Windows7,

• The notebook PC you bought, a liberal translation
  http://37199658.at.webry.info/201112/article_1.html
  os is windows7

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  el OS es windows7
  
  
• Cause of PC breakdown, a liberal translation
  http://ameblo.jp/gun-chan/entry-10905786849.html
  Therefore as for os windows 7, operation became sluggish

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  Sujets de fournir rapidement les dernieres japonais.
  
  
• Leaving the data, OS re-installation
  http://tonghu.txt-nifty.com/tori/2011/09/os-d180.html
  os although with the foam/home premium of windows7, there is no remembering in the body, becoming such a picture, choosing whichever, is the case, infinite loop of the picture of the recovery moving lever mandatorily

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  OS aunque con la espuma/el premio casero de windows7, no haya el recordar en el cuerpo, haciendo tal cuadro, eligiendo cualquiera, es el caso, bucle infinito del cuadro de la palanca móvil de la recuperación obligatorio
  
  
• It offers Japanese Trend , bandwagons , epidemic and Recent fashion in English.
  http://sakura-san.cocolog-nifty.com/sakura_biyori/2011/04/post-a024.html
  os of course windows7! Because it is first, it made package edition

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  ¡OS por supuesto windows7! Porque es primer, hizo la edición del paquete