I have tried Wizmo but it doesn't seem to able to reset the wave volume, only the overall volume.
I would prefer it if the solution has a feature (like a command line switch) that will allow it to automatically reset the volume to max each time Windows starts.
How do I reset Windows' wave volume and overall volume to max?
Note: This was originally asked for Windows XP. I am currently using Windows 7 and the current accepted answer also works for it.
Best Answer
Even easier: Use nircmd (http://www.nirsoft.net/utils/nircmd.html)
Syntax: nircmdc [device] [left-volume] [right-volume] "nircmdc" with a "c" at the end is the command line version 0 = mute 32767 = half way 65535 = max volume