The volume icon used to display in my taskbar, but it's not there anymore. I checked out the sound and volume properties, and the option to have it displayed is checked so it should be there. It'd not hiding in the inactive icons either. Also, the buttons on my laptop that would control the volume (mute, volume up, volume down) don't work at all anymore

The sound still works and I'm able to control it if I manually open the volume toolbar or in other programs like WMP. Anyone know how I can fix this?