how to downgrade windows 7 to windows vista

If the system does not include an optical drive, then the OEM is required to provide a hard drive-based recovery solution for that version of Windows Vista software. OEMs are required to distribute physical recovery media in the system packaging for the Windows Vista Business or Ultimate version that corresponds to the COA.Each system must be distributed with a Windows Vista Business or Windows Vista Ultimate Certificate of Authenticity (COA) and must have the appropriate activation markers for both OA (OEM Activation) 2.X and OA 1.0.OEMs may now choose to install Windows XP Professional or Windows XP Professional Tablet PC or Windows XP Professional X64 editions instead of Windows Vista Business / Ultimate, provided they meet the following additional requirements : However, Microsoft is enhancing the End User downgrade facilitation options for downgrading Windows Vista Business or Windows Vista Ultimate systems to Windows XP Professional. Windows Vista Business and Windows Vista Ultimate remain the only Windows Vista editions that have End User downgrade rights. Installing DirectX 9 Can & Will Kill DirectX 10.Latest Details On Windows Vista Service Pack 2.Windows Vista Service Pack 2's Latest Release Schedule.Microsoft Office 2007 Service Pack 2 Details.

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How to downgrade windows 7 to windows vista