I was unable to change the maximum volume in windows 10 by adjusting the EQ levels in beats audio and i have seen lot of people having the same issue.
This is how i fixed it

Beats audio was useless, when I turned it off and on, nothing changed, until i removed the windows old folder in C:/ (boot in safe mode first) or windows wont remove it, because it really contains the audio driver also existing in windows (new folder), then reboot in normal mode, that's it.
The driver that should be removed from windows old is:
or - and