Windows 7 - Manual

٢.
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      
٣.  fn+f4        :
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  :       .
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:             .
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:            .
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  :       .
      fn+f4.
:        "Extend) "  (  
      . Start ) (< Control Panel )  (< Appearance
and Personalization )    .( Display ) (  Adjust screen
resolution )  .(
   HDMI
  HDMI           HDMI   

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. 
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      :
١.      Speakers )  (      
    Playback devices ) .(
٢.   Playback )(    Digital Output )  ( Digital Output
Device (HDMI) )   )HDMI.((
٣.  Set Default ) (    OK ).(
        :
١.      Speakers )  (      
    Playback devices ) .(
٢.   Playback )(   Speakers ) .(
٣.  Set Default ) (    OK ).(
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 ٥  