The ACPI MSFT0101 driver is a crucial system driver that enables communication between the operating system and the Advanced Configuration and Power Interface (ACPI) on your computer. ACPI is a standard for managing power consumption and configuring hardware components on modern computers. The MSFT0101 driver, specifically, is a Microsoft-developed driver that facilitates the interaction between Windows 7 and the ACPI subsystem.

Many third-party driver tools package adware, spyware, or ransomware inside the installers.