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Step 3.
Restart the computer.
Step 4.
When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is
displayed.
Step 5.
Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update
Utility for Asset ID screen is displayed.
Step 6.
Type 2 under Enter the action desired, then press Enter.
The serial number of each device in your computer is displayed; the serial number of the system
unit is listed as follows: 20– Serial number
Step 7.
Record the serial number of the system unit.
What to do after you replace the system board
Follow the instructions to restore the serial number of the system unit.
Step 1.
Connect the Maintenance Key to the computer.
Step 2.
When the logo is displayed, press Esc. The ThinkPad Config Information Update Utility interface is
displayed.
Step 3.
Type 1 under Enter the action desired, then press Enter. The ThinkPad Serial Number Update
Utility for Asset ID screen is displayed.
Step 4.
Type 1 under Enter the action desired, then press Enter. Then follow the instructions on the
screen to restore the serial number of the system unit.
Retaining the UUID
The Universally Unique Identifier (UUID) is a 128-bit number uniquely assigned to your computer at
production and stored in the EEPROM of your system board.
The algorithm that generates the number is designed to provide unique IDs until the year A.D. 3400. No two
computers in the world have the same number.
When you replace the system board, perform the following steps to create a new UUID for the system board
if the system board does not have a UUID:
Note: For Intel models, before you perform the operation, ensure that the UEFI/Legacy setting within the
Startup menu in the ThinkPad Setup program is set to UEFI Only.
Step 1.
Connect a USB memory key to the computer.
Step 2.
Go to
https://www.lenovo.com/maintenanceutilities
create a Maintenance Key.
Note: Only an authorized Lenovo service technician can access the above Web site.
Step 3.
Restart the computer.
Step 4.
When the logo screen is displayed, press Esc. The ThinkPad Config Information Update Utility
interface is displayed.
Step 5.
Type 2 under Enter the action desired, then press Enter. The Auto UUID generation utility
interface is displayed.
Step 6.
Type y under Change UUID. OK? [Y/N], then press Enter. A new UUID is created and written. If a
valid UUID already exists, it is not overwritten.
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ThinkPad L13 Gen 5,ThinkPad L13 2-in-1 Gen 5 and ThinkPad S2 Gen 9 Hardware Maintenance Manual
and follow the instructions on the screen to
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