If this device appears as an "Unknown Device" with Code 28 in Device Manager, you can resolve it through the following methods: Microsoft Update Catalog : The most official source for this driver is the Microsoft Update Catalog
Check under to see if any Elitegroup or Mediatek drivers are listed. 3. What if the Driver Still Fails?
Sometimes the driver is available through Windows Update but is listed under "Optional Updates." Go to > Update & Security > Windows Update . Click on View optional updates . acpi fnbt0000 0 driver windows 10
If that fails, click to check the "Optional updates" section.
Last updated: 2025. Applicable to Windows 10 versions 1809 through 22H2. If this device appears as an "Unknown Device"
Right-click the "Unknown Device" (ACPI\FNBT0000) and select . Select Browse my computer for drivers .
Click , point the file explorer to the folder where you extracted the Microsoft Update Catalog files, and check Include subfolders . Sometimes the driver is available through Windows Update
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.
If your manufacturer's site is difficult to navigate, Microsoft often hosts these basic ACPI configuration files on their update servers. Go to > Update & Security > Windows Update . Click Check for updates . Look for a link that says View optional updates . Expand the Driver updates section.
