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Table 5-3
Computer Setup—Advanced (for advanced users) (continued)
Option
Recovery from Network
Recover after Boot
Failure
Secure Boot
Configuration
System Options
50
Chapter 5 Computer Setup (F10) Utility
Heading
Allows network recovery as the primary source.
Allows the system to initiate recovery after failing to find a valid boot source.
Configure Legacy Support and Secure Boot
Lets you turn off all legacy support on the computer, including booting to DOS, running legacy graphics
cards, booting to legacy devices, and so on.
Lets you make sure an operating system is legitimate before booting to it, making Windows resistant to
malicious modification from preboot to full OS booting, preventing firmware attacks. UEFI and Windows
Secure Boot only allow code signed by pre-approved digital certificates to run during the firmware and OS
boot process.
Legacy Support Enable and Secure Boot Disable
Legacy Support Disable and Secure Boot Enable
Legacy Support Disable and Secure Boot Disable
Default is 'Legacy Support Disable and Secure Boot Disable'.
Secure Boot Key Management
Lets you manage the custom key settings.
Import Custom Secure Boot keys
Default is disabled.
Clear Secure Boot Keys
Lets you delete any previously loaded custom boot keys. Clearing keys will disable secure boot. Default is
disabled.
Reset Secure Boot keys to factory defaults
Default is disabled.
Enable MS UEFI CA key
Disabling this setting alters the Secure Boot key list to further restrict the allowed software
components. Set this option to 'disable' to support Device Guard.
Turbo boost
Intel Turbo Boost Technology (TBT) automatically allows processor cores to run faster than the base
operating frequency if it is operating below power, current, and temperature specification limits. Default
is enabled.
Hyperthreading (enable/disable)
Delivers two logical processors that can execute multiple tasks simultaneously using the shared hardware
resources of a single processor core. Default is enabled.
Multi-processor
Use this option to disable multi-processor support under the operating system. Default is enabled.
Virtualization Technology (VTx) (Intel only)
Controls the virtualization features of the processor. Changing this setting requires turning the computer
off and then back on. Default is disabled.
Virtualization Technology for Directed I/O (VTd) (Intel only)
Controls virtualization DMA remapping features of the chipset. Changing this setting requires turning the
computer off and then back on. Default is disabled.

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