"operating system not found" message when trying to install windows 7

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  1. lalala87
    Posts : 6
    windows 8
    Thread Starter
       New #11

    i followed the instruction in theog's sony link and i am now in the "select where to install screen" and there are many partitions.i select the biggest one ,i format it and it says that windows cannot be installed cause its of the gpt partition style.what should i do?
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  3. theog
    Posts : 11,408
    ME/XP/Vista/Win7
       New #12

    theog said:
    what can i do?or is there some hardware problem
    Downgrading to Windows 7 will not repair hardware problem?

    Check the NETWORK card drivers are installed.

    gregrocker said:
    It requires disabling Secure Boot first to upgrade a Win8 PC to Win7: UpDowngrade Windows 8 to Windows 7.

    Then follow these special steps to install to UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with - Windows 7 Forums

    Did you look at the two tutorial gregrocker linked you to?
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