!
error HP

Error Code LED blinks red two times

Power failure or potential power supply overload.

? What Causes This

Voltage selector not set correctly, power cable may not be seated properly, or a device might be causing excessive load.

How to Fix It

  1. Check the voltage selector switch and ensure it is set to correct line voltage (e.g., 115V or 230V).
  2. Verify that the power supply cable is securely connected to the system board.
  3. Identify problematic device by isolating each attached device and testing.

Source: page 81 of the official manual

From the manual

Manual page 81 — HP error LED blinks red two times

Affected HP Products