What s wrong with my laptop turning on the fan and stopping

The power supply is not normal, it is recommended to check the power supply.

The computer is turned on, and the power fan turns and does not respond, which may be due to the following reasons.

1. First of all, it can be a switch problem, such as a bad contact. We turn off the switch on the back of the computer, or simply unplug it. etc. will be reinserted.

2. If it doesn't work, it may be that the computer has static electricity, causing adverse reactions. We can find a piece of metal wire to help with the computer screws, and the other end to connect the metal at home that is in contact with the ground. It is better to buy steel wire to be beautiful.

3. It is also possible that the memory module is in poor contact, which is quite possible. Remove it and wipe it clean with an eraser. Then plug it back in, to be steady. Dual memory note compatible.

4. Computer fan problems. Fan problems will cause the system to determine that there is no fan, and in order to protect the computer motherboard, the computer will be forcibly stopped. Solution: Check whether the fan is in good contact. Reinstall. It's best to add some heat sink.

5. Graphics card problems. It's also quite possible. Most of them are poor contact. Simply remove it and reinstall it. The screws should be tightened. The installation should be stable and slow.

6. Motherboard problems, if it's okay. That could be the motherboard. If this is the problem, then you can only go to the repair shop to check if there are any problems such as bad sectors.

The main performance of the fan is reflected in the following aspects: speed, fan blade shape, fan blade, and CPU fan.

1. Angle and bearing system. In general, the speed of the fan is indicated on the manual of the radiator. Generally speaking, 30% of the heat dissipation effect of a radiator depends on the speed of the fan.

But the higher the fan, the better. The correct fan speed should be determined according to the heat generated by the CPU, and the fan speed selection of different specifications should be differentiated.

The basic principle is: under the premise of generating the same air volume, the larger the fan, the lower the speed, and the noise will also be smaller, generally between 3500 rpm and 5200 rpm is more conventional.

2. The greater the power, the stronger the fan wind, and the better the heat dissipation effect. The power of the fan is directly related to the speed of the fan, that is to say, the higher the speed of the fan, the more powerful the fan. At present, the best fans in the general computer market are DC 12V, and the power varies from W to W, so the power needs to be selected according to the heat generated by your CPU.

3. A better radiator, there will be no burrs on the edge, no deformation of the heat dissipation fins, smooth bottom without cracks, neat appearance, generous shape, quality assurance, anti-counterfeiting marks or other characteristic trademarks, etc. In addition, when choosing a radiator, you should also pay attention to the bottom of the radiator should not be too thick, because the thermal conductivity of aluminum is not very good, and too thick will affect the transfer of heat;

In addition, the deflector groove on the surface of the radiator should be denser, which can ensure that the radiator can have a large contact area with the air, so as to enhance the heat dissipation effect. Generally, computer enthusiasts will give the CPU ** water cooling fan when the economy allows, and achieve the effect of rapid cooling through the circulation of liquid.

Take the win10 system as an example, the specific reasons are as follows:

1. The laptop will emit a lot of heat when it is running, and if the heat cannot be dissipated quickly, it will cause the temperature of the laptop to be very high, so that the laptop fan will keep rotating.

2. The laptop fan keeps turning, it may be a problem with the settings, you can open the control panel of the computer and click "Hardware and Sound". In the hardware and sound interface, click "Power Options", click "Change Plan Settings", and in the pop-up window, click "Change Advanced Electricity and Quiet Source Settings". Then click on "Processor Power Management", set the system cooling mode to "Passive", and then click OK to quit, so that the laptop fan will not keep turning.

3. If the air outlet of the laptop is blocked, resulting in a decrease in heat dissipation capacity, the temperature of the laptop will rise soon, which will cause the fan of the laptop to rotate all the time.

4. If the switch chip of the notebook fan is broken, it will be turned on all the time, so that the notebook will keep turning as soon as it is turned on, and it can be sent to the computer repair department for repair.