What is FourEngine.exe?

The genuine FourEngine.exe file is a software component of ASUS EPU-4 Engine by ASUS.
ASUS EPU-4 Engine is a power-saving tool that monitors different components to optimize and reduce power usage on ASUS systems. FourEngine.exe launches the ASUS EPU-4 Engine program. This is not an essential Windows process and can be disabled if known to create problems. ASUS EPU-4 Engine is available for certain ASUS motherboards and is usually pre-installed. EPU-4 features automatic detection and moderation of power to several motherboard components such as the processor, graphics processor, memory, hard drives, chipsets and system fans. 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.

FourEngine stands for ASUS EPU Four Engine

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 FourEngine.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 FourEngine.exe related errors

FourEngine.exe file information

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

The process known as FourEngine.exe belongs to software unknown by ASUSTeK Computer ( or ASUSTek Computer (

Description: FourEngine.exe is not essential for the Windows OS and causes relatively few problems. The file FourEngine.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 5,777,408 bytes (27% of all occurrences), 5,782,528 bytes and 10 more variants. 
There is no description of the program. It is not a Windows system file. The program is not visible. It can change the behavior of other programs or manipulate other programs. FourEngine.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 60% dangerous; however you should also read the user reviews.

Recommended: Identify FourEngine.exe related errors

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

it came with my computer (asus/windows 7)
  cisco diez  
It's part of the ASUS EPU-4 Engine; generally targetted at mulit-core CPUs and on-board video controllers
FourEngine.exe is a utility that comes with Asus computers. It is an EPU that helps regulate power consumption, thereby optimizing your PC to use less power. It's an environmentally-friendly application that I don't recommend uninstalling.
  Chris Costa  
Came with the computer
Asus EPU engine
FourEngine.exe is part of EPU-4 Engine Driver agent .
This application is the part of the 'ASUS EPU-4 ENGINE' - It's a CPU/Hardware monitor included with various ASUS motherboards. Usually located in 'C:\Program Files (x86)\ASUS\EPU-4 Engine' or similar directory. Not harmful.
  Evan Z  
Part of the Asus motherboard EPU-4 driver. Safe.
I installed it with my ASUS P7P55D-E LX motherboard. Comes with the ASUS EPU-4 Engine, which is used for power management. I tried to make my PC less noisy by enabling it, but my case fans make my PC noisy anyway. Use it, if you want to save some electricity costs.
  Tomi Häsä  
part of ASUS MB EPU-4 Engine
I believe it might have something to do with quad-core CPU's, it was there the moment I first booted my PC.
  Jamie Connolly  
I don't believe it to be harmful and never thought it should be removed however as it can manipulate other programs I don't like it starting when my Win 7 Boots up so I disabled it from doing so. I'm sure it will start if required by any program that needs it. ----------------------------- ( "Fourengine.exe with description Six Engine is a process file from an unknown company belonging to an unknown product.The file is digitally signed from ASUSTeK Computer Inc. - VeriSign Time Stamping Services Signer - G2 We do not recommend removing digitally signed files from ASUSTeK Computer Inc." I've left a link below to a Win 7 forum who discuss ASUS. One saying you should uncheck all to stop them from starting up!! (Maybe I will do?) I hope this helps you make up your own mind as what you think is best for you.
FourEngine.exe is part of power and performance management software provided for Asus computers / motherboards. It is part of the software called the EPU-4 Engine. It's actually very useful, I use this instead of SpeedFan to control the noise of my machine. When I'm working I drop the performance down to power saving mode and I see no difference in desktop functionality but the power use and speed of the fans drops drastically. I recommend this software for anyone who has a compatible motherboard, which is pretty much every modern Asus motherboard. It is in no way malicious and no more of a security risk than any other legitimately trusted executable on your machine. I'm rating it important not because it's essential to the operation of your machine or OS but because the utility is incredibly handy.
  Peter M  
Control Power to CPU. Bad for gaming and can cause problem during CPU/GPU intense moments such as explosions/motion blur/light blooming

Rating chart

Summary: Average user rating of FourEngine.exe: based on 17 votes with 14 user comments. 9 users think FourEngine.exe is essential for Windows or an installed application. 2 users think it's probably harmless. 5 users think it's neither essential nor dangerous. One user suspects danger. 2 users don't grade FourEngine.exe ("not sure about it").

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Best practices for resolving FourEngine issues

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

FourEngine.exe [all]