There are four system icons in the notification area of the task bar. Of these, only 'Clock' is turned on. 'Volume', 'network', and 'power' are grayed out, permanently inaccessible. I have always had these turned on.
I don't recall when these went bye-bye but it's a recent event. I could reset to an earlier time to skip a few weekly updates but I'd like to know how these got turned off and what I can do to turn them on. Somehow, a switch in the bowels of the beast got thrown. Where is it?
I also note that my volume mixer has morphed into something entirely new that shows a master volume slider and volume sliders that are application-specific. Was this some helpful update from the wonder kids at Miscroswift?