What is ACMON.exe?

The genuine ACMON.exe file is a software component of ASUS Splendid Video by ATK (ASUSTeK Computer Inc.).
This Utility for ASUS graphic cards and notebooks improves contrast, brightness and colors such as skin tones (as in Webcam videos) on an LCD display. Press Fn + C on your notebook to open the tool, which is a part of ASUS's so-called Splendid Video Enhancement Technology. Four engineers from Acer founded ASUS in Taiwan in 1989 as a motherboard manufacturer, taking its name from "Pegasus," the mythical winged horse. ("Asus" also means "eminent" or "grand" in Chinese.) In 2008 they split three ways into Asus, Pegatron, and Unihan. They spun off Pegatron, their OEM motherboard manufacturing arm, in June 2010. They manufacture PC components and peripherals, notebooks, tablets, servers and smartphones. With revenue over US$11.9 billion and a technical park occupying 540K square meters, (besides other worldwide locations), their website says they have nearly 40% market share in motherboards, (#1 in the world), and are the leading technical firm in Taiwan.

ACMon stands for ASUS Control Monitor

The .exe extension on a filename indicates an executable file. Executable files may, in some cases, harm your computer. Therefore, please read below to decide for yourself whether the ACMON.exe on your computer is a Trojan that you should remove, or whether it is a file belonging to the Windows operating system or to a trusted application.

Click to Run a Free Scan for ACMON.exe related errors

ACMON.exe file information

Windows Task Manager with ACMON
ACMON.exe process in Windows Task Manager

The process known as ACMON belongs to software ASUS Splendid Video Enhancement or ASUS Splendid Video or ATK ACMON or ASUS Splendid ASUSTeK Computer by ATK ( or ASUS (

Description: ACMON.exe is not essential for Windows and will often cause problems. ACMON.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 684,544 bytes (25% of all occurrences), 851,968 bytes and 23 more variants. 
The file is not a Windows core file. The program is not visible. You can uninstall this program in the Control Panel. Therefore the technical security rating is 33% dangerous; however you should also read the user reviews.

Uninstalling this variant: If you have any problems with ACMON.exe, you may want to safely remove the program using the uninstall program of ASUS Splendid Video Enhancement or ASUS Splendid Video (Control Panel ⇒ Uninstall a Program) or look for help on the website.

Recommended: Identify ACMON.exe related errors

Important: Some malware camouflages itself as ACMON.exe, particularly when located in the C:\Windows or C:\Windows\System32 folder. Therefore, you should check the ACMON.exe 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

The process ACMON belongs to the software ASUS Splendid Video by ATK.
  Andrew   (further information)
ACMON.exe is for the ASUS Splendid Video Enhancement
  d   (further information)
acmon.exe is a process from SigmaTel Audio Assistant by SigmaTel and part of SigmaTel Multimedia. This task is responsible for a hardware piece in your system. It offers additional configuration options and support for this device
free acmon
Asus Compatibility MONitor (ACMON).exe; (ASUS bloatware; see "Splendid" comment above) - I left it on is because I came accross notes referening to ACMON as workaround for issues between some Skype (VOIP/Video) type apps and ASUS... but i could be wrong.
Came installed on Asus laptop when new. Frequently fails to close automatically when shutting down Windows, requiring manual forced shutdown. When terminated at the start of a session, does not appear to have any adverse affects; supposedly related to video, but both viewing and broadcasting video seem unaffected by ending the task via Task Manager at the start of a session.
it comes installed on the pc it shouldnt be harmless. it says its not closing causing problems with pc hibernation
Causes crashes
  Jean-Pierre Baconnet  
ASUS Video Enhancement.
  Nadzlira Myra  
I think it is interfering with my Word 2013,it happens daily, when I want to save a Word page, it gets locked and to get rid of it, I am forced to log out and log in again. Recently the name Acmon, appeared with an S for Skype on my display. I don't have Skype. There is something strange with this Acmon.
I am reviewing everything that automatically starts at boot time due to the abysmal performance of my Laptop. In addition to that, my 3G USB disk is constantly spinning. I am closing down one program at a time. When I closed this down, my USB drive stopped spinning and just while accessing this web page I can already feel that Firefox is more responsive with fewer mini-pauses. I cannot explain why this program would cause such issues - and I am still suspicious that this may not be the problem. I would recommend stopping this process if you feel comfortable doing so.
  P Rhodes  
it's harmfull app. becoz of out of engine
  faraz ahmad  
Pretty sure it's an integrated Asus program for video optimisation or something. I have an Asus laptop with tablet functionality (recently upgraded from Windows 8 to 10) and ACMON runs in the background. It is one of the most memory-heavy applications that runs without any programs open on my computer. Seeing as I have an NVIDIA GeForce 850M, I don't think that a standard program like ACMON makes any difference at all (and is probably redundant altogether). I'd suggest shutting it off if you have a powerful graphics card of any sort.
Dragging down my Asus thru the mud. Eats 70-90% of my cpu. And causes problems with avast.uninstalld.
It has been causing my disc to operate at 100%. As soon as I stopped it from running the computer started running normally.
  P Meijler  
I own an Asus notebook and run ACMON on it. ACMON is trusted, and it impacts performance because it essentially adds another layer of screen processing before the image rendered by your computer gets displayed. If you want your computer to run marginally faster, disable it. If you want your screen to look better, don't.
  George Price  

Rating chart

Summary: Average user rating of ACMON.exe: based on 26 votes with 16 user comments. 7 users think ACMON.exe is essential for Windows or an installed application. 5 users think it's probably harmless. 8 users think it's neither essential nor dangerous. 3 users suspect danger. 3 users think ACMON.exe is dangerous and recommend removing it. 2 users don't grade ACMON.exe ("not sure about it").

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Best practices for resolving ACMON issues

A clean and tidy computer is the key requirement for avoiding problems with ACMON. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic 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 resmon 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 DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the ACMON.exe process on your computer, the following programs have proven to be helpful: Security 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. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

ACMON.exe [all]