: This is the Hardware ID portion. While specific to certain firmware implementations, identifiers starting with "WSTA" are often associated with Microsoft Windows Surface devices or specific system-level drivers like the System Aggregator Module (SAM) .
Check the box next to it, select , and restart the computer once the installation process finishes. Impact of Leaving the Device Uninstalled
This device usually appears under the "Other devices" section with a yellow exclamation mark for one of two reasons:
Xiaomi does not always provide a centralized English driver portal. You can find the necessary software through these channels:
Proprietary hotkeys (like Fn + F-keys) on laptops not functioning properly. How to Fix ACPI\WSTADEF\2&DABA3FF&0 Driver Error acpi wstadef 2&daba3ff&0
⭐⭐☆☆☆ (Annoying, but harmless)
The specific sensor driver is a proprietary component from the laptop manufacturer (OEM) rather than a standard Microsoft driver.
: This is the specific device type identifier. For instance, ASD0001 is historically linked to sensor drivers and advanced ACPI subsystem management on AMD-based and Acer-built architectures.
Look for the software category labeled , Utilities , or Keyboard/Input Devices . : This is the Hardware ID portion
with a yellow exclamation mark, it means Windows knows something is plugged in, but it doesn't have the "instruction manual" (the driver) to make it work.
The Windows installation is missing the original equipment manufacturer (OEM) chipset or hotkey drivers.
If you provide your (e.g., HP EliteBook 840 G3 or Xiaomi Mi Notebook Air), I can find the exact driver link for you. Acpi Wstadef 2&daba3ff&0
On Xiaomi laptops (like the Mi Notebook Air), this ID is linked to the Mi OSD utility Impact of Leaving the Device Uninstalled This device
If you are experiencing actual system instability (sleep failures, CPU spikes, driver errors), the fixes range from a simple driver reinstall to a BIOS update. Disabling the device is safe if no critical feature (like ambient light sensor) is broken.
Last updated: October 2025 Keywords: acpi wstadef 2&daba3ff&0, ACPI device error, Windows Modern Standby fix, virtual ACPI device, Device Manager unknown device
Normally, acpi wstadef 2&daba3ff&0 operates silently in the background. However, users report problems when:
The string is less common. In Microsoft’s ACPI source language (ASL) and Windows ACPI driver naming conventions, "WSTA" typically refers to a Windows System Trigger Alert or, more likely, a custom Device Naming node created by an OEM (Original Equipment Manufacturer). Specifically:
While a missing driver often causes no immediate system collapse, users commonly report secondary bugs when this device remains unconfigured: Acpi.sys (Windows ACPI Driver) - Microsoft Learn