Why Your Windows 10 PC Lost Bluetooth and How to Get It Back

Bluetooth disappeared from your PC because the driver crashed, the service stopped running, or the adapter itself disconnected

When Bluetooth vanishes suddenly, the device itself usually still works—Windows just stopped talking to it. The most common culprits are a driver that needs restarting, a Windows service that turned off, or a USB adapter that came loose. Less often, a Windows update broke the driver, or your PC's Bluetooth radio physically disconnected inside the machine.

The fastest way to know which problem you have is to check the Device Manager and the Settings app. If you see a yellow exclamation mark next to Bluetooth in Device Manager, the driver is broken. If Bluetooth doesn't appear in Device Manager at all, the adapter may be unplugged or the service isn't running. If Device Manager shows Bluetooth fine but Settings shows no devices, the Bluetooth service stopped.

Key Takeaways

Check Device Manager first—a yellow warning mark means the driver needs reinstalling, while a missing entry means the adapter is disconnected or disabled.
Restart the Bluetooth Support Service in Services.msc; this fixes the problem in roughly half of sudden Bluetooth losses.
If a Windows update arrived recently, rolling back or reinstalling the Bluetooth driver often restores the connection.
For USB Bluetooth adapters, unplug and replug the device, then restart your PC to force Windows to recognize it again.
If Bluetooth still does not appear after these steps, the adapter may be physically disconnected inside your PC and requires opening the case.

Check Device Manager to see if Windows recognizes the adapter

Open Device Manager by right-clicking the Start button and selecting Device Manager, or by typing "Device Manager" into the search box. Look for a section called Bluetooth. If you see it and there is no warning icon, Windows recognizes the adapter. If you see a yellow exclamation mark or a down arrow, the driver is broken or disabled. If Bluetooth does not appear at all, the adapter is either unplugged or not detected by your PC.

If Bluetooth appears with a yellow mark, right-click it and select "Update driver." Choose "Search automatically for updated driver software." Windows will read and install the latest version. Restart your PC when finished. If the yellow mark returns after restart, the driver file itself may be corrupted—in that case, uninstall the device (right-click, select Uninstall device), restart your PC, and Windows will reinstall it from scratch.

If Bluetooth does not appear in Device Manager at all and you have a USB adapter, unplug it from the USB port, wait 10 seconds, and plug it back in. Restart your PC. If you have built-in Bluetooth (no external adapter), the radio may be disabled in BIOS or physically disconnected inside the case—see the section below on built-in Bluetooth.

Restart the Bluetooth Support Service

Windows runs Bluetooth through a background service that can stop without warning. Restarting it often brings Bluetooth back when ready. Open the Services app by typing "Services" into the search box and pressing Enter. Scroll down to find "Bluetooth Support Service." Right-click it and select Restart.

If the service is not running at all (the status column is blank), right-click it, select Start, and then right-click again and select Properties. In the Startup type dropdown, select "Automatic" so the service starts every time you boot. Click explore, then OK. Restart your PC to confirm Bluetooth is back.

Reinstall the Bluetooth driver if a recent Windows update broke it

If Bluetooth worked fine until a Windows update arrived, the update likely replaced your Bluetooth driver with a broken version. Open Device Manager, find Bluetooth, right-click it, and select "Uninstall device." Check the box that says "Attempt to remove the driver software for this device" and click Uninstall. Restart your PC.

When your PC restarts, Windows will reinstall the driver automatically. If it installs the same broken version, you can roll back the driver instead. Open Device Manager, right-click Bluetooth, select Properties, go to the Driver tab, and click "Roll Back Driver." This restores the version that worked before the update. If no rollback option appears, the driver has not been updated recently and this is not the problem.

If rolling back does not work, you can also read the driver directly from your PC manufacturer's support website. Search for your model number and "Bluetooth driver" on their site, read the file, and run the installer. This bypasses Windows Update and installs the manufacturer's tested version.

Check if Bluetooth is disabled in BIOS or by a hardware switch

Some PCs have a physical switch or keyboard shortcut that turns Bluetooth off. Check your keyboard for a key with a Bluetooth symbol (usually a stylized "B" or antenna icon) and press it, or look for a Fn key combination that toggles wireless. On many laptops, this is Fn + F2 or Fn + F5. If you see a light turn on, Bluetooth is re-enabled.

If your PC has built-in Bluetooth and it does not appear in Device Manager even after restart, it may be disabled in BIOS. Restart your PC and enter BIOS by pressing Delete, F2, or F12 during startup (the key varies by manufacturer—watch the boot screen for the prompt). Look for a section called Integrated Peripherals, Onboard Devices, or similar. Find Bluetooth or Wireless and set it to Enabled. Save and exit.

Reseat the internal Bluetooth module if your PC has built-in Bluetooth

If Bluetooth does not appear in Device Manager, BIOS shows it enabled, and you have already restarted, the internal Bluetooth module may have come loose. This requires opening your PC's case. Shut down completely, unplug the power cable, and wait 30 seconds. Open the case according to your PC's manual (usually a few screws on the back or side).

Look for a small card or module labeled Bluetooth or Wireless, usually near the back of the PC. It will have a thin cable attached. Gently pull the cable connector straight out, wait 5 seconds, and push it back in until you hear a click. Close the case, plug in power, and restart. Windows should detect the module again.

If you cannot find the module or are uncomfortable opening your PC, contact the manufacturer's support line or take it to a repair shop. Opening the case yourself may void your warranty.

Disable and re-enable Bluetooth in Settings

Sometimes toggling Bluetooth off and on in Windows Settings forces the system to reconnect properly. Open Settings by pressing Windows key + I. Go to Devices, then Bluetooth & other devices. Toggle the Bluetooth switch off, wait 10 seconds, and toggle it back on. Wait another 10 seconds for the radio to initialize.

If Bluetooth does not appear in Settings at all, this means Windows does not see the adapter—go back to Device Manager and follow the steps above. If Bluetooth appears in Settings but shows no devices, the service may still be stopped. Return to Services.msc and restart the Bluetooth Support Service again.

Frequently Asked Questions

Can a Windows 10 update permanently break Bluetooth?

No, but an update can install a driver that does not work with your specific adapter. Rolling back the driver or reinstalling it from your manufacturer's website restores function. If neither works, the update may have exposed a hardware problem that was already present.

Why does Bluetooth disappear only sometimes?

Intermittent Bluetooth loss usually means the driver is unstable or the adapter is overheating. Try updating the driver first. If it keeps happening, the adapter itself may be failing and may need replacement.

Will resetting Windows fix Bluetooth?

A full reset will restore Bluetooth if the driver or service is corrupted, but it will also erase your files and programs. Try the steps above first—they fix the problem in most cases without losing anything.

What if Bluetooth works for a few minutes then stops?

This usually means the adapter is overheating or the driver is crashing. Make sure your PC has good airflow and is not in a hot room. Update the driver and restart the Bluetooth Support Service. If it keeps happening, the adapter may be failing.

Can I use a USB Bluetooth adapter if built-in Bluetooth is broken?

Yes. Plug a USB adapter into any open USB port and Windows will install the driver automatically. You can then disable the broken built-in Bluetooth in Device Manager so Windows does not try to use it.

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.