What is ASACPI?

The genuine ASACPI.sys file is a software component of ATK Hotkey Utility by ASUSTeK.
ASACPI.sys is a system driver that belongs to the ATK Hotkey Utility, a program that lets users modify what the function keys found on the keyboard. Drivers enable hardware components to communicate with software without additional programming from the software developer. This file is not a critical Windows file and can be removed if known to create problems. The ATK Hotkey Utility comes preinstalled on certain laptops manufactured by ASUS. The program enables users to change the behaviour of the keyboard's function (FN) keys, and even allows a combination of keypresses to trigger certain actions. This program usually runs as a background service and is run at system startup. Asus is a Chinese personal computer vendor that manufactures everything from desktops and laptops to mobile phones, monitors, optical storage devices, and graphics cards. In 2013, it was the world's fifth largest computer seller, in terms of sales. The company began launching graphics cards in 2005 with their initial PhysX accelerator card. Asus was founded in Taipei in 1989 by T.H. Tung, Ted Hsu, Wayne Hsieh and M.T. Liao, all previously employed by Acer. The company is currently headquartered in Taipei, Taiwan.

AsACPI stands for Asus Advanced Configuration and Power Interface

ASACPI.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 operating system, hardware etc. The free file information forum can help you determine if ASACPI.sys is a Windows system file or if it belongs to an application that you can trust.

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

ASACPI.sys file information

The process known as ATK0110 ACPI Utility or ATK0110 ACPI UTILITY belongs to software ATK0110 ACPI UTILITY or ATK0110 ACPI Utility by ASUSTeK Computer (

Description: ASACPI.sys is not essential for the Windows OS and causes relatively few problems. The ASACPI.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 5,810 bytes (92% of all occurrences), 7,680 bytes, 6,504 bytes, 5,755 bytes or 13,216 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no file information. The program has no visible window. There is no detailed description of this service. The file is not a Windows system file. It is a trustworthy file from Microsoft. ASACPI.sys appears to be a compressed file. Therefore the technical security rating is 22% dangerous, however you should also read the user reviews.

Recommended: Identify ASACPI.sys related errors

Important: Some malware disguises itself as ASACPI.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the ASACPI.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.


User Comments

ACPI-Treiber vom ASUS-Motherboard
  J├╝rgen Quast  
ATK0110 driver is installed with Asus AI Booster software, is introduced as new hardware when AI NOS is enabled in BIOS ?
  Peter   (further information)
Install need
atk 0110 acpi utility
I have motherboard ASUS P5VD2-MX and cd-installation contants ASACPI.sys in folder: D:\Bin\ACPI\Acpi\WIN2000
  Andrey   (further information)
That is the pseudo-interface for the ASUS AI Booster program. The driver gives the AI Booster access to the clockgen and the like.
  Poul Agertoft   (further information)
it's an asus driver part of the asus suite. if out of date can cause BSODs
Asus needs to update it already!

Rating chart

Summary: Average user rating of ASACPI.sys: based on 22 votes with 9 user comments. 20 users think ASACPI.sys is essential for Windows or an installed application. One user thinks it's probably harmless. One user thinks ASACPI.sys is dangerous and recommends removing it. One user is not sure about it.

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Best practices for resolving ASACPI issues

A clean and tidy computer is the key requirement for avoiding problems with ASACPI. This means running a scan for malware, cleaning your hard drive using 1cleanmgr and 2sfc /scannow, 3uninstalling programs that you no longer need, checking for Autostart programs (using 4msconfig) and enabling Windows' 5Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the 6resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the 7DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ASACPI.sys process on your computer, the following programs have proven to be helpful: ASecurity Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. BMalwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ASACPI.sys [all]