What is EPU.exe?

The genuine EPU.exe file is a software component of ASUS EPU-6 Engine by ASUS.
ASUS EPU-6 Engine is a power-saving tool that monitors different components to optimize and reduce power usage on ASUS systems. EPU.exe runs ASUS EPU-6 Engine. This is not an essential Windows process and can be disabled if known to create problems. ASUS EPU-6 Engine is available for ASUS P5Q Series motherboards and is usually pre-installed on systems that ship with this motherboard. EPU-6 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.

EPU stands for ASUS Energy Processing Unit

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 EPU.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 EPU.exe related errors

EPU.exe file information

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

The process known as EPU.exe belongs to software SUPERAntiSpyware by ASUSTeK Computer (

Description: EPU.exe is not essential for the Windows OS and causes relatively few problems. EPU.exe is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 4,113,920 bytes (37% of all occurrences), 5,309,056 bytes and 4 more variants. 
There is no information about the author of the file. It is not a Windows core file. The program has no visible window. The process starts upon Windows startup (see Registry key: MACHINE\Run). EPU.exe is able to record keyboard and mouse inputs. Therefore the technical security rating is 53% dangerous, however you should also read the user reviews.

Uninstalling this variant: In case of any problems with EPU.exe, you can do the following:
  1) completely remove SUPERAntiSpyware (Control Panel ⇒ Uninstall a Program)
  2) consult Superantispyware’s Customer Service
  3) find out if there is a newer version available.

Recommended: Identify EPU.exe related errors

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

Belongs to Asus motherboard users.
  Em   (further information)
Digitally signed by ASUSTek Computer Inc. (Source:several google hits)
I have an Asus motherbored on my desktop and my laptop dosent and it only appears on my desktop which has the asus motherbored
It's for ASUS MotherBored users.
  Elliott Game   (further information)

Summary: Average user rating of EPU.exe: based on 4 votes with 4 user comments. 4 users think EPU.exe is essential for Windows or an installed application.

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Best practices for resolving EPU issues

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

EPU.exe [all]