If the official driver installer fails or you cannot find it, manually point Windows to the correct driver.
When you see a yellow exclamation mark next to in Device Manager, it usually means one of the following:
Windows will detect the .inf file and install the driver automatically. Troubleshooting Persistent Issues
Ignore it, disable it, or hunt down your laptop's exact Control Interface driver from the OEM's support page for your specific model . But if Bluetooth and airplane mode toggles work without it? Walk away. Some ACPI ghosts aren't worth exorcising. acpi fnbt0000 0 driver windows 10
Before you can fix the error, you must confirm that the "ACPI FNBT0000" device is the one causing the problem. Here’s how:
A misconfigured BIOS can cause the Fn key device to be presented incorrectly.
As a temporary fix for power management issues related to ACPI, you can uninstall the Microsoft ACPI-Compliant Control Method Battery driver and restart your PC. If the official driver installer fails or you
Open the downloaded .cab file and extract its contents to a folder on your desktop.
"ACPI\FNBT0000". Updates: 1 - 3 of 3 (page 1 of 1). Previous | Next. Title, Products, Classification, Last Updated, Version, Size, Microsoft Update Catalog
On Windows 10, this is generally considered a "legacy" but necessary driver. Most users only seek it out when they see an "Unknown Device" in Device Manager after a clean install. But if Bluetooth and airplane mode toggles work without it
FNBT0000 is a symptom of lazy firmware engineering. Instead of using standard ACPI methods like _HID (Hardware ID) with a registered PnP ID (e.g., PNP0C32 for a wireless control button), the OEM invented a custom ID. They then wrote a kludge driver for Windows, but never submitted it to Microsoft's Update Catalog. For Linux users, this is a non-issue—the acpi_osi kernel parameter or a simple acpi_listen script can bind the event. But on Windows 10? You're left with a permanent yellow flag unless you dig up a 2015-era OEM driver.
The hardware ID ACPI\FNBT0000\0 typically refers to the Airplane Mode HID Mini-driver Radio Button HID Mini-driver
On certain 2-in-1 convertible laptops and tablets, this ACPI ID controls the physical power and volume buttons built into the chassis.
This driver is a software component that allows your Windows 10 operating system to communicate with your device's physical Function Buttons
Without a driver: