Welcome to the Toshiba Support Forum, created for customers and enthusiasts to share knowledge, solve problems and discuss technology. To join the discussion, please login or register.
Results 1 to 6 of 6

Thread: How to downgrade Qosmio Windows 8 to Windows 7 64bit

  1. How to downgrade Qosmio Windows 8 to Windows 7 64bit
    #1
    Beginner
    Join Date
    Oct 2013
    Posts
    4
    We have recently purchased Toshiba QOSMIO X75-A7295 with Windows 8 Home edition.

    How do we downgrade the windows 8 Home edition to Window 7 enterprise 64 bit

    I have also tried going into the BIOS to change the boot order but it does not boot from the Windows7 DVD but boots up windows8

    How I install Windows 7 in Toshiba QOSMIO X75-A7295
    .Do i need to change any other setting in BIOS.

    How do we resolve this issue?


    Thanks
    JasimT

  2. Re: How to downgrade Qosmio X75-A7295 Windows 8 to Windows 7 64bit
    #2
    Hi

    Go to BIOS.
    Disable the secure boot, and change from UEFI to CSM mode.
    Save the changes and now you should be able to boot from Win 7 disk.

    Feedback much appreciated.

  3. Re: How to downgrade Qosmio Windows 8 to Windows 7 64bit
    #3
    Master
    Join Date
    Sep 2009
    Posts
    2,241
    More info about Win7 installation you can find on
    http://aps2.toshiba-tro.de/kb0/TSB2B03EX0002R01.htm and
    http://aps2.toshiba-tro.de/kb0/TSB2C03F80002R01.htm

    Good luck.

  4. Re: How to downgrade Qosmio X75-A7295 Windows 8 to Windows 7 64bit
    #4
    Beginner
    Join Date
    Oct 2013
    Posts
    4
    Thanks TomDexter and Macius

    I really appreciate your detailed instructions.

    I found the following details on the right side of BIOS Advanced Option while select the boot Mode

    "Select the boot Mode

    .(UEFI Boot )
    Support to boot any UEFI-capable OS.
    (CSM Boot )
    Support to boot non UEFI-capable OS that expects a legacy BIOS interface. This item does not revert back to its default value by Load Setup Defaults Action ".

    I need to clarify this .Now we are planning to install Windows 7 Enterprise SP1 . If I select CSM boot on BIOS.. In future we may need to upgrade this laptop to Windows 8.1 Pro . . Is it possible to change the boot mode CMS boot to UEFI Boot on Futur .
    Please inform me .It can or cannot ?

    Can I go ahead with installation of Windows 7 Enterprise SP1 on this laptop Toshiba Qosmio X75-A7295 now

    Many thanks and regards
    Jasim.

    Message was edited by: jasim.tp

  5. Re: How to downgrade Qosmio X75-A7295 Windows 8 to Windows 7 64bit
    #5
    Beginner
    Join Date
    Oct 2013
    Posts
    4
    I really appreciate the clear instructions.

    I found the following details on the right side of BIOS Advanced Option while select the boot Mode

    "Select the boot Mode

    .(UEFI Boot )
    Support to boot any UEFI-capable OS.
    (CSM Boot )
    Support to boot non UEFI-capable OS that expects a legacy BIOS interface. This item does not revert back to its default value by Load Setup Defaults Action ".

    I need to clarify this .Now we are planning to install Windows 7 Enterprise SP1 . If I select CSM boot on BIOS.. In future we may need to upgrade this laptop to Windows 8.1 Pro . . Is it possible to change the boot mode CMS boot to UEFI Boot on Futur .
    Please inform me .It can or cannot ?

    Can I go ahead with installation of Windows 7 Enterprise SP1 on this laptop Toshiba Qosmio X75-A7295 now

    Many thanks and regards
    Jasim.

  6. Re: How to downgrade Qosmio X75-A7295 Windows 8 to Windows 7 64bit
    #6
    Senior Member
    Join Date
    Sep 2012
    Posts
    410
    > Is it possible to change the boot mode CMS boot to UEFI Boot on Future .
    Why not. Of course you can do this. OD downgrade has nothing to do with BIOS and BIOS will not change at all.
    > Can I go ahead with installation of Windows 7 Enterprise SP1 on this laptop Toshiba Qosmio X75-A7295 now?
    If your notebook can boot from Win7 installation disc and Win7 set-up works properly you can do this.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •