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Installing Windows 7

Hey
I'd like to upgrade my system, Vista Ultimate 64bit OS retail with Windows 7 ultimate 64bit OEM upgrade version that I recently bought. I've heard that I need a system installed to be able to use the upgrade, that's ok, but my question would be:
If I use the W7 OS on my old Vista, will I lose the license and rights to go back to Vista 32 or 64bit again?

Thx
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  1. lilleenga said:
    Hey
    I'd like to upgrade my system, Vista Ultimate 64bit OS retail with Windows 7 ultimate 64bit OEM upgrade version that I recently bought. I've heard that I need a system installed to be able to use the upgrade, that's ok, but my question would be:
    If I use the W7 OS on my old Vista, will I lose the license and rights to go back to Vista 32 or 64bit again?

    Thx


    The update says: Pre-existing OS license required...
  2. Never mind...
  3. Best answer
    Hello lileenga,

    FYI, when upgrading from Windows Vista to Windows 7 you must upgrade the version currently installed within Windows Vista to the corresponding version in Windows 7. I.E. Windows Vista Home Premium to Windows 7 Home Premium; Windows Vista Business to Windows 7 Professional; and Windows Vista Ultimate to Windows 7 Ultimate. You also cannot upgrade a 32-bit operating system to 64-bit -- to migrate from 32-bit to 64-bit will require a custom install.
    Please check out the requirements here for Windows 7:
    If you want to run Windows 7 on your PC, here's what it requires:
    •1 gigahertz (GHz) or faster 32-bit (x86) or 64-bit (x64) processor
    •1 gigabyte (GB) RAM (32-bit) or 2 GB RAM (64-bit)
    •16 GB available hard disk space (32-bit) or 20 GB (64-bit)
    •DirectX 9 graphics device with WDDM 1.0 or higher driver
    You can find the official Microsoft Windows Upgrade Advisor here:
    http://tinyurl.com/no4xb7

    Before making any attempts at upgrading your Windows operating sytem; you should first backup all of your important data!
    You can also go with the easy transfer, there is a very well planned out tutorial on the microsoft site:
    http://tinyurl.com/yz2uogt

    Also, please refer to Microsoft official site:
    Windows 7 Compatibility: (There you will find out about hardware and software compatibilty.)
    http://www.microsoft.com/windows/compatibility/en-us/default.aspx
    There is a pulldown from which you can choose "hardware" and "software".

    Finally, if you want to do some research; there are also some great articles, instructional videos and such to help with your Windows 7 migration and upgrade decisions located at our Springboard site:
    http://technet.microsoft.com/en-us/windows/default.aspx

    Thanks again and good luck!

    John M.
    Microsoft Windows Client Support
  4. Best answer selected by lilleenga.
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