The computer fan is very loud and the main unit turns on three times, and then English is displayed.

There is a problem with the system, and the system needs to be reinstalled.

The reasons and solutions for the high heating noise of the computer are as follows:

1. The weather is too hot, and the inside of the chassis continues to be high, which makes it impossible to dissipate heat in time, resulting in the continuous high-speed operation of the cooling fan, resulting in louder noise.

The machine should be used in a cool room or the room air conditioner should be turned on to control the room temperature to prevent the room temperature from overheating and affecting the computer. If you are using a laptop, it is recommended to purchase a cooling base to assist in heat dissipation.

2. The key Zen computer has been used for a long time without cleaning and maintenance, and a large amount of dust has accumulated on the cooling fan, and the dust and friction between the shaft or the shaft and the bearing cause the operating noise to become larger.

The desktop can remove the side cover of the case and remove the fan dust with a professional dust cleaning device; The laptop can be cleaned with a soft-bristled brush and dust blower to clean the cooling fan. Tips: The above operation is more complicated, non-professionals are recommended to contact Lenovo service network engineers to operate, so as not to cause damage and affect the warranty.

3. Trace balance runs large-scale software or games, the CPU works at full load, and the heat dissipation increases. As a result, the cooling fan will run at full speed, resulting in louder noise.

It is recommended to go to the task manager and end the process with high CPU usage. When running large programs, try not to run other programs to reduce the workload of the CPU and thus reduce the noise.

Example: (The following is how to find high CPU usage, but the program is not limited to the following programs) Right-click on the blank space of the taskbar to bring up "Task Manager"; In the "Task Manager", click the "CPU" column header, and the Task Manager will sort the CPU usage by type. Select a higher program or processRight-click and select End Process, or click End Process in the lower-right corner.

4. The internal wiring of the chassis is abnormal, which causes friction between the cooling fan and the wiring and increases the noise.

It is not recommended that you expand, upgrade, or replace hardware devices on your own, as such operations are risky. If you have any of the above needs, we recommend that you contact your nearest Lenovo service location for professional support. This situation is mostly caused by non-professional disassembly, when Lenovo split desktop machine leaves the factory, the wiring harness has been bundled and sorted out with cable management tape, after disassembly and assembly, please try to restore it to avoid abnormal noise.

When the fan is working, it will produce a certain sound due to the rotation of the fan and the flow of air, which is a normal crack and disturbance. The rotation of the fan is related to the temperature of the CPU, such as the ambient temperature is high, too many running programs or large software will cause the phenomenon of slow CPU temperature increase, when the CPU temperature increases, the fan will rotate more frequently, and the sound will be a little louder. If the sound is particularly loud, or you feel that it is abnormal, it is recommended to go to the nearest official service center to test and confirm, and it is better for the engineer to test it on site.

1.This situation is generally cold weather, resulting in the CPU fan hinge or the oil in the ball frozen, or the power supply fan fan hinge or the ball oil frozen, so that the computer boot sound is particularly loud, generally after the computer runs for a period of time, the computer heats up, the oil melts, and the sound will be normal. This usually happens in winter.

2.If the above statement is excluded, it may be because there is too much dust in the computer, and there is dirt on the fan, which increases the fan resistance, so that the fan cannot operate normally, and the computer sound is particularly loud.

3.There is a problem with one of the fans on your computer, including the power supply fan. It must be that the start-up sound is loud, and it will be good slowly, because the fan bearing is out of oil, and the gap between the bearing and the outer sleeve is very tight when it is just turned on, resulting in a very loud sound, and after rotating for a period of time, the sound will be small due to the increase in the gap between thermal expansion and cold contraction.

The solution is to open the chassis and find the loud fan to add some oil to the bearing, but it won't take long, and the second is to replace it with a new fan.