Windows 8.1 - User's Guide

    
!         .
!              
  
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 
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 HP     
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    HP.
:            
  .
               .
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            :
●    
●     
●        DVD  BD )  (
●  Disk Defragmenter )   (
●     
           :
●  .
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             .
        :
●      .
●   
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    .
  
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