Don't get confused!, I'm sorry
There is not intention to do that, would be a lost of time!!
The fact is that , all audio funtions , in all software that I mentioned!, and on both ,laptop and PC.
There is not an audio problem!
Not even a midi.
There is something that I don't understand, which is not logic.
Something to do with a software, or Windows ....................
I have 4 PC's, including the laptop, and will install PTW4 in another of them , and see if any shows the same anomally.
What is also to mention, is that during a playback of a midi file, if try to change the volume moving the slider on the software, not in Windows, pop-ups again the same message shown at the start of my post.
At the stage, I have been suspicious of a kind of malware, but my PC's all have ESET full internet security installed, and checked with others,there are all clean.