Windows 7, Windows 8 & Windows 8.1

Windows 7 disclaimer:

Systems may require upgraded and/or separately purchased hardware to take full advantage of Windows 7 functionality. Not all features are available in all editions of Windows 7. See http://www.microsoft.com/windows/windows-7/ for details.

Windows 8 and Windows 8.1 disclaimer:

Not all features are available in all editions of Windows 8. And Windows 8.1.Systems may require upgraded and/or separately purchased hardware, drivers and/or software to take full advantage of Windows 8 and Windows 8.1 functionality. See http://www.microsoft.com/windows/ for details.

Windows 7 downgrade from Windows 8:

This system is preinstalled with Windows 7 Professional software and also comes with a license and media for Windows 8 Pro software. You may only use one version of the Windows software at a time. Switching between versions will require you to uninstall one version and install the other version. You must back up all data (files, photos, etc.) before uninstalling and installing operating systems to avoid loss of your data. See http://www.microsoft.com/windows/ for details.

Windows 7 downgrade from Windows 8.1:

This system is preinstalled with Windows 7 Professional software and also comes with a license and media for Windows 8.1 Pro software. You may only use one version of the Windows software at a time. Switching between versions will require you to uninstall one version and install the other version. You must back up all data (files, photos, etc.) before uninstalling and installing operating systems to avoid loss of your data. See http://www.microsoft.com/windows/ for details.

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