Scroll down to the Additional options section and click . Expand the Driver updates dropdown list.
Windows Update can sometimes find drivers for unknown hardware.
A paper looking at the ACPI\FNBT0000 driver fix involves analyzing a specific Radio Button HID Mini-driver used primarily for Virtual Keyboard Airplane Mode functionality on older Intel-based hardware. Microsoft Update Catalog
In 90% of cases, the fix is simple: . In the remaining 10%, a BIOS reset or reinstall of Windows without generic drivers resolves the issue. acpi fnbt0000 driver fix
Since this is a specific hardware ID, Windows Update may not always find it automatically.
Select your current operating system (Windows 10 or Windows 11). Locate and download the following software categories:
The error does not appear out of nowhere. It is typically triggered by: Scroll down to the Additional options section and click
The ACPI (Advanced Configuration and Power Interface) is responsible for how your hardware and operating system talk to each other regarding power and configuration. The specific FNBT0000 ID is most commonly associated with:
Locate the device with the yellow exclamation mark (usually under "Other devices" or "Unknown devices"). Right-click and select Update driver . Choose Search automatically for drivers .
Look for an .inf file associated with Fintek, SuperIO, or Hardware Monitor, select it, and click to install. Step 3: Run Windows Optional Updates A paper looking at the ACPI\FNBT0000 driver fix
If any (like the ECO button or Wifi switch) are currently broken.
your computer. Windows will attempt to automatically find and reinstall the correct driver upon reboot. 2. Manual Update via Microsoft Update Catalog
Because this is a proprietary ACPI device, generic driver updater tools or Windows Update will rarely find the correct file. The definitive solution is installing the Lenovo Energy Management software tailored for your machine. Method A: Use Lenovo Vantage