The ACPI\WSTADEF\2&DABA3FF&0 error means your operating system can detect the hardware but doesn't have the correct driver software to communicate with it. This is common after a clean Windows installation, where the system only includes generic drivers.
| OEM | Wstadef typically handles | |-------|--------------------------------------------| | Lenovo| Wake-on-LAN status, Modern Standby triggers| | Dell | Ambient light sensor notification | | HP | Lid switch / sleep timer coordination | | Acer | Thermal zone polling | acpi wstadef 2&daba3ff&0
If you cannot remove the error and the system runs fine without it: Common Symptoms This device is working properly
When you see this listed under "Other Devices" with a missing driver warning, Windows is telling you that it detects the physical On-Screen Display shortcut key hardware subsystem, but lacks the software profile required to deploy its functions. Common Symptoms acpi wstadef 2&daba3ff&0
This device is working properly.