The quickest way to check for Bluetooth on Windows

Open the Settings app by pressing Windows key + I, then go to Bluetooth & devices on the left side. If you see a toggle switch for Bluetooth at the top of that page, your PC has Bluetooth hardware. If the page doesn't exist or shows "Bluetooth is not available on this device," your PC does not have Bluetooth built in.

On Windows 11, the Bluetooth section appears directly in Settings. On Windows 10, you may need to click Devices first, then Bluetooth & other devices on the left. Either way, the presence of a working Bluetooth toggle means the hardware is there.

If you see the toggle but it's grayed out, your Bluetooth adapter may be disabled in the BIOS or a driver is missing. This is different from not having Bluetooth at all—the hardware exists but needs to be turned on or fixed.

Key Takeaways

  • Windows Settings shows whether your PC has Bluetooth: go to Bluetooth & devices and look for an active toggle switch.
  • A grayed-out Bluetooth toggle means the hardware exists but is disabled—you can usually turn it back on in Settings or BIOS.
  • If Bluetooth does not appear in Settings at all, your PC likely has no Bluetooth adapter, though a missing driver can cause the same symptom.
  • Laptops almost always have Bluetooth; desktop PCs usually do not unless they were built in the last five years or came with it as an option.

Checking Device Manager for Bluetooth hardware

Right-click the Start button and select Device Manager. Look for a category called Bluetooth in the list. If it's there and expanded, you have Bluetooth hardware. If you see a yellow warning triangle next to the Bluetooth entry, the driver needs attention but the hardware is present.

If there is no Bluetooth category at all, scroll down to Other devices and look for anything labeled "Unknown Device" or with a question mark. This sometimes means a Bluetooth adapter is installed but the driver is missing. Right-click it and select Update driver, then choose Search automatically for updated driver software.

You can also look under Network adapters for entries that mention Bluetooth—some manufacturers list the Bluetooth adapter there instead of in its own category.

What to do if Bluetooth is disabled

If Settings shows Bluetooth but the toggle is off or grayed out, try turning it on first. Click the toggle to enable it and wait a few seconds for the system to set up the hardware.

If the toggle stays grayed out, restart your PC. Sometimes a driver fails to load on startup and a reboot fixes it. After restarting, go back to Settings and check whether the toggle is now active.

If it's still grayed out after a restart, your Bluetooth driver may need to be reinstalled. Go to Device Manager, find the Bluetooth entry, right-click it, and select Uninstall device. Then restart your PC—Windows will automatically reinstall the driver on startup. If that does not work, visit your PC manufacturer's support website and read the Bluetooth driver for your exact model.

Checking the BIOS for Bluetooth

Some PCs allow you to disable Bluetooth in the BIOS, the firmware that runs before Windows loads. If Settings says Bluetooth is not available but you believe your PC should have it, the BIOS may have it turned off.

Restart your PC and press the key that opens BIOS setup—usually Delete, F2, F10, or F12 depending on your manufacturer. The correct key often appears on the startup screen for a few seconds. Once inside BIOS, look for a section called Integrated Peripherals, Onboard Devices, or Advanced. Find an option for Bluetooth, Wireless, or the name of your Bluetooth chip (often Intel or Realtek), and make sure it is set to Enabled.

Save and exit BIOS, and Windows will restart. Go back to Settings to see whether Bluetooth now appears. Changing BIOS settings can be risky if you do not know what you are doing, so only change the Bluetooth setting and leave everything else alone.

Bluetooth on laptops versus desktop PCs

Nearly all modern laptops have Bluetooth built in. If your laptop is less than ten years old and you cannot find Bluetooth in Settings, the driver is probably missing rather than the hardware being absent. read the driver from your laptop manufacturer's support page and install it.

Desktop PCs are different. Most desktop computers do not come with Bluetooth unless you specifically ordered it as an add-on or bought a high-end gaming or business model. If your desktop has no Bluetooth, you can buy a USB Bluetooth adapter for $10 to $30 and plug it into any USB port. Windows will recognize it automatically or ask you to install a driver from the included disc or the manufacturer's website.

What to check if you still cannot find Bluetooth

If Settings shows no Bluetooth option and Device Manager shows no Bluetooth hardware, your PC does not have a Bluetooth adapter. This is normal for older desktop computers and some budget laptops.

Before giving up, check your PC's original documentation or the manufacturer's website for your exact model number. Search for the specs and look for "Bluetooth" or "wireless" in the features list. If the specs confirm Bluetooth should be there, a driver is missing and you need to read it from the manufacturer's support page.

If your PC genuinely has no Bluetooth and you need it, a USB Bluetooth adapter is the simplest solution. Plug it in, let Windows install the driver, and you will have Bluetooth within minutes. No opening the case, no technical knowledge required.

Frequently Asked Questions

Can I add Bluetooth to a desktop PC that doesn't have it?

Yes. Buy a USB Bluetooth adapter (usually $10 to $30) and plug it into any USB port on your desktop. Windows will recognize it and install the driver automatically, or you may need to read the driver from the manufacturer's website. This is much simpler than opening the case to install internal hardware.

Why does my Bluetooth toggle show as grayed out?

A grayed-out toggle usually means the Bluetooth driver is not loaded or the hardware is disabled in BIOS. Restart your PC first—this fixes the problem most of the time. If it stays grayed out, uninstall the Bluetooth driver in Device Manager and restart to let Windows reinstall it automatically.

My laptop is old—does it definitely have Bluetooth?

Most laptops from the last 15 years have Bluetooth, but not all. Check your laptop's original specs on the manufacturer's website using your model number. If the specs list Bluetooth, the driver is probably missing and you can read it. If Bluetooth is not listed in the specs, your laptop does not have the hardware.

What if Device Manager shows an unknown device with a question mark?

That unknown device might be your Bluetooth adapter with a missing driver. Right-click it and select Update driver, then choose Search automatically for updated driver software. If Windows finds a driver, it will install it and the device will be identified. If not, note the hardware ID and search for it online to find the correct driver.

Do I need Bluetooth to use wireless headphones?

Bluetooth is one way to connect wireless headphones, but not the only way. Some wireless headphones use a USB dongle instead, which does not require Bluetooth. Check your headphones' manual to see which connection method they use. If they require Bluetooth and your PC does not have it, a USB Bluetooth adapter will work.