Win7SP1 fails error 0x80070643 - was upgraded from Vista previously


  1. Kikster
    Posts : 1
    Windows 7 Home Premium x86
       New #1

    Win7SP1 fails error 0x80070643 - was upgraded from Vista previously


    Vista 32 bit machine.
    Upgraded to Windows 7 Home Premium 32 bit.
    Now trying to install Windows 7 SP1 and it fails every time. I tried all the suggestions from Microsoft's web site and still does not work.
    Event log tells me that it's error 0x80070643.

    I tried attaching the entire CBS folder but for some reason it won't attach so I attached the individual log files.

    Please help!
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  3. NoelDP
    Posts : 21,482
    Win 7 x64 Home Premium (and x86 VirtualBox VM)/Win10
       New #2

    643 errors are difficult to solve - in your situation, it will probably be easier to do a repair install with an SP1 disk, than to attempt manual repair of the existing installation.

    See here for the instructions - you will need the Home Premium SP1 U Media Refresh download -
    https://www.sevenforums.com/tutorials/3413-repair-install.html
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