Doreen, This is kind of a joke for me to try to solve a computer problem. I ran your problem by my husband just to show him that I'm not the only one who has weird computer problems and he suggested this: Go to "start," then choose "control panel, then you'll see a couple of areas you can try. Under the "desktop themes" area, there are things like "dangerous creatures." (maybe your barking dog fits that category altho' to me a barking dog is a benign sound). I didn't take the time to check all the themes. The other area you might check out is "sounds." It seems like somewhere along the way, an option has been chosen that triggers your barking dog. A woman who works with my husband has the sound of the ocean when she moves her mouse. You need to explore the appropriate areas of the "control panel" and find out how to turn off the sound if it bothers you. Your "barking dog" is probably just a variation of the "ding" or "chime" sound that some of us hear. At what event do you hear the barking? Under "sounds" you can choose what events you hear you a sound - "windows opening up" or "drag and drop" or "receiving mail", etc. etc. ( long list.) I can't guarantee that this will work for your barking dog. It's just an idea. Herma Armstrong