Windows 7 - 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 )  (< 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 ).(
 ٣٤