Windows 7 completely uninstall - is this necessary?
In Windows 7 it is your current operating system your computer is running. This is the only way you can work with your Computer. During operation, you can run Windows, therefore, not self-delete.
- You want to re-install Windows or any other Windows Version, insert the CD and start the Installation. Here, the old Windows will be deleted automatically and the new installed. You do not need to uninstall Windows 7 so separately.
- The new Version of Windows is available as DVD or Download, try to start the Installation directly from Windows. This does not work, insert the DVD into your Computer and start Windows with the changed Boot order
- Have you only a Download Version of Windows, you can Windows from a USB Stick install.

Windows 7 uninstall

Windows 7 from a USB Stick to boot
In the next practical tip we show you how you can Windows 7 to Windows 8.1 update.
