FxSound launches but does absolutely nothing — extensive Windows troubleshooting exhausted

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I’m completely stuck with FxSound and have reached the point where I’ve exhausted basically every troubleshooting step I can think of.

The original problem was that FxSound would appear to launch, but no interface/window would open, and FxSound’s processing wasn’t affecting my audio. Normal audio through my headphones works perfectly.

Here’s what I’ve established:

  • FxSound is installed normally.
  • The executable is located at:
    C:\Program Files\FxSound LLC\FxSound\FxSound.exe
  • Running the executable directly from Command Prompt previously caused an FxSound.exe process to remain running, but no GUI appeared.
  • The Windows Playback Devices list contains FxSound Speakers, so the virtual playback endpoint exists.
  • Normal devices such as Realtek, NVIDIA High Definition Audio, and my USB audio device work normally.
  • Device Manager does not show an obvious FxSound device/error.
  • There are no obvious corrupted-device errors.
  • There is no FxSound service visible in services.msc.
  • %LOCALAPPDATA% does not contain an FxSound folder.
  • Event Viewer does not show an obvious FxSound crash/error.
  • Registry searches produced no useful FxSound information.
  • Windows system-file/integrity checks did not reveal anything obviously corrupted.
  • Running the executable from CMD returned ERRORLEVEL=0.
  • More recently, FxSound has progressed from launching invisibly to not appearing to start at all.

I have also already reinstalled the appropriate motherboard/Realtek audio driver, and I really don’t want to keep removing/reinstalling functioning Windows audio drivers because normal audio itself is working.

At this point I’d really appreciate help identifying what component of FxSound is failing to initialize, particularly the GUI/backend/virtual-audio processing side.

Is there a specific FxSound diagnostic/logging procedure, command-line argument, debug mode, or clean-removal procedure that can reveal why FxSound.exe isn’t initializing?

I’m happy to provide logs, screenshots, Event Viewer information, Process Monitor traces, or anything else needed.

Thanks.