Good evening frolof,
Honestly, I am as much at a loss as yourself as to why this is happening; but let me start by asking some questions:
Does this also happen when the main purple Power button is set to Off?
Does this happen with any and all of your audio devices?
Why can’t you enhance sound on your PC?
Second thing I’m going to do, is paste a general list of settings I’d like you to check (don’t worry, it won’t take long):
In the Help section of FxSound’s Settings menu, check to make sure you have the latest version installed (v1.1.17.0), available from fxsound.com or the Microsoft Store;
In the General section of FxSound’s Settings menu, if you don’t need it, please try unticking the box for automatic switching and see if this improves the situation;
Make sure your computer has received the latest updates;
Try running FxSound as Administrator;
In Windows Sound Settings, make sure all your devices match at the same frequency setting, with “24 bit 48000 Hz” being the maximum;
In Windows Sound Settings, make sure the FxSound device is set as the Default Device;
If this doesn’t work, try setting FxSound as the Default Communications Device;
In Windows Sound Settings, disable Exclusive Mode for all devices (Playback ànd Recording);
In Windows Sound Settings, disable all Enhancements including Loudness Equalization for all devices (except for FxSound which doesn’t have this tab);
In Windows Sound Settings, disable Hardware Acceleration;
In Windows Sound Settings, disable all devices you don’t use and/or need, Playback ànd Recording, including the hidden ones;
If all else fails, try uninstalling the program, downloading it from a different source, and installing that version.
Another general piece of advice by @vincent I always include:
Also, below is a post from a user who had a similar problem:
And, to conclude, here’s a post by a former regular which could perhaps also be of use to you, especially the advice about looking through the Windows Error log - a screenshot, or even a simple verbal summary of the event, would be very helpful in the effort to troubleshoot it, for example.
So, here are some things you can try, and I hope to hear back from you shortly with your results.
If your problem is solved, please do let me know;
If not, please also let me know, so we can explore other options.