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    My computer is currently running Windows 7 Ultimate SP1 - x64, I'm trying to reinstall system files etc while, keeping most of my files the way they are ( backup is not an option i have around 1TB of personal files and nothing that i can back them up onto) so im attempting to run windows 7 Upgrade install from windows each time it reports back saying you cant upgrade from 32-bit to 64-bit even though im not, any ideas ?

    Thursday, September 5, 2013 12:37 AM

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    besides 32 bit and 64 bit versions there is n versions/volume license versions/ oem version /retails versions of windows 7.

    You need to have exact version of you current windows version beside the architecture (32/64)

    How to find your currnet version of installed windows ? 

    Press windows key and R key together and type winver

    and go to Control Panel\System and Security\Action Center\Windows Activation

    and this path Control Panel\System and Security\System

    and check
    -----------------------------------------------------------------------------------------------

    Hetti Arachchige V Aravinda | Microsoft Community Support | Windows Tech Information

    (B.Sc, Microsoft Small Business Specialist, Dip. in Network Administration, MCP, MCTS,

    MCSA, MCSE, MCITP, CCNA, MBCS)

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    Don't forget to mark this as helpful if you found this is helpful ,and its the answer mark this as answer.

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    • Proposed as answer by Aravindaiud Thursday, September 5, 2013 4:14 PM
    • Unproposed as answer by korans Thursday, September 5, 2013 7:35 PM
    Thursday, September 5, 2013 4:14 PM
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    being as its the same disk it was installed from I'd assume its the same, anyway its the OEM version, build 7601 SP1.

    • Edited by korans Thursday, September 5, 2013 6:17 PM Another Spelling mistake
    Thursday, September 5, 2013 4:47 PM
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    Hi Korans,

    Before performing in-place upgrade installation, there are some warnings you should be taken into consideration.

    Warning:

    • You can only do a repair install with the same edition Windows 7 installation disc for the same edition of Windows 7 that you have installed.
    • You can do a repair install on a factory OEM installation with the latest official Windows 7 with SP1 ISO and use Windows 7 USB-DVD Download Tool to create a bootable DVD or USB flash drive with the ISO to do the repair install from within Windows 7.
    • You can use a retail OEM Windows 7 installation disc to do a repair install with.
    • You can use a retail (full or upgrade) Windows 7 installation disc to do a repair install with.
    • You cannot do a repair install with a System Repair Disc. A System Repair Disc is not a installation disc, and will only boot to the System Recovery Options screen.
    • If you have a 32-bit (x86) Windows 7 currently installed, then you must use a 32-bit Windows 7 installation disc to be able to do a repair install with.
    • If you have a 64-bit (x64) Windows 7 currently installed, then you must use a 64-bit Windows 7 installation disc to be able to do a repair install with.
    • You can use a retail Windows 7 SP1 installation disc (ex: Technet (available), MSDN (available), or retail (when available)) to do a repair install with on a currently installed Windows 7 SP1.
    • You can use a Windows 7 SP1 installation disc (ex: Technet (available), MSDN (available), or retail (when available)) to do a repair install with on a currently installed slipstream Windows 7 SP1.
    • You can only do a repair install from within Windows 7.
    • You cannot do a repair install at boot or in Safe Mode.

    Link for how to perform an in-place upgrade below:

    http://support.microsoft.com/kb/2255099

    Friday, September 6, 2013 10:14 AM
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    Thanks for your reply, but as I said its the exact same disk it was installed from, is there any way I can get more detailed report than the compatibility check as is obviously seeing a problem but its reporting it as something completely different
    Friday, September 6, 2013 10:26 AM
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    How about the service pack ?? May be a service pack is installed during windows update?? 

    -----------------------------------------------------------------------------------------------

    Hetti Arachchige V Aravinda | Microsoft Community Support | Windows Tech Information

    (B.Sc, Microsoft Small Business Specialist, Dip. in Network Administration, MCP, MCTS,

    MCSA, MCSE, MCITP, CCNA, MBCS)

    -----------------------------------------------------------------------------------------------

    Don't forget to mark this as helpful if you found this is helpful ,and its the answer mark this as answer.

    -----------------------------------------------------------------------------------------------

    Friday, September 6, 2013 10:28 AM
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    both my computer and installation disk are SP1
    Friday, September 6, 2013 11:04 AM
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    Hi Korans,

    If you have any prerelease versions of SP1 installed, uninstall them before installing the final release version of SP1.

    Link for how to install Windows 7 Service Pack 1 (SP1) below:

    http://windows.microsoft.com/en-in/windows7/install-windows-7-service-pack-1

    • Proposed as answer by 暁北 Thursday, September 12, 2013 1:12 AM
    • Marked as answer by Cloud_TS Thursday, September 12, 2013 3:15 PM
    Wednesday, September 11, 2013 12:06 PM