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UEFI diagnostic code fields

For each event code, the following fields are displayed:

Event identifier
An identifier that uniquely identifies an event.
Event description
The logged message string that appears for an event. When the event description is displayed in the event log, information such as a specific component is displayed. In this documentation, that additional information appears as variables, indicated by a percent sign ( % ).
Explanation
Additional information to explain why the event occurred.
Severity
An indication of the level of concern for the condition. The severity is abbreviated in the event log to the first character. The following severities can be displayed.
Table 1. Severity levels
SeverityDescription
InformationalAn informational message is something that was recorded for audit purposes, usually a user action or a change of states that is normal behavior.
WarningA warning is not as severe as an error, but if possible, the condition should be corrected before it becomes an error. It might also be a condition that requires additional monitoring or maintenance.
ErrorAn error typically indicates a failure or critical condition that impairs service or an expected function.
User response
Indicates what actions you should perform to resolve the event.

Perform the steps listed in this section in the order shown until the problem is solved. After you perform all of the actions that are described in this field, if you cannot solve the problem, contact Lenovo Support.