Acpi Wstadef 2&daba3ff&0 May 2026
Rating: ⭐⭐☆☆☆ (Annoying, but harmless)
This entry represents a "Unknown Device" in Windows Device Manager. It is not a broken piece of hardware. It is almost always a system sensor or power management feature that Windows doesn't have a specific driver name for.
Since this is likely related to your laptop's motherboard sensors, you need the chipset or power management driver.
| Component | Value | Meaning |
|-----------------|----------------|-------------------------------------------------------------------------|
| Bus/Enumerator | ACPI | The device is enumerated by ACPI (not PCI, USB, etc.). |
| Device ID | WSTADEF | Vendor-defined device identifier. Often proprietary or legacy. |
| Sub-ID / Instance| 2 | Possibly a revision or function index. |
| Vendor-Specific Hash/Key | DABA3FF | Uniquely identifies a specific motherboard configuration or firmware table entry. |
| Instance number | 0 | Zero-based instance index for multiple identical ACPI nodes. |
ACPI\WSTADEF_2&DABA3FF&0 is an obscure, OEM-defined ACPI device identifier for a motherboard-specific component, likely from a legacy or embedded system. Without proprietary drivers, Windows treats it as unknown hardware. For normal consumer PCs, it can often be ignored or disabled; for industrial systems, the correct driver must be obtained from the board vendor.
Recommendation: If this ID appears on a generic desktop or laptop and no functionality seems broken, disable the device in Device Manager. If on a special-purpose or older machine, search the exact HWID on the OEM’s support site.
If Windows cannot find the driver, you must go to your laptop/PC manufacturer's support page.
The identifier ACPI\WSTADEF\2&daba3ff&0 is a hardware device ID commonly associated with HP Wireless Hotkeys or the Xiaomi Mi OSD (On-Screen Display) utility. In most cases, it refers to the specialized driver that enables wireless toggle buttons (like Airplane Mode) or specific function keys on your laptop. What This Device Does
HP Devices: It often represents the HP Wireless Button Driver. This software handles the communication between the physical button (or Fn key combo) and the operating system to turn Wi-Fi and Bluetooth on or off.
Xiaomi/Other Devices: It may be linked to the OSD (On-Screen Display) feature, which shows visual icons on your screen when you adjust volume, brightness, or toggle wireless settings. How to "Create" or Fix the Feature acpi wstadef 2&daba3ff&0
If this appears as an "Unknown Device" in your Device Manager, the feature is currently disabled or missing its driver. To enable it:
Identify your Laptop Model: Check the sticker on the bottom of your laptop. Download the Wireless Button Driver:
For HP: Visit the HP Support site and search for the HP Wireless Button Driver.
For Xiaomi: Look for the Xiaomi Mi OSD or Mi Notebook utility on their official support page. Manual Update (if you have the file): Right-click the device in Device Manager. Select Update driver > Browse my computer for drivers.
Point it to the folder where you downloaded the driver files.
Windows Update: Sometimes, clicking Check for updates > View optional updates in Windows Settings will list this driver under "Driver Updates." Technical Breakdown ACPI
Advanced Configuration and Power Interface; handles hardware/software power management. WSTADEF
The specific hardware ID for the "Wireless Status Default" or button device. 2&daba3ff&0
The Device Instance Path, a unique string Windows uses to track this specific piece of hardware in your system. Since this is likely related to your laptop's
If you provide your laptop model (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
Understanding the "ACPI\WSTADEF\2&DABA3FF&0" Device: A Guide to Troubleshooting and Drivers
If you have stumbled upon the hardware ID ACPI\WSTADEF\2&DABA3FF&0 in your Windows Device Manager, you are likely looking at a "Yellow Bang" (an exclamation mark) or an "Unknown Device."
This specific string is an ACPI (Advanced Configuration and Power Interface) identifier. What is ACPI\WSTADEF\2&DABA3FF&0?
The ACPI ID is a unique code Windows uses to identify hardware components integrated into your motherboard or laptop’s firmware.
The "WSTADEF" portion of this ID is often associated with specific power management or thermal management drivers, frequently found on ASUS or MSI motherboards and laptops. It typically refers to a component of the ASUS System Control Interface or a proprietary Wireless Radio Switch driver. Why is it showing as an "Unknown Device"?
Windows shows this error when it cannot find a matching driver in its local library or via Windows Update. This usually happens after: A fresh installation of Windows. A major Windows Update that reset driver configurations.
Upgrading to a newer version of Windows (e.g., moving from Windows 10 to 11). How to Fix the ACPI\WSTADEF Error 1. Install Manufacturer-Specific System Control Drivers
Because this ID is most commonly linked to ASUS hardware, the primary fix is installing the ASUS System Control Interface. Go to the official ASUS Support website. Search for your specific laptop or motherboard model. use the ID to search:
Under the "Drivers & Tools" section, look for Software and Utility.
Download and install the latest version of ASUS System Control Interface (V2 or V3). 2. Install Wireless Radio Control Drivers
On some older models, this ID corresponds to the physical switch or airplane mode toggle.
Look for "Wireless Radio Control Driver" or "HID Radio Controls" in your manufacturer’s driver list. Install the driver and restart your PC. 3. Use Windows Update Optional Updates
Sometimes the driver is available but not automatically installed. Go to Settings > Windows Update. Click Advanced options > Optional updates.
Check under Driver updates to see if an ACPI or Manufacturer-specific driver is listed. 4. Update the Chipset Drivers
The ACPI handles communication between the OS and the hardware. If your chipset drivers are outdated, Windows might fail to recognize sub-components like the WSTADEF device.
Download the latest Chipset Driver (AMD or Intel) directly from your motherboard manufacturer's site. Summary Table Hardware ID ACPI\WSTADEF\2&DABA3FF&0 Most Likely Vendor Common Device Name ASUS System Control Interface / Airplane Mode Switch Primary Fix Install Manufacturer Utility Software Conclusion
While "ACPI\WSTADEF\2&DABA3FF&0" looks like a cryptic error, it is rarely a sign of hardware failure. It is almost always a missing software bridge between your motherboard's special functions and the Windows operating system. Installing the official system utilities from your device manufacturer will typically resolve the issue instantly.
If this device shows an error in Device Manager:
If you are unsure which driver to download, use the ID to search: