Lenovo 20JW, User Manual, Page: 106 / 176

Error codes Solutions
0001: Reset error (platform reset not de-asserted) 1. Remove all power resources (the ac power adapter,
removable battery, and coin-cell battery). If your
computer has a built-in battery, reset the computer
by inserting a straightened paper clip into the
emergency-reset hole. Wait for one minute. Then
reconnect all power resources.
2. Replace the system board (service provider only).
0002: Internal bus error
Replace the system board (service provider only).
0281: General embedded controller error Replace the system board (service provider only).
0282: Memory module error 1. Reinstall or replace the memory module.
2. Replace the system board (service provider only).
0283: PCI resource error 1. Remove PCIe devices (the M.2 card, PCIe card,
and so on) (service provider only).
2. Replace the system board (service provider only).
0284: TCG-compliant functionality-related error (might be
the BIOS code validation failure) Replace the system board (service provider only).
0285: TCG-compliant functionality-related error (might be
the TPM initialization failure) Replace the system board (service provider only).
0286: Integrated graphics error Replace the system board (service provider only).
0287: Discrete graphics error 1. Reinstall or replace the discrete graphics card
(service provider only).
2. Replace the system board (service provider only).
0288: Computer display error 1. Reconnect the display cable on both the system
board side and the computer display side (service
provider only).
2. Replace the system board (service provider only).
Memory module problems
Print these instructions now and keep them with your computer for reference later.
Problem : My memory module is not operating properly.
Solution : Check the following items:
1. Verify that the memory module is installed and seated correctly in your computer.
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) error messages.
3. Verify that the latest UEFI BIOS 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 85.
Ethernet problems
• Problem : My computer cannot connect to the network.
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