: You can often use the Intel Driver & Support Assistant to automatically identify missing power management components. Alternative Interpretation: "Draiver" App Acpi.sys (Windows ACPI Driver) - Microsoft Learn
It is highly recommended to download ACPI drivers only from rather than third-party "driver download" portals, which may bundle malware.
If you see an in your Windows Device Manager with a yellow exclamation mark, it is often due to a missing ACPI driver. This frequently happens after a "clean" installation of Windows where the manufacturer's specific system drivers were not automatically included. Where to Download (Safety Warning)
: Managing how the laptop reports its battery percentage. Why You Might Need It
The ACPI driver ( Acpi.sys ) is a core Windows component that acts as an interface between the operating system and the system firmware (BIOS/UEFI). It is responsible for:
: Helping Windows identify internal motherboard components that don't have standard "Plug and Play" IDs.
: Likely refers to a specific driver version or package released in 2017. For instance, Lenovo released a critical ACPI driver for ThinkCentre M810z and similar models on March 9, 2017 . "skachat" : This is Russian for "to download." What is the ACPI Driver?