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I just completed a fresh install of Windows 8 Pro as it was released to MSDN. Installation went without a hitch however I can't find out where to enter the correct product key for the copy I have.

Clicking on the Activate this Computer in Activity Centre displays the following screen, but no option to change the product key:

Windows 8 Activation Screen

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Have you checked out this link. –  avirk Aug 18 '12 at 12:30
    
@avirk Please post a detailed answer including that link and I will accept the answer. –  Diago Aug 18 '12 at 12:37
    
Diago as you said Done! :) –  avirk Aug 18 '12 at 12:44

2 Answers 2

up vote 16 down vote accepted

Just follow these steps to add/change product key using Command Prompt and slmgr.vbs:

  1. Launch Command Prompt as an Administrator.

  2. At the command prompt, type in slmgr.vbs -ipk(insert your product key here) and click Enter.

  3. To activate windows, type in slmgr.vbs -ato and click Enter.

All information form this Source

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The command to display the GUI for changing the product key is slui 3.

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Welcome to Superuser. I edited your answer, please refrain from posting rants and such, please check the FAQ, too. Feel free to edit your question again if you want to add something. –  Baarn Aug 28 '12 at 20:22

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