Beep Errors; Memory Module Problems; Networking Problems - Lenovo thinkpad 13 User Manual

Beep errors

Table 5. Beep errors
Beeps
One short beep, pause, three short beeps, pause, three
more short beeps, pause, and one short beep (1-3-3-1
beeps)
Four cycles of four short beeps
Five short beeps, pause, five more short beeps, and
pause

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. Verify that the memory module is installed and seated correctly in your computer.
It might be necessary to remove all added memory modules to test the computer with only the
factory-installed memory modules, and then reinstall the memory module one at a time to ensure
a proper connection.
2. Check for error messages during startup.
Follow the appropriate corrective actions for power-on self-test (POST). See "Error messages" on
page 78.
3. Verify that the latest UEFI for your model has been installed.
4. Verify the proper memory configuration and compatibility including the maximum memory size and the
memory speed.
5. Run diagnostic programs. See "Diagnosing problems" on page 77.

Networking problems

The following are the most common networking problems.
Ethernet problems
• Problem: The computer cannot connect to the network.
Solution: Make sure that:
– The cable is installed correctly.
The network cable must be securely connected both to the Ethernet connector of your computer and
to the RJ45 connector of the hub. The maximum allowable distance from the computer to hub is
100 meters. If the cable is connected and the distance is within acceptable limits but the problem
persists, try a different cable.
– You are using the correct device driver. To install the correct driver, do the following:
1. Open Control Panel and click Hardware and Sound ➙ Device Manager. If you are prompted for
an administrator password or confirmation, type the password or provide confirmation.
Solution
Memory problem. Shut down the computer immediately
and have the computer serviced.
*
TCG -compliant functionality-related problem (might be
the TPM initialization failure). Shut down the computer
immediately and have the computer serviced.
*
TCG is the abbreviation for Trusted Computing Group.
TCG-compliant functionality-related problem (might
be the BIOS code validation failure). Shut down the
computer immediately and have the computer serviced.
.
Chapter 8 Troubleshooting computer problems
81