Acpi\ven_fnbt&dev_0000

Acpi\ven_fnbt&dev_0000

Look for "Wireless Switch" or "Airplane Mode" drivers for your specific laptop model (e.g., Intel Classmate PC support ).

If you manually try to update the driver via Device Manager and it fails: acpi\ven_fnbt&dev_0000

Note: Sometimes this is bundled inside a larger "Fujitsu Hotkey Utility" or "Fujitsu Driver Package." Look for "Wireless Switch" or "Airplane Mode" drivers