How to remove an ACPI error

The file ACPI.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the OS, hardware etc.
The free file information forum can help you determine if ACPI.sys belonging to the Windows system or an application you can trust.

Run a free scan to check for ACPI drivers in need of updating

ACPI.sys file information

The process known as ACPI Driver for NT or Microsoft ACPI Driver belongs to software Microsoft Windows Operating System or Microsoft ACPI Driver by Microsoft (www.microsoft.com).

Description: ACPI.sys is located in the folder C:\Windows\System32\drivers. Known file sizes on Windows 7/XP are 187,776 bytes (59% of all occurrences), 188,800 bytes and 11 more variants.
The driver can be started or stopped from Services in the Control Panel or by other programs. It is a Windows system file. The program is not visible. The service has no detailed description. ACPI.sys is a Microsoft signed file. ACPI.sys seems to be a compressed file. Therefore the technical security rating is 4% dangerous, however also read the users reviews.

Recommended: Identify ACPI.sys related errors

Important: Some malware camouflages itself as ACPI.sys, particularly when located in the c:\windows or c:\windows\system32 folder. Therefore, you should check the ACPI.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.

Score

User Comments

makes our servers crash
Steven

automatica configuration power interface
sugarfooter2

Belongs to Microsoft Windows Operating System. ACPI Driver for Windows NT.
Jess

working of this file

Automatic Configuration Power Interface is a driver which will attempt to throttle CPU usage when temperatures get to high (and other power management operations)
Chuck (further information)

It is the interface between outside vendors and proprietory Windows Management Instrumentation. Can't leave home without it.
Stephen (further information)

takes up CPU resources when running 3D applications on some laptops
Brian

when i try to reinstall windows it says "acpi.sys corrupted". how to fix it
modest

Lots -- by accident! This error message = defective RAM. Replace and, voila, your laptop will spark right up.
Bonappetite

ACPI is an open standard specification introduced by industry to allow operating systems to "discover" hardware and manage power resources. It is what allows "sleep mode" and "wake on key" as well as other energy management processes. acpi.sys is Windows system driver that handles these processes.
Elektronik_1 (further information)

nothing.. firefox was installed and reinstalled the latest update caused our pc to crash numerous times
Chrissy

I am investigating a virus which through AVG incorrectly states that acpi.sys is carrying a virus. Not sure of why at this stage
Henry M

Fingala redirection infects it and stops google working. Tdskiller.exe from Kaspersky fixed it.
Jamie

Windows file needed for proper boot up.
Brassa

I have the same issue with AVG, wanted to move the acpi.sys to a quarantine folder.
PD

Summary: Average user rating of ACPI.sys: based on 18 votes with 15 reviews.

12 users think ACPI.sys is essential for Windows or an installed application. 4 users think it's probably harmless. 1 user think it's neither essential nor dangerous. 1 user think ACPI.sys is dangerous and recommend removing it. 6 users doesn't grade ACPI.sys ("not sure about it").

ACPI scanner

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