Hello rharv,
Thank You for your response.
I did go to control panel/sound and verify that my default sound device is RealTek High Definition Audio speakers.
This Windows 10 Velocity Micro PC comes with a drivers disk, so I used that, to verify that this machine has the manufacturers recommended RealTek HD sound drivers.
This machines "Normal" Windows 10 sound system appears to be working OK - that is, iTunes and Windows media player for audio. The problem comes when I attempt to use asio4all (version 2_14) with any other program such as Power Tracks Windows 2019 (with the build 2 update). I believe there is superposed to be some sort of software link from the Windows 10 taskbar horizontal left/right volume slider to the sound path coming from the asio4all system. That software link appears to be broken, and so far, I have not been able to discover the problem.
Thank you, in advance, for any thoughts you or any others may have in finding the "Missing Link".