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critical HP
Error Code Fan error message - 90B
Failed boot-up due to fan-related malfunction leading to system shutdown, data loss or possible hardware damage.
? What Causes This
Defective fans or airflow obstruction affecting the correct operation of thermal components.
✓ How to Fix It
Update BIOS/firmware and verify thermal parameters. Service technician inspection might be necessary if issues persist.
Source: page 140 of the official manual
From the manual
This error code appears in:
HP Zbook 15 G3 Mobile Workstation