Mac Pro 3,1 speaker disappear need help
Hello
I don't know what really happen. After downloading Adobe on my Mac Pro 3,1 the speaker symbol on top of the screen right side near the date disappear. I can't hear video or watch movies anymore. t use to be shaded dark gray but now it's very light gray. When I tried to click to raise the volume it will not allow me to adjust. Any help is very much appreciated. Thank you Arnold
Mac Pro, OS X Yosemite (10.10.3)