Most antivirus programs identify IgfxSys.dll as malware—such as Symantec identifies it as Adware.Gen, and Kaspersky identifies it as not-a-virus:AdWare.Win32.BHO.knv.
The free file information forum can help you find out how to remove it. If you have additional information about this file, please leave a comment or a suggestion for other users.
There is relatively little known about this process along the lines of the following technical specificaitons.
Description: IgfxSys.dll is not essential for Windows and will often cause problems. The file IgfxSys.dll is located in a subfolder of the user's profile folder.
Known file sizes on Windows 10/8/7/XP are 186,368 bytes (66% of all occurrences) or 59,392 bytes.
The program has a visible window. There is no description of the program. The application starts when Windows starts (see Registry key: Run, MACHINE\Run). IgfxSys.dll is not a Windows core file. Therefore the technical security rating is 36% dangerous.
Recommended: Identify IgfxSys.dll related errors
If IgfxSys.dll is located in a subfolder of C:\Windows, the security rating is 36% dangerous. The file size is 180,224 bytes. The program has a visible window. There is no description of the program. The program starts upon Windows startup (see Registry key: Run, MACHINE\Run). The file is not a Windows system file.
Important: You should check the IgfxSys.dll process on your PC to see if it is a threat. If IgfxSys.dll has changed your browser's search engine and start page, you can recover your browser's default settings as follows:Reset default browser settings for Internet-Explorer ▾
The following programs have also been shown useful for a deeper analysis: Security Task Manager examines the active IgfxSys process on your computer and clearly tells you what it is doing. Malwarebytes' well-known anti-malware tool tells you if the IgfxSys.dll on your computer displays annoying ads, slowing it down. This type of unwanted adware program is not considered by some antivirus software to be a virus and is therefore not marked for cleanup.
A clean and tidy computer is the key requirement for avoiding PC trouble. 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.