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error HP
Error Code LED blinks red twice then white two times
System shutdown due to internal power supply fault or malfunctioning hardware.
? What Causes This
Fault within the power supply unit or other internal hardware issues triggering safety protocols (e.g., short circuits, voltage drops).
✓ How to Fix It
- Replace faulty components identified during diagnosis; typically starts with the power supply.
- Test system stability after replacement of identified faulty part.
Source: page 54 of the official manual
From the manual
This error code appears in:
HP Prodesk 600 G4 Small Form Factor PC