Missing MaxxAudio equalizers from Realtek HD audio drivers is a well known problem.. It just shows, how incompetent entire IT industry is and always was. With every new Windows version they failed to deliver fully working, quality
drivers. Windows 10 did not just materialize over a night.. HW manufacturers had plenty of time of testing various builds and technical previews, yet they have failed as usually to catch up. Now we need to wait propably year or so, until they get their s**t
together.
The problem is also on MaxxAudio's (Waves Audio LTD) end of the spectrum.
from Waves MaxxAudio support page:
http://www.maxx.com/support/
A note on Audio Drivers for Windows 10
With the upgrade to Windows 10, some users have encountered issues with their audio drivers. We are working closely with our partners to ensure compatibility with Waves in the Windows 10 environment.
Please consult the above support websites for further information on official support and updated audio drivers.
For any problems with the audio drivers on your Dell laptop or desktop, please
consult this list of Dell laptops and desktops tested for Windows 10.
Waves Audio LTD has to partner up with Dell/ASUS as well as the audio driver makers (Conexant and Realtek) to offer updated software that fully works on Win10, which may take a while on older systems running Win10.