Lenovo ThinkPad Yoga 12 (English) User Guide - ThinkPad Yoga 12 - Page 104

Beep errors, Memory module problems, Networking problems, Ethernet problems

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• Message: 2201: Machine UUID is invalid. Solution: Machine UUID is invalid. Have the computer serviced. • Message: Fan error Solution: Cooling fan has failed. Have the computer serviced. • Message: Thermal sensing error Solution: The thermal sensor is not functioning correctly. Shut down the computer immediately and have the computer serviced. Beep errors Table 6. Beep errors Problem One short beep, pause, three short beeps, pause, three more short beeps, and one short beep Three short beeps, pause, one short beep, pause, one more short beep, and three short beeps One long and two short beeps Four cycles of four short beeps Five short beeps Five short beeps, pause, five short beeps, and pause Solution Memory problem. Shut down the computer immediately and have the computer serviced. PCI resource problem. Shut down the computer immediately and have the computer serviced. Video problem. Shut down the computer immediately and have the computer serviced. TCG*-compliant functionality-related problem (might be the BIOS code validation failure). Shut down the computer immediately and have the computer serviced. * TCG is the abbreviation for Trusted Computing Group. System board problem. Shut down the computer immediately and have the computer serviced. TCG-compliant functionality-related problem (might be the TPM initialization failure). Continue with the boot process and call the Lenovo service center for technical support. Memory module problems Print these instructions now and keep the instructions with your computer for reference later. If your memory module is not operating properly, check the following items: 1. Check for error messages during startup. Follow the appropriate corrective actions for power-on self-test (POST) error messages. 2. Verify that the latest UEFI BIOS for your model has been installed. 3. Verify the proper memory configuration and compatibility including the maximum memory size and the memory speed. 4. Run the Lenovo Solution Center program. Networking problems The following are the most common networking problems: Ethernet problems • Problem: The computer cannot connect to the network. Solution: Ensure that: 88 User Guide

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•
Message
: 2201: Machine UUID is invalid.
Solution
: Machine UUID is invalid. Have the computer serviced.
•
Message
: Fan error
Solution
: Cooling fan has failed. Have the computer serviced.
•
Message
: Thermal sensing error
Solution
: The thermal sensor is not functioning correctly. Shut down the computer immediately and
have the computer serviced.
Beep errors
Table 6. Beep errors
Problem
Solution
One short beep, pause, three short beeps, pause, three
more short beeps, and one short beep
Memory problem. Shut down the computer immediately
and have the computer serviced.
Three short beeps, pause, one short beep, pause, one
more short beep, and three short beeps
PCI resource problem. Shut down the computer
immediately and have the computer serviced.
One long and two short beeps
Video problem. Shut down the computer immediately and
have the computer serviced.
Four cycles of four short beeps
TCG*-compliant functionality-related problem (might
be the BIOS code validation failure). Shut down the
computer immediately and have the computer serviced.
* TCG is the abbreviation for Trusted Computing Group.
Five short beeps
System board problem. Shut down the computer
immediately and have the computer serviced.
Five short beeps, pause, five short beeps, and pause
TCG-compliant functionality-related problem (might be
the TPM initialization failure). Continue with the boot
process and call the Lenovo service center for technical
support.
Memory module problems
Printtheseinstructionsnowandkeeptheinstructionswithyourcomputerforreferencelater.
If your memory module is not operating properly, check the following items:
1. Check for error messages during startup.
Follow the appropriate corrective actions for power-on self-test (POST) error messages.
2. Verify that the latest UEFI BIOS for your model has been installed.
3. Verify the proper memory configuration and compatibility including the maximum memory size and the
memory speed.
4. Run the Lenovo Solution Center program.
Networking problems
The following are the most common networking problems:
Ethernet problems
•
Problem
: The computer cannot connect to the network.
Solution
: Ensure that:
88
User Guide