A client has a 64-bit Vista machine and would like to upgrade to Windows 7, not 8. All of the retail versions of Windows 7 are several hundred dollars on-line. There are several reputable companies offering either downloadable or with-media OEM versions for less than $100.
Will he be able to perform an upgrade from Vista Home Premium to 7 Home Premium if he buys one of these licenses? Or will he have to migrate all the programs and data with a reformat?