Change Windows 7 Professional Service Pack 1 of Windows 7 Home Premium

I've been running Windows 7 Service Pack since I got the computer, but in the last two years a "this copy of windows is not genuine" made my black background.

He asked me for a product key, the thing is that windows 7 profesional was already installed and it did not bring any installation disc.

When I searched in my PC, I found a small label that had the product key on the side.  The problem is that the product key for Windows 7 Home Premium!   I do not have a disk to install windows 7 Home premium, nor have I any money to buy another drive or key.

What can I do to uninstall windows 7 pro SP1 without losing all my files and install windows 7 Home premium!

Help!

This has nothing to do with Service Pack 1, but rather than the version that you have installed and the key you have will not work.

To analyze and solve problems for Activation and Validation, we need to see a full copy of the diagnostic report produced by the MGADiag tool (download and save to the desktop -http://go.microsoft.com/fwlink/?linkid=52012 )
Once downloaded, run the tool.
Click on the button continue, after a short time, continue button will change to a copy button.
Click the copy button in the tool (ignore the error at this stage) and then paste (with r-click and paste or Ctrl + V) in your message.

Tags: Windows

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