Bluetooth and Wi-Fi Drivers Missing After a “Windows 12” Upgrade? How to Fix It Safely

If your Wi-Fi and Bluetooth drivers disappeared after what you believed was an upgrade to “Windows 12,” verify the operating system first. As of September 13, 2026, Microsoft has not announced or released Windows 12. Microsoft’s current Windows release-health pages list Windows 11 versions 26H1, 25H2, and 24H2, and a Microsoft Q&A moderator stated in February 2026 that Windows 12 had not been officially announced. If an installer or download claimed to be Windows 12, treat that claim cautiously and confirm the source before installing any additional drivers or tools.

For a legitimate Windows installation, the steps below apply to Windows 11 systems where Wi-Fi, Bluetooth, or both disappear after an upgrade, feature update, driver change, or repair installation. Start with the least disruptive checks and move to deeper driver recovery only if the adapter is still missing.

For current release information, see Microsoft Windows release health. For the current Windows 12 status, see Microsoft Q&A: official Windows 12 release date.

Quick diagnosis: what exactly is missing?

1. Confirm you are actually running an official Windows 11 build

Before downloading drivers, press Win + R, type winver, and press Enter. Compare the version shown with Microsoft’s supported Windows 11 releases. On September 13, 2026, Microsoft lists Windows 11 26H1, 25H2, and 24H2 among supported client releases. Version 26H1 is designed for select new devices and is not offered as an in-place feature update to existing 24H2 or 25H2 PCs.

If your installation identifies itself as “Windows 12,” or you obtained it from an unofficial ISO, modified installer, torrent, or third-party download site, do not keep adding random driver packages to make it work. Back up important files and consider returning to an official Windows image from Microsoft or your PC manufacturer.

Action: verify the OS version first. Driver troubleshooting is much safer when you know the installed build is genuine and supported.

2. Check Device Manager before reinstalling anything

Device Manager tells you whether Windows still detects the wireless hardware. Right-click Start and select Device Manager.

• Expand Network adapters and look for the wireless network adapter.
• Expand Bluetooth and look for the Bluetooth radio or adapter.
• If either category is missing, check Other devices for an unknown controller or device with a yellow warning icon.
• If the adapter is present but disabled, enable it.
• If a device has an error, open Properties and read the Device status message before changing the driver.

Microsoft’s Bluetooth guidance specifically says that when the Bluetooth adapter is not listed under Bluetooth, you should also check Other devices. Microsoft also recommends Device Manager for updating, uninstalling, and reinstalling drivers.

Action: write down the exact adapter name or the unknown-device description before you uninstall anything. That makes it easier to find the correct OEM driver later.

Reference: Microsoft Support: Fix Bluetooth problems in Windows.

3. Install Windows Update and optional driver updates

Windows Update is the least disruptive place to look for replacement drivers. Microsoft says recommended hardware drivers can be delivered through Windows Update, while optional driver updates are not installed automatically.

Open Settings > Windows Update > Advanced options > Optional updates. If a Driver updates section appears, review it for wireless, Bluetooth, chipset, or platform drivers that match your PC. Install relevant updates and restart the computer even if Windows does not explicitly require a restart.

This method is especially useful when Windows recognizes the hardware but did not automatically restore the correct driver after an upgrade.

Tradeoff: Windows Update is convenient and generally low risk, but it may not contain the newest model-specific driver from the laptop or motherboard manufacturer. If both radios are still absent, move to the OEM driver method.

Reference: Microsoft Support: Automatically get recommended and updated hardware drivers.

4. Install the PC manufacturer’s Wi-Fi and Bluetooth drivers

If Windows cannot find a suitable driver, Microsoft recommends obtaining the latest driver from the PC manufacturer. This is often the best route after a major update because laptop makers may package wireless drivers together with chipset, power-management, or platform requirements specific to that model.

Use the support site for the company that made the PC or motherboard. Search by the exact model or serial-number family, then download the Windows 11 wireless LAN and Bluetooth packages intended for that hardware.

If the affected PC has no network connection:

1. Use another PC or a phone to reach the manufacturer’s support page.
2. Download the correct Wi-Fi and Bluetooth drivers for the exact model.
3. Copy the files to a USB drive.
4. Install the drivers on the affected PC.
5. Restart Windows.

Microsoft’s Wi-Fi troubleshooting documentation explicitly recommends downloading a backup network-adapter driver on another PC and moving it by USB before uninstalling the current driver. Its Bluetooth documentation likewise directs users to the PC manufacturer’s site when Windows cannot find a newer Bluetooth driver.

Action: prefer the PC or motherboard manufacturer over generic “driver download” websites. If the OEM publishes a chipset or platform driver that is marked as required for wireless devices, install it in the order the manufacturer specifies.

References: Microsoft Support: Fix Wi-Fi connection issues in Windows and Microsoft Support: Update Bluetooth drivers in Windows.

5. Reinstall or roll back a driver when the adapter is detected

If Device Manager still lists the Wi-Fi or Bluetooth adapter, but it stopped working immediately after an upgrade or driver change, reinstalling or rolling back the driver can be more appropriate than downloading a different package.

Reinstall the Wi-Fi driver

Microsoft recommends making sure you have a backup driver first. Then open Device Manager, expand Network adapters, right-click the wireless adapter, and choose Uninstall device. Restart Windows. Windows will attempt to reinstall the network driver automatically; if it does not, install the backup driver you saved.

Reinstall the Bluetooth driver

Open Device Manager, expand Bluetooth, right-click the Bluetooth adapter, and select Uninstall device. Restart the PC. Microsoft says Windows will attempt to reinstall the Bluetooth driver automatically. If it does not, use Action > Scan for hardware changes or install the OEM driver manually.

Roll back when the problem began after a recent driver update

Microsoft documents a Roll Back Driver option for Bluetooth adapters when a previous driver version is still available. In Device Manager, open the adapter’s Properties > Driver tab and choose Roll Back Driver if the button is active.

Tradeoff: rollback can restore a previously working driver quickly, but you lose fixes and improvements included in the newer driver. Use it when the timing clearly points to a recent driver update as the cause.

References: Microsoft Support: Update drivers through Device Manager and Microsoft Support: Update Bluetooth drivers in Windows.

6. Use troubleshooters and Network Reset only after the driver is present

If Device Manager shows a working network adapter but Wi-Fi still does not connect, Microsoft recommends starting with the automated Network and Internet troubleshooter in the Get Help app. For Bluetooth, Microsoft similarly recommends its Bluetooth troubleshooter.

These tools are most useful after the hardware is detected. A troubleshooter cannot install a model-specific OEM driver if Windows does not recognize the adapter at all.

Use Network Reset as a last networking step

Microsoft explicitly describes Network reset as a last step. In Windows 11, it is located under Settings > Network & internet > Advanced network settings > Network reset.

Network Reset removes installed network adapters and their settings, then reinstalls the adapters after restart. Microsoft warns that you may need to reinstall or reconfigure VPN clients, Hyper-V virtual switches, or other networking software afterward. It can also change network profiles to Public.

Action: use Network Reset only when the Wi-Fi adapter is installed but networking remains broken. It is not the first choice for a physically missing or unidentified wireless device.

Reference: Microsoft Support: Fix Wi-Fi connection issues in Windows.

What if both adapters are completely absent from Device Manager?

If neither Wi-Fi nor Bluetooth appears under its normal category or under Other devices, Windows may not be detecting the hardware at all. At that point, repeatedly reinstalling software drivers is unlikely to help until the device is visible to the operating system.

Try these checks:

• Restart the PC fully rather than using Sleep or Hibernate.
• Open Device Manager and use Action > Scan for hardware changes.
• Check the PC manufacturer’s BIOS/UEFI documentation to make sure integrated wireless hardware has not been disabled.
• Install current chipset and platform drivers from the manufacturer if they are listed for your exact model.
• If the wireless hardware remains undetected, contact the PC manufacturer because a firmware, hardware, or service issue may be involved.

Microsoft’s Bluetooth troubleshooting page notes that hardware malfunction is one possible reason Bluetooth can disappear. Its Wi-Fi guidance also recommends the PC manufacturer’s driver package when Windows cannot restore the adapter automatically.

Should you use third-party driver-updater utilities?

They are usually unnecessary for this problem. Microsoft’s own guidance prioritizes Windows Update, Device Manager, and the PC manufacturer’s support website. A third-party utility can make it harder to know whether the installed package actually matches your hardware and Windows build.

Recommended order: Windows Update first, then the OEM support page, then Device Manager reinstall or rollback. This keeps the driver source traceable.

When to consider repairing Windows itself

If multiple unrelated devices disappeared after an upgrade, Device Manager behaves abnormally, or driver packages fail to install even though they are correct for the model, the issue may extend beyond the wireless drivers. In that case, run the standard Windows repair tools and consider reinstalling the current Windows version through Windows Update before doing a clean installation.

Do not perform a full reset or clean install solely because the Wi-Fi button vanished. A clean install is much more disruptive than restoring the correct driver and should be reserved for cases where normal driver and Windows repair methods have failed.

Final checklist

• Confirm the installed OS is an official Windows 11 release.
• Check Network adapters, Bluetooth, and Other devices in Device Manager.
• Install Windows Update and review Optional updates for driver packages.
• Download the exact Wi-Fi and Bluetooth drivers from the PC or motherboard manufacturer.
• Reinstall or roll back the adapter driver if the hardware is detected but stopped working after an update.
• Run Network and Bluetooth troubleshooters once the drivers are present.
• Use Network Reset only as a later networking step because it removes adapter settings and may affect VPN or virtual-network software.
• If the hardware never appears in Device Manager, check firmware settings and contact the manufacturer rather than repeatedly installing random drivers.

Bottom line

There is no officially released Windows 12 to upgrade to as of September 13, 2026, so the safest response to missing Wi-Fi and Bluetooth after a supposed “Windows 12” upgrade is to verify the installation first. On a genuine Windows 11 system, the recovery path is straightforward: confirm hardware detection in Device Manager, install Windows Update and optional drivers, use the manufacturer’s model-specific packages when Windows cannot find the right driver, and reinstall or roll back the adapter only when necessary.

That sequence matters. It fixes the common software causes without immediately jumping to a reset or clean install, and it keeps every driver source tied either to Microsoft or the hardware manufacturer.