¶ 1. Phenomenon description
¶ 2. Cause analysis
2.1 Motor wire damage, short circuit.
2.2 The mainboard cooling fan does not spin, causing the motor driver chip to overheat and error.
¶ 3. Troubleshooting and solution
3.1 Inspect if there are any loose connections or damages to the motor wires.
3.2 Check if the motherboard cooling fan is running normally. If abnormal, refer to the troubleshooting method for fan not spinning to identify the problem.（Fan does not work, Fan abnormal noise ）。