Cathie, you turned down the volumes and it rendered with less noise? I wonder if you have a gain stage problem; that is the volume of BiaB's output overwhelms your RealTek volume. So try this turn, your Realtek volumes up to 95% and keep your BiaB volumes low. Let us know if that helps or eliminates the problem.

{edit} It still could be a bad speaker cable, a bad speaker jack, or a bad connection. You still might want to try plugging and unplugging the speaker jack an number of times if the above doesn't work.

Last edited by MarioD; 06/21/21 11:53 AM.
Unclear if the pianist is a total beginner or a professional jazz player?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware