My laptop in Acer Aspire 5734z, not a new one.
That's likely the problem there - that's a computer from around 2010, and I believe you mentioned you had Windows 11? The computer doesn't meet the operating system's requirements.
Is that also the case with the Sound Blaster cards? Which model of Sound Blaster are they, and which operating system is on those computers?
This could also be the case with the 12 MTK mixer - the most recent driver for it was released in 2019, which was 2 years before Windows 11.