How to uninstall Windows 7
To uninstall Windows 7, you must determine your specific installation scenario from the scenarios that are listed in this section, and then follow the steps for that scenario.
Scenario 1: You installed Windows 7 on a Windows-based computer
You installed a version of Windows 7 as a new installation over Windows XP, Windows Vista, or another version of Windows 7. You used the Windows 7 installation media to install Windows 7 to the same hard disk drive as the original operating system.
In this scenario, the Windows 7 installation will have created a Windows.old folder that contains your previous operating system and personal files. This Windows.old folder is in the root of the Windows partition. To revert to this previous operating system, click the following article number to view the article in the Microsoft Knowledge Base:
971760 How to restore a Windows 7-based computer to a previous Windows installation by using the Windows.old folder.
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