Hi Roland. How are you? Regarding  my mac I just use  my  audio with my 
computer speakers. Idon't  use a headset wiht  it. I do use earphones but this 
issue appears randomly. I also get   A user  authentication logging in window 
being announce by voiceover  and now this installer progress  window message.  
I don't know if erasing the  content of my Mac,  and restoring it  from  a time 
machine back up  wil solve the problem. What do you think?  I look forward in 
hering form yousoon. Thank you so    Much and God bless!

  Helga Schreiber 
Group Moderator  
 
  for the IPad help for the blind 
 
[email protected]  

Member of National Federation of the Blind and Florida Association of Blind 
Students.
Member of the International Networkers Team (INT).
Independent Entrepreneur of the Company 4Life Research.
Phone:  (561) 706-5950 
Email: [email protected] 
Skype: helga.schreiber26 
4Life Website: http://helgaschreiber.my4life.com/1/default.aspx 
INT Website: http://int4life.com/ 

"For God so loved the world that he gave his one and only Son, that whoever 
believes in him shall not perish but have eternal life." John 3:16 
Sent from my iPhone 7 running IOS 10.1.1    

> On Jan 6, 2017, at 12:32 AM, 'Roland Zitzke' via MacVisionaries 
> <[email protected]> wrote:
> 
> Helga,
> I have seen similar issues with the log-in screen. Which audio interface are 
> you using, the built-in speaker / headphone or an external one? If this 
> problem ever occurs again you may want to try changing the audio output. 
> Alternatively, you can try to quit VO by pressing CMD+F5, wait for 10 seconds 
> and then pressing the same key combination again.
> I suspect you have a timing issue somewhere in the audio path around 
> CoreAudio.
> Hope this is of any help
> /Roland
> 
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