Users often encounter errors where the device is "migrated" or fails to start with a protocol error. Microsoft Learn Yellow Bang in Device Manager: If the driver is missing, it will appear as an Unknown Device
The Acpi Msft0101 driver is a software component designed to facilitate communication between your computer's operating system and its hardware devices. Specifically, it's an ACPI (Advanced Configuration and Power Interface) driver, which plays a crucial role in managing power consumption, temperature, and other system settings. -NEW- Acpi Msft0101 Driver 77 2021