Yea, it’s the “maximum startup volume” in the user profiles, but I think the issue is that the OP has a 2021 and it appears the ‘21 doesn’t have user profiles in the new MIB. My guess is that his max start volume feature is set for some reason but he can’t change it because he can’t get to the setting in the MIB to change it.I know my 2019 SE had an adjustment for start up volume in the menu. I don't know if it had an off button.
...just my guess anyway.
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