Windows7 policy to stop users from turning down sound?

I have a classroom and on a windows7 machine people keep turning the sounds down at the bottom right speaker icon.  So later when a new person arrives they complain the sound isn't loud enough.

I want to have the windows7 speaker fixed at 100% and make people use the classroom speaker volume at the desk (physical button)

Anyway to force the volume to 100% all the time? (and only I would have permission to change as a admin)
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Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
A simple, non-restrictive approach is to not show the mixer icon at all.  That's a feature of the notification area properties of taskbar.
VB ITSSpecialist ConsultantCommented:
I don't think it's possible to restrict the volume level, at least not using native Windows tools.

Your best bet is to use Group Policy or the Local Computer Policy (if you are in a Workgroup environment) to remove the sound icon from the system tray as mentioned by Qlemo above. The only problem with this is if the keyboard has any sort of media keys to control the volume then the students will be able to control the sound level using this method.

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