driver on Windows 10 with more detail.
Get the driver from the PC maker
If Windows can’t find a driver, go to the support page for your laptop or motherboard, enter the model or serial number, and download the Bluetooth driver for your Windows version. Many makers package Bluetooth together with the Wi-Fi driver, so the download may be labeled wireless or WLAN. Run the installer, restart, and check Settings again.
Add Bluetooth to a PC that doesn’t have it
When Device Manager shows no Bluetooth hardware and the PC maker offers no Bluetooth driver, the PC needs an adapter. Microsoft confirms a USB Bluetooth adapter can add Bluetooth to a Windows PC.
- Plug a USB Bluetooth adapter into a free USB port. A port on the back of a desktop, or a short USB extension cable, can improve range if the PC sits under a desk.
- Wait for Windows to finish setting it up. Most adapters install a driver automatically; if not, install the driver from the adapter maker’s site.
- Turn Bluetooth on in Settings or Quick Settings and pair your accessories as above.
A current Bluetooth 5.x adapter is a sensible choice for range and audio quality. Desktop owners comfortable opening the case can instead fit an internal Wi-Fi and Bluetooth card, which adds both radios at once.
Turn Bluetooth off or remove a device
Use the same button or switch to turn Bluetooth off. On a laptop this saves a little battery, and it stops accessories from reconnecting when you don’t want them to. Turning Bluetooth off and back on is also a quick reset when a connection misbehaves.
To forget an accessory in Windows 11, go to Settings > Bluetooth & devices > Devices, select More options (the three dots) next to it, then Remove device > Yes. In Windows 10, select the device on the Bluetooth & other devices page and choose Remove device. Removing and pairing again often fixes headphones that connect but play no sound.
A headset that sounds thin or muffled during calls is a different issue: while its microphone is in use, Bluetooth audio can drop to a lower-quality mode. For music or video, pick the headset’s stereo output (or use a separate microphone) in sound settings; the walkthrough on how to set up 5.1 surround sound on a Windows PC shows where the Windows output device settings live.
Bluetooth questions
Is there a keyboard shortcut that turns Bluetooth on?
Windows has no single key for Bluetooth. Windows+A opens the panel that holds the Bluetooth button, and some laptops have a wireless key that toggles all radios together.
Do I need to download Bluetooth for Windows 11?
No. Bluetooth support is part of Windows 11 and Windows 10. You only need a driver for your particular adapter, which Windows Update or the PC maker provides.
Can two Bluetooth headphones play at the same time?
Usually not. Windows sends audio to one Bluetooth output device at a time by default. Microsoft has been rolling out a Shared audio (preview) option in Quick Settings that can play to two Bluetooth LE Audio accessories at once, but only on select newer PCs with compatible accessories. If you don’t see that button, two people sharing a movie need a wired splitter or headphones with their own sharing feature.
How can I tell which Bluetooth version the PC has?
In Device Manager, expand Bluetooth, double-click the adapter, and open the Advanced tab if it has one. The firmware line shows an LMP (Link Manager Protocol) number, which corresponds to a Bluetooth version; the adapter or PC maker’s specifications confirm which. Not every adapter shows this tab.
Why does the Bluetooth switch keep turning off by itself?
The usual causes are Airplane mode coming on, power saving on the adapter, or an outdated driver. Work through the fix table above, starting with the full shutdown and a driver update.
Once the switch stays on and your accessory is paired, it should reconnect on its own each time you power it up near the PC. If it stops doing that, removing it and pairing again is the fastest fix to try first.
Kermit Matthews runs Live2Tech from just outside Philadelphia. He is an IT specialist with over 20 years of experience, from a university help desk to small-business IT, IT management and his own consulting practice, and has written tech guides full time since 2020. Steps are checked against the current software on a real device or the maker’s official documentation. More about Kermit.