Fan error on IBM ThinkPad

Fan error indicates a Fan error. Check whether the power supply interface of the fan is correct. The CPU fan does not pass the self-detection of the motherboard. Check which fan plug has your CPU fan plugged into the motherboard? It should be on "CPU fan" or "fan1". You should insert it on other "system fan" or "fan2, although the fan turns normally, the prompt you mentioned will appear. If you haven't moved the CPU fan plug-in, and suddenly this happens recently, one of the three cables of your CPU fan is broken (the one that tests the wind speed ), or the speed measuring circuit in the internal circuit of the fan is broken, and a new fan can be used to solve the problem. If a new fan is changed, it still prompts that the fan measurement and control circuit on your motherboard is broken and can only be repaired. In addition, go to the bios and look for the CPU fan speed option to see if it is N/".