What is ATKACPI?

The genuine ATKACPI.sys file is a software component of ATK Hotkey Utility by ASUSTeK.
ATK Hotkey Utility is a program that lets users modify the behaviour of keyboard function keys. ASMMAP.sys is a driver required for the optimal functioning of ASUS hardware and software. This is not an essential Windows process and can be disabled 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.

ATKACPI stands for ASUS Advanced Configuration and Power Interface Utility

ATKACPI.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 ATKACPI.sys is a Windows system file or if it belongs to an application that you can trust.

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

ATKACPI.sys file information

The process known as ATK0100 ACPI Utility belongs to software ATK0100 ACPI UTILITY by ATK0100.

Description: ATKACPI.sys is not essential for the Windows OS and causes relatively few problems. The file ATKACPI.sys is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 5,632 bytes (50% of all occurrences), 5,760 bytes, 7,680 bytes or 5,786 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows core file. There is no description of the program. The ATKACPI.sys file is a Microsoft signed file. ATKACPI.sys appears to be a compressed file. Therefore the technical security rating is 23% dangerous; however you should also read the user reviews.

Recommended: Identify ATKACPI.sys related errors

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

This is an asus driver. Doesn't seem harmful
  Olcay Misirlioglu  
Asus Driver
  Zaph   (further information)

Summary: Average user rating of ATKACPI.sys: based on 1 vote with 2 user comments. One user thinks ATKACPI.sys is essential for Windows or an installed application. One user is not sure about it.

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Best practices for resolving ATKACPI issues

A clean and tidy computer is the key requirement for avoiding problems with ATKACPI. 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 ATKACPI.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

ATKACPI.sys [all]