Windows 8.1 Manual

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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 ) (  
Control Panel )  (   . Appearance and Personalization )
   .( Display ) (  Adjust screen resolution )  .(
   HDMI
    HDMI           HDMI 
    .         :
١.    Windows      Speakers )  (  
        Playback devices ) .(
٢.   Playback )(    Digital Output )  ( Digital Output
Device (HDMI) )   )HDMI.((
٣.  Set Default ) (    OK ).(
        :
١.    Windows      Speakers )  (  
        Playback devices ) .(
٢.   Playback )(   Speakers ) .(
٣.  Set Default ) (    OK ).(
٣٥  ٥  