Lenovo ThinkPad 1 Gen Z13, User Manual, Page: 51 / 72

• Total Memory Encryption setting change in UEFI BIOS
• UEFI BIOS update (Memory Reference Code [MRC] change)
When memory retraining occurs, the screen cannot display the progress information and might be blank. You
might see the LED indicators on ESC, F1, and F4 blinking sequentially to indicate the progress. Do not press
the power button to interrupt the process. Wait a few minutes until the logo screen is displayed.
Switch the security chip
Your computer may come with 2 types of security chips (Discrete TPM 2.0 and Pluton TPM 2.0). The Pluton
TPM 2.0 security chip is only applicable on Windows 11. Before you switch to other operating systems, you
should also switch security chip from Pluton TPM 2.0 to Discrete TPM 2.0.
Note: when you switch the security chip, the content in the security chip will be cleared, such as BitLocker
encryption key.
1. If you are using the Windows BitLocker® Drive Encryption feature, ensure that you have disabled the
feature.
2. Select the security chip for your purpose.
a. Restart the computer. When the logo screen is displayed, press F1 to enter the UEFI BIOS menu.
b. Select Security ➙ Security Chip and press Enter. The Security Chip submenu opens.
c. Select security chip from the menu. Ensure that the security chip for Discrete TPM 2.0 is set to
Active .
d. Press F10 to save the settings and exit.
Reset system to factory defaults
This feature allows you to initialize the UEFI BIOS to the factory default state, including all UEFI BIOS settings
and internal data. It helps you wipe user data in case that you want to dispose of or reuse your computer.
Note: If you permanently disable Intel AMT control and Absolute Persistence(R) Module in UEFI BIOS,
you can not reset even if you reset the system to factory default.
How to reset system to factory default
1. Restart the computer. When the logo screen is displayed, press F1 to enter the UEFI BIOS menu.
2. Select Security ➙ Reset System to Factory Defaults and press Enter.
3. A series of warning windows might pop up. Your might be required to do the following before resetting
the system to factory default.
a. Reset the Certificate-based BIOS Authentication. Refer to “Certificate based BIOS management” on
page 39.
b. Deactivate the Absolute Persistence Module.
c. Remove the NVMe password if your have set one.
4. For computer model with RAID settings, a window pops up to remind you of data damage.
5. If you select Yes , a window pops up to confirm your current operation.
6. If you select Yes , a windows pops up. Enter your supervisor password, system management password
or power-on password.
7. Then, your computer will restart immediately. It take several minutes to complete the initialization.
Note: This initialization process may require the screen to be blank. This is normal and you should not
interrupt the process.
Chapter 5
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Configure advanced settings
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