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  1. #131
    theog's Avatar

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    Downgrade Windows 8 Preinstalled to Windows 7


    How to Downgrade Windows 8 Preinstalled to Windows 7


    Last edited by Brink; 01 Mar 2014 at 01:52 PM.


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  2. #130
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    Quote Originally Posted by Marco90 View Post
    Sony does not support windows 7 for my laptop. So they wont help me.
    I would make a thread here
    Drivers - Windows 7 Support Forums
    one of are Sony experts may be able to help.

    For better help with problems, Can you post your specs.

    Filling out System Specs - Windows 7 Support Forums

    System Info - See Your System Specs - Windows 7 Support Forums


      My System SpecsSystem Spec

  3. #131



    New Member

    Join Date : Feb 2013
    Posts : 1
    Win 8
    USA us california


    HI:

    I am having problems with the getting into the HP Envy m6 1105dx Lap Top to disable the Secure Boot UEFI feature which is on by default so that I can install the OEM Win 7, 64 bit service pack 1. HP hasn't got the answer and MS won't talk unless I by the Full Install Version. In any case this new rig was going to be used for online study and the university virtual classrooms do not support Win 8. HELP Rick
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  4. #132
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    Quote Originally Posted by Rick Martin View Post
    HI:

    I am having problems with the getting into the HP Envy m6 1105dx Lap Top to disable the Secure Boot UEFI feature which is on by default so that I can install the OEM Win 7, 64 bit service pack 1. HP hasn't got the answer and MS won't talk unless I by the Full Install Version. In any case this new rig was going to be used for online study and the university virtual classrooms do not support Win 8. HELP Rick
    Quote Originally Posted by theog
    3) Reset BIOS to default, and reboot to BIOS make sure Secure Boot is disabled.

    [B]NOTE: Check your manufacturer's uEFI/BIOS firmware manual for settings.

    Make sure CSM is ENABLED, & set to UEFI boot.
    Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube
      My System SpecsSystem Spec

  5. #133



    Junior Member

    Join Date : Mar 2013
    Posts : 3
    windows 8
    Pakistan


    When i boot uefi usb , than instead of getting the message "press any key to continue " , i got a file explorer of my usb drive .. help me i want rid of windows 8 ! I have hp sleekbook 15 comes with preinstalled windows 8 !
      My System SpecsSystem Spec

  6. #134
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    Quote Originally Posted by RANA View Post
    When i boot uefi usb , than instead of getting the message "press any key to continue " , i got a file explorer of my usb drive .. help me i want rid of windows 8 ! I have hp sleekbook 15 comes with preinstalled windows 8 !
    Quote Originally Posted by theog View Post
    To Downgrade to Windows 7.

    Downgrade Windows 8 to Windows 7

    Warning you must have the uEFI/BIOS firmware setting in Step Three set.

    Quote Originally Posted by theog
    3) Reset BIOS to default, and reboot to BIOS make sure Secure Boot is disabled.

    NOTE: Check your manufacturer's uEFI/BIOS firmware manual for settings.

    Make sure CSM is ENABLED, & set to UEFI boot.
    Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube

    Also enable Boot Menu.


    Things to check, Make sure you are doing, Work down this list
    1) setting BIOS.
    2) doing Step 11 in
    UEFI Bootable USB Flash Drive - Create in Windows
    3) booting DVD/USB in UEFI mode.
    4) using a USB 2.0 port.
    5) using Windows 7 x64.
      My System SpecsSystem Spec




  7. #135



    Junior Member

    Join Date : Mar 2013
    Posts : 3
    windows 8
    Pakistan


    Thanks theog !
    I was not using 64bit version and also not make my usb ready as described in step 2!
      My System SpecsSystem Spec

  8. #136



    Junior Member

    Join Date : Mar 2013
    Posts : 3
    windows 8
    Pakistan


    Quote Originally Posted by theog View Post
    Quote Originally Posted by RANA View Post
    When i boot uefi usb , than instead of getting the message "press any key to continue " , i got a file explorer of my usb drive .. help me i want rid of windows 8 ! I have hp sleekbook 15 comes with preinstalled windows 8 !
    Quote Originally Posted by theog View Post
    To Downgrade to Windows 7.

    Downgrade Windows 8 to Windows 7

    Warning you must have the uEFI/BIOS firmware setting in Step Three set.

    Quote Originally Posted by theog
    3) Reset BIOS to default, and reboot to BIOS make sure Secure Boot is disabled.

    NOTE: Check your manufacturer's uEFI/BIOS firmware manual for settings.

    Make sure CSM is ENABLED, & set to UEFI boot.
    Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube

    Also enable Boot Menu.


    Things to check, Make sure you are doing, Work down this list
    1) setting BIOS.
    2) doing Step 11 in
    UEFI Bootable USB Flash Drive - Create in Windows
    3) booting DVD/USB in UEFI mode.
    4) using a USB 2.0 port.
    5) using Windows 7 x64.

    I had follow every step , but after booting windows i got following error "Windows failed to start. A recent hardware or software change might be the cause "
    FILE : \windows\system32\boot\winload.efi
    The selected enry could not be loaded !

    What to do ?
      My System SpecsSystem Spec

  9. #137
    theog's Avatar

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    Quote Originally Posted by RANA View Post
    I had follow every step , but after booting windows i got following error "Windows failed to start. A recent hardware or software change might be the cause "
    FILE : \windows\system32\boot\winload.efi
    The selected enry could not be loaded !

    What to do ?
    Where do you buy your DVD from?
      My System SpecsSystem Spec

  10. #138



    Junior Member

    Join Date : Mar 2013
    Posts : 3
    Win 8


    I have a notebook Acer Aspire V3-571 with Win 8 preinstalled.

    I try to install Windows 7 with UEFI Bios following this guide. I can disable Secure Boot. But I have no option to enable CSM, because the BIOS setup has very few options.

    So Windows 7 installation hangs when is loading disk.sys. I have been searching and the problem is with CSM

    "Windows 7 requires the CSM (compatibility support module, e.g. legacy mode) to be enabled in BIOS setup. Specifically, Windows 7 video drivers require the CSM. While it is technically true that Windows 7 itself can support a legacy-free (CSM disabled) UEFI installation, not all OEM component drivers were updated for legacy-free.
    So, the video driver will not function properly when the CSM is disabled. If you want to use Windows 7 on your system, you have to leave the CSM enabled.

    Any suggestions?
      My System SpecsSystem Spec

  11. #139
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    Quote Originally Posted by javif View Post
    I have a notebook Acer Aspire V3-571 with Win 8 preinstalled.

    I try to install Windows 7 with UEFI Bios following this guide. I can disable Secure Boot. But I have no option to enable CSM, because the BIOS setup has very few options.

    So Windows 7 installation hangs when is loading disk.sys. I have been searching and the problem is with CSM

    "Windows 7 requires the CSM (compatibility support module, e.g. legacy mode) to be enabled in BIOS setup. Specifically, Windows 7 video drivers require the CSM. While it is technically true that Windows 7 itself can support a legacy-free (CSM disabled) UEFI installation, not all OEM component drivers were updated for legacy-free.
    So, the video driver will not function properly when the CSM is disabled. If you want to use Windows 7 on your system, you have to leave the CSM enabled.

    Any suggestions?
    Some OEM manufacturers are locking end-users out of the options in BIOS on consumer PC’s, on business PC’s there not.



    Windows Hardware Certification Requirements for Client and Server Systems




    Quote Originally Posted by Microsoft
    Mandatory. On non-ARM systems, the platform MUST implement the ability for a physically present user to select between two Secure Boot modes in firmware setup: "Custom" and "Standard". Custom Mode allows for more flexibility as specified in the following:

    It shall be possible for a physically present user to use the Custom Mode firmware setup option to modify the contents of the Secure Boot signature databases and the PK. This may be implemented by simply providing the option to clear all Secure Boot databases (PK, KEK, db, dbx), which puts the system into setup mode.

    If the user ends up deleting the PK then, upon exiting the Custom Mode firmware setup, the system is operating in Setup Mode with SecureBoot turned off.

    The firmware setup shall indicate if Secure Boot is turned on, and if it is operated in Standard or Custom Mode. The firmware setup must provide an option to return from Custom to Standard Mode which restores the factory defaults. On an ARM system, it is forbidden to enable Custom Mode. Only Standard Mode may be enabled.

    Technical Note: UEFI BIOS vs. Legacy BIOS - YouTube

    You can try Legacy mode.
      My System SpecsSystem Spec

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