How it works
Event Viewer displays recorded Windows events from different logs. An entry’s level, source, time and details provide context. A critical entry may record the consequence of an interruption rather than its original cause, so counting red icons alone is not a diagnosis.
A practical example
After a sudden power loss, an unexpected-shutdown event records that normal shutdown did not finish. It does not by itself identify whether power supply, battery, overheating or another fault caused the interruption. Match the record to the actual symptom and preceding events.
What to check
Record the time of the problem and inspect relevant entries around it. Save the complete message and event identifier, including source, rather than only a screenshot of the level. Compare repeatable incidents and redact usernames or other private information before sharing logs.
Limits and safe next steps
Normal systems can contain warnings and errors. Do not buy repair tools merely because a caller points to those entries. Avoid clearing useful evidence before diagnosis, and do not disable services based solely on an unfamiliar message.