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Microsoft does provide a generic ACPI Fixed Feature Button driver, but many modern laptops require custom OEM drivers to support non-standard hotkey features (e.g., switching between performance modes, launching specific apps).

  • Select it, then click Download and install.
  • Restart your PC.

    • A misconfigured BIOS can cause the Fn key device to be presented incorrectly.

    Acpi Fnbt0000 0 Driver Windows 10 May 2026

    Microsoft does provide a generic ACPI Fixed Feature Button driver, but many modern laptops require custom OEM drivers to support non-standard hotkey features (e.g., switching between performance modes, launching specific apps).

  • Select it, then click Download and install.
  • Restart your PC.

    • A misconfigured BIOS can cause the Fn key device to be presented incorrectly. acpi fnbt0000 0 driver windows 10