⚠
warning HP
Error Code Power LED blinks red, 1 blink every second followed by a 2-second pause
CPU thermal shutdown triggered.
? What Causes This
Overheating or fan failure.
✓ How to Fix It
Shutdown the system and ensure good ventilation, clean any obstructions around vents.
Source: page 2 of the official manual
From the manual
This error code appears in:
HP Prodesk 600 G1 Small Form Factor PC