Product key code windows 7 proffesional

its writing that these copy of windows is not genuine
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More about product code windows proffesional
  1. Buy it. Like everyone else.
  2. call microsoft
  3. If you have a genuine license key, call Microsoft to activate, if you have no licence sticker for windows 7 professional, buy one for your system and licence it.
  4. - Bad key activation and your activation grace period expired
    - Windows licensing files have been modified, deleted or removed
    - Your product key has been passed around and used until the key has been banned.

    try Microsoft genuine advantage diagnostic tool to help isolate the problem:
    http://windows.microsoft.com/en-US/windows/help/genuine/submit-request
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