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I have a Lenovo T520 laptop that came with Windows 7 Professional.

The laptop does not have a Windows license sticker, but it came with legal system preinstalled. I was able to retrieve the Product Key with NirSoft ProduKey.

I am sure that the key is correct, because I have used it before doing system recovery.

This time I wanted to make a clean reinstall though. After reinstalling, the Product Key is not accepted by Windows. The error message that I receive says:

A problem occured when Windows tried to activate. Error Code 0xC004E003

What should I do to activate Windows with this product key?

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    A google search found this, which may be useful: answers.microsoft.com/en-us/windows/forum/…
    – ChrisInEdmonton
    Aug 4, 2015 at 21:27
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    Alzo this: support.microsoft.com/en-us/kb/931276
    – Xavierjazz
    Aug 4, 2015 at 21:30
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    The key installed by Lenovo is a Volume License Key and will not work with regular Windows Installation media. If your recovery partition is gone or not working you will need to order a recovery disc set from Lenovo.
    – Moab
    Aug 4, 2015 at 23:17
  • Thanks Moab, your solution was useful. It turned out that there actually was a sticker with the license key. The sticker was located behind the battery.
    – warpech
    Aug 5, 2015 at 9:24

1 Answer 1

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It turned out that there actually was a sticker with the license key. The sticker was located behind the battery.

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