my computer's volume decreased day by day for about 3 days until nothing. and the volume control icon vanished. in control panel the volume tab is frozen and will not allow me to do anything. sliders won't move etc. parts of other tabs are frozen also. i've referenced many articles similar to mine. but haven't found one with the "frozen" tabs in control panel like mine. if i were able to access or better yet, utilize the volume tab i'd probably be fixed now with all the material available and online support. however, i'm here pleading for help. thanx, dave