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      How to boot to Legacy device or system configured with Microsoft Windows 7 (32-bit or 64-bit) or Windows 8 (32-bit) - ThinkPad, ThinkCentre, ThinkStation, IdeaCentre


      A Microsoft Windows 7 (32-bit or 64-bit) or Windows 8 (32-bit) preloaded PC may not boot or may fail to boot to other devices such as CD/DVD, USB, network, etc.

      Affected Brands

      • ThinkPad
      • ThinkCentre
      • ThinkStation
      • IdeaCentre

      Affected Systems

      • All

      Operating Systems

      • Microsoft Windows 7
      • Microsoft Windows 8
      • Microsoft Windows 10


      To boot to Legacy devices or system configured with Microsoft Windows 7 (32-bit or 64-bit) or Windows 8 (32-bit):

      1. Restart the PC and press F1 to enter Setup.
      2. For ThinkPad: Navigate to the RESTART menu.
        For ThinkCentre and ThinkStation:  Navigate to the EXIT menu
      3. Select OS Optimized Defaults and change the value to Disabled.
      4. Select Yes to continue to disable the OS Optimized Defaults.
      5. Press F9 to load Setup Defaults.
      6. Select Yes to confirm the loading default configuration.
      7. Press F10 to save and exit Setup.
      8. If necessary, press F12 to access the boot menu and select your boot device.

      Additional Information

      Microsoft requires Lenovo to configure all Microsoft Windows 8 and 10 PCs with the following UEFI firmware (BIOS) settings:

      • UEFI only
      • Secure Boot

      With these settings, it is not possible to boot a Legacy operating system such as DOS or Microsoft Windows XP.  Also, it is not possible to boot an operating system that is not enabled for Secure Boot, such as Microsoft Windows 7 and certain Linux distributions.

      For these reasons, it is not possible to boot many existing diagnostic or backup/restore tools on a Microsoft Windows 8 or 10 PC with default UEFI firmware (BIOS) settings.

      Lenovo recommends using the factory default setting as follows:


       OS Optimized Defaults

       For Windows 8 (64-bit) Preload models


       For Windows 8 (32-bit) or Windows 7 Preload models




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      • Alias ID: SF13-T0024
      • Document ID: HT076905
      • Last Updated :06 Oct 2016
      • © 2016 Lenovo