HP Laptop from Startup - Windows 7

   
fn+f10            DVD  BD.
fn+f11   

   DVD  BD      .
fn+f12            DVD  BD.
   
           .         
       .
    )   (



 fn           num lk.
:            
  .
             .
   
          
 .
 num lk            fn.
:            
    .
   