Turn on the computer, the electric fan turns and stops, why?

One could be that you don't have enough power to power you.

Second, there is a problem with the main version, which needs to be detected and may be relatively high.

The three fans can be removed and cleaned down.

I don't know exactly what you're talking about here: the fan of the power supply, or the CPU or the graphics card?

If you have used it before, I think most of it is caused by poor contact, it will not be a big problem, it is recommended to open the case and plug the IDE bus and some power cables back in again, keep their contact good.

I guess that's enough to solve the problem!

That's mostly caused by loose wiring or poor contact between the power supply and the motherboard, and it should be okay to re-coil them and plug them in by yourself (if it's an assembly machine).

First, it is caused by insufficient power supply. It is advisable to check the power supply, or replace the power supply!

The second is that there is a problem with the interface of the CPU fan. This interface may be the interface with the motherboard, or it may be the wire and fan interface, if it is this problem, you can change the fan to test it, and you will know it by trying. If it's a problem with the fan itself, it's good to change the fan, if it's a problem with the interface with the motherboard, then the problem is big, but before you make sure that there is a problem with the motherboard interface, you must first confirm that the fan you used for testing is good.

The third is the motherboard problem, some boards are of poor quality, resulting in this kind of problem, or the board is aging.

Fourth, the fan shaft is aging, that is, it can't start normally, but it can be used with the help of external forces, which means that the fan is too worn, just change the fan.

Five, there is a problem with the graphics card. Please use an eraser to erase the gold finger of the graphics card and clean the dust in the graphics card slot. If it doesn't work when you plug it in, please borrow a good graphics card and try it.

Sixth, the power supply problem, insufficient voltage can also cause this, so please replace the power supply to try.

Seven no more, please remove the motherboard battery, then use both ends of the battery to put the positive and negative levels of the base, press and hold it for 1 minute, and then put the battery back. This is done by discharging the motherboard.

1. The power supply is aging and damaged, which is often manifested as the fan stops when it turns, and it can be solved by replacing the power supply. 2. The power switch is damaged. This is not often easy to shout, unplug the power switch to the positive and negative poles of the motherboard switch, and use a screwdriver to short the positive and negative poles, if you can light up the computer, the switch is undoubtedly damaged.

Or static electricity. When upgrading the memory, pay attention to unplugging the power cord, and it is best to touch the radiator or the like to put your own static electricity. At present, it is best to remove the battery on the motherboard to unplug the power cord, press and hold the power button of the chassis for a few times, and then quickly press the power button a few times to release the static electricity in the chassis.

This answer applies to Lenovo Pro 13 and Dell Latitude 9510 brand computer models.

The situation where the computer turns on the fan and stops and then turns again can be caused by one of the following reasons:

BIOS settings: In some computers, BIOS settings can affect how the fan operates. Check the fan-related options in the BIOS settings to make sure they are configured correctly.

Temperature control: A computer's fan is usually controlled by a temperature sensor. If the temperature of the computer is low, the fan may stop running to save energy. When the temperature rises, the fan restarts to cool down your computer. This is a normal way of working.

Fan failure: The fan itself may be faulty, such as a motor problem or a circuit problem. If the fan is not running properly or starts and stops frequently, the fan may need to be replaced.

Power supply issues: An unstable power supply can also cause fans to start and stop. Check the power connection and power supply of the computer to ensure that the power supply is stable and old.

When the computer is turned on, the fan stops with a single turn and then restarts for the following reasons: self-ordering.

BIOS settings: Some computers may have fan-specific tuning options in their BIOS settings. Check your BIOS settings to make sure the fan tuning options are configured correctly. It may need to be set to auto-adjust or appropriate fan speed.

Temperature control: A computer's fan is usually controlled by a temperature sensor to ensure that the temperature of the components is within a safe range. When the computer is first turned on, the temperature may not be enough to trigger the fan to turn. As soon as the temperature starts to rise, the fan restarts to lower the temperature.

Faulty fan: There is a possibility that the fan itself is faulty or damaged. Check the fan for signs of squeak or jamming. If you're having trouble with your fan, you may need to replace it to make sure the heat is dissipated properly.

Power supply issues: Power supply** may be related to fan operation. Check that the power supply is securely connected and the power cord is secure to ensure that the power supply is capable of providing enough power**.

Other hardware issues: In addition to the fan itself, other hardware components can also cause the fan to stall. For example, a sensor or circuit issue on the motherboard can cause the fan to not work properly.

In this case, more in-depth troubleshooting or consulting with a professional technician may be required.