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 or ASUS Splendid Video Enhancement or ATK ACMON 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 8/7/XP are 17,920 bytes (18% of all occurrences), 684,544 bytes and 18 more variants. 
The file is not a Windows core file. The program is not visible. Therefore the technical security rating is 39% dangerous; however you should also read the user reviews.
If you have any problems with ACMON.exe, you may want to uninstall the associated program (Start > Control Panel > Add/Remove programs > ASUS Splendid Video Enhancement or ASUS Splendid Video) 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  

Rating chart

Summary: Average user rating of ACMON.exe: based on 14 votes with 9 user comments. 5 users think ACMON.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 2 users suspect danger. One user thinks ACMON.exe is dangerous and recommends removing it. One user is 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 doing a repair of your installation, or in the case of Windows 8, 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]