2. Select Main ➙ BIOS Event log. Then, press Enter. The UEFI BIOS Event log interface is displayed.
3. Navigate the interface by pressing the following keys, and then check details by selecting each item.
• ↑↓: Move keyboard focus
• PgUp / PgDn: Scroll page
• Enter: Select
• F3: Exit
The following UEFI BIOS event logs might be listed on your screen depending on UEFI BIOS activities. Each
log consists of a date, a time, and a description of the event.
• Power On event: This log shows the Power On Self Test (POST) routine has started with the power-on
process. It includes the power-on reason, the boot mode, and the shutdown reason.
• Subcomponent Code Measurement event: This log shows the subcomponent code measurement has
worked. It includes the validation result of each component.
• System Preboot Authentication event: This log shows what credential is provided to gain preboot
authentication. It includes the installed password, the password type, the input device, and the
authentication result.
• BIOS Password Change event: This log shows the change history of the UEFI BIOS passwords. It
includes the password type, the type and result of the event.
• Subcomponent Self-healing event: This log shows the information about the subcomponent where the
recovery event occurred. It includes the cause and result of the event, and the recovered firmware version.
• BIOS Setup Configuration Change event: This log shows the change history of the UEFI BIOS Setup
configuration. It includes the item name and value.
• Device Change event: This log shows the change history of devices. It includes the cause and type of the
event.
• System Boot event: This log shows which device was utilized to boot the system. It includes the boot
option, the description, and the file path list.
• System Tamper event: This log shows the occurrence of system tamper events. It includes the cause and
type of the event.
• POST Error event: This log shows the occurrence of errors during the POST routine. It includes the error
code.
• Flash Update event: This log shows the occurrence of flash update. It includes the cause and result of the
event, and the updated firmware version.
• Set On-Premise event: This log shows the change history of on-premise boot settings. It includes the
value of on-premise settings and the change method.
• Capsule Update event: This log shows the occurrence of UEFI capsule firmware update. It includes the
cause and result of the event, and the updated firmware version.
• Log Cleared event: This log shows UEFI BIOS event logs are cleared. It includes the cause and result of
the event.
• Shutdown / Reboot event: This log shows the UEFI BIOS is successfully shut down or the system is
rebooted. It includes the cause and type of the event.
Customize BIOS Defaults
The feature provides a solution to backup your preferred BIOS Setup settings. It helps you to save the BIOS
Setup settings as customized BIOS default settings, load them to current BIOS settings when needed, and
reset the settings to Setup Defaults.
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X1 Carbon Gen 11 and X1 Yoga Gen 8 User Guide
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