Microsoft last year announced that nearly 50% of all Windows 7 installations are 64 bit out there. The same reasoning can be applied to Windows 7 32 and 64 bit. We recently looked at how to dual boot Windows 7 and Windows XP for compatibility reasons. I get this question a lot ‘How do I downgrade from Windows 7 64 bit to Windows 7 32 bit?’ or ‘How do I upgrade from Windows 7 64 bit to Windows 7 32 bit?’ and the reasons are valid in most cases.