What is sisidex?

The genuine sisidex.sys file is a software component of SiS Motherboard Chipset by Silicon Integrated Systems.
Sisidex.sys is a device driver installed by SiS motherboard chipsets. Device drivers allow hardware to communicate directly with the operating system and computer memory. This file is a critical Windows component and should not be removed. Silicon Integrated Systems (SiS) is a Taiwanese company that manufactures motherboard chipsets that have applications in consumer electronics, personal computers, HDTV, etc. It was founded in 1987 and is headquartered in Hsinchu Science Park, Taiwan.

SISIDEx stands for Silicon Integrated Systems Integrated Drive Electronics Express Driver

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

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

Sisidex.sys file information

The process known as SISIDEX Driver belongs to software Windows (version 2000 DDK driver) by Windows ( (version 2000 DDK provider).

Description: Sisidex.sys is not essential for the Windows OS and causes relatively few problems. The sisidex.sys file is located in the C:\Windows\System32\drivers folder. Known file sizes on Windows 10/8/7/XP are 49,024 bytes (86% of all occurrences) or 48,896 bytes. 
The driver can be started or stopped from Services in the Control Panel or by other programs. The program is not visible. There is no detailed description of this service. It is not a Windows system file. sisidex.sys appears to be a compressed file. Therefore the technical security rating is 40% dangerous, however you should also read the user reviews.

Recommended: Identify sisidex.sys related errors

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

might be part of SIS chipsets
sehr wahrscheinlich ein treiber für die Benchmark "3dmark", um die Grafikkarte anzusteuern

Summary: Average user rating of sisidex.sys: based on 1 vote with 2 user comments. One user thinks it's probably harmless. One user is not sure about it.

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Best practices for resolving sisidex issues

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

sisidex.sys [all]