My volume (F10, F11, F12)  will not work?

I can turn the volume to mute (f10) or I can turn it on (F11,12) but it is either on mute, or full blast. i read some other posts and trashing my files did not work. It has a (like no-smoking) symbol! I can't find anything to help me anywhere else online! Can anyone help me figure this out?

Hi rkoopman & welcome to the forums
I would start by going in to System Preferences/Keyboard and see if the option to use all F keys as standard function keys is checked, then move the the Keyboard Shortcuts tab and 'Keyboard & Text Input' to see what the F key settings are there...confirm there are no conflicts with your desired sound settings.
Next go to Sound Preferences and confirm you can raise/lower the sound settings normally there.
Finally, do you have an 3rd party programs that work to modify the Finder Menu bar or keys....any chance you're using Growl, as an example?

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