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2. Turn on the computer. When the logo screen is displayed, press the F12 key.
3. Select the device that you want the computer to start from. Then press Enter.
Note: The Boot menu will be displayed if the computer cannot start from any devices or the operating
system cannot be found.
Updating the UEFI BIOS
The UEFI BIOS is the first program that the computer runs when the computer is turned on. The UEFI BIOS
initializes the hardware components, and loads the operating system and other programs.
When you install a new program, device driver, or hardware component, you might be informed to update
the UEFI BIOS. You can update the UEFI BIOS by starting your computer from a flash update disc or a flash
update program running in the Windows environment.
The requirements for flash update are as follows:
The computer must be started over LAN.
The computer must be engaged in the Preboot eXecution Environment (PXE).
A network-management program must be installed on the computer of the network administrator.
For instructions on how to update the UEFI BIOS, go to
https://support.lenovo.com.
BIOS menu
This topic introduces the following BIOS menus of your computer:
Main menu
Config menu
Date/Time menu
Security menu
Startup menu
Restart menu
Note: Depending on the model and operating system, the menu items and the default value might change
without notice.
Main menu
When you enter the ThinkPad Setup program, you first see the Main menu as follows:
Note: The BIOS menu items might change without notice. Depending on the model, the default value might
vary.
UEFI BIOS Version
UEFI BIOS Date
Embedded Controller Version
ME Firmware Version
Machine Type Model
System-unit serial number
System board serial number
Asset Tag
58
X380 Yoga User Guide
76


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