how to remove windows 7 crack and insert serial number to go genuine

When i installing windows 7 I used crack to activate it. Now I have the serial number to go genuine, so to become real genuine, you have to do this:

1. Click windows, type 'SLUI 3' on the search and run box, then run it


2. Enter the serial number, and click next,


3. Now you are the real genuine
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