Buzz audio playback from any computer in the House

In the last day or two, suddenly my laptop Dell XPS Windows 7 had this weird behavior: when playing audio or video, on youtube or other sites, or locally the MP3 files on my computer with Windows Media Player, every once in a while, there's a hum, kind of like when the judges love not something on one of these talent shows and they ring the buzzer.  It's as if Simon Cowell is right there inside my computer, buzzing just once in awhile, at random moments.  It continues for about half a second, and then the video or the audio continues.

Then when my wife got home, she was complaining about the same thing on his laptop, which has just begun to happen in the past day also.  She had the same problem that watching videos online, or talking to someone on Skype.  She usually use Chrome or Firefox to watch videos, while I was using IE.  It seems that any software or computer is used, and if the file is local or online, happens as long as there is audio playback.

Doing some research, I notice that someone described a similar problem happening after a Windows Update 4 years ago, and this person had to update some other driver to be compatible with the Windows Update.  I noticed that there was some very critical updates in the last days, and I wonder if they are responsible.  If it is a driver incompatibility problem, I don't know yet how to solve it.  Any help is very appreciated.  Thank you!

YES!  I was wondering if it was a question of Dell and would make troubleshooting more tonight.  (I needed to understand why Dell DataSafe kept fails, too).  I had noticed the pop-up blue Dell SupportAssist a couple of days, but don't connect it might have caused a problem.  It seems that it is the culprit, because I've been without buzz since I dropped it and restarted.

Thanks for the help!

Tags: Windows

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