The computer fan can t turn on, the computer doesn t turn on, the fan keeps turning?

The computer fan keeps turning, just means that the motherboard is powered on.

1. If you press the power button of the host, the power light will not light up or turn off when it is on, replace the switching power supply first.

2. If the power light is on after replacing the switching power supply, but it still can't start, press the num lock key, the num lock light will not light up, this situation is generally the motherboard can not start normally. Please shut down, take out the memory, clean the memory gold finger, and then plug it back in.

3, and then check the graphics card, clean the gold finger of the graphics card, reinsert the motherboard, and then try to boot the computer, if the keyboard light is on after booting, press the num lock key, the corresponding light will also be on, which is basically a problem with the graphics card.

4. If the screen is still black, but the display can be normal if you change to another monitor, the display is damaged and needs to be repaired. If the same is true after replacing the monitor, try to replace the graphics card, if it is normal after replacing the graphics card, the graphics card is damaged and needs to be repaired or replaced.

5. If the system just can't boot, there is an error or a blue screen, it can be solved by reinstalling the original system.

There are three main types of fault analysis:

The power supply is aging and damaged, and it is often manifested as a fan that stops when it turns a little. Replacing the power supply can be solved.

The power switch is damaged. This is not common, 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.

Electrostatics. 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. For now, unplug the power cord, it is best to cut off the battery on the motherboard, press and hold the power button of the case a few times, and then quickly press the power button a few times to release the static electricity in the case.

Attach the motherboard battery and connect the power cord to try to see if it can light up.

It could be a problem with the following aspects:

1. The system software is damaged by a virus. Kill the virus and reinstall it and you can solve it.

Second, the plug-in of the motherboard is loose. Double-check and plug it in securely, especially the memory module and CPU fan.

3. The exhaust outlet of the fan is blocked, and the CPU works at high temperatures. Wash or replace the fan.

Are you dismantling the CPU cooling fans, the white glue is the heat dissipation silicone, and the bottom one is the core part is the cup, the system is lost? So you will install the system? Let's reinstall the system.

If the computer doesn't turn on, the fan will turn and stop or keep spinning, and it can be fixed with a few simple presses.

It is very common for the computer to fail to turn on, and it is inevitable that the computer will have some failures after a long time, which is unavoidable. And some users can hear the sound of the fan turning after the computer is turned on, but it can't be turned on, what should I do? If there is really no problem with the motherboard, you can try the following methods to introduce you to the solution that the computer fan can turn and cannot be turned on.

The first method: memory unplugging.

1. First open the computer case and find the memory module;

2. Open the live buckle before unplugging, pull out the memory module with both hands, wipe it clean, and then insert it again, and then see if it can be turned on normally.

The second method: coms the battery discharge.

1. Disassemble the chassis and find the COMS battery;

2. Press and hold the live buckle and remove the battery;

3. Connect the battery to the positive and negative poles in reverse for 30 seconds, turn it on, if it doesn't work, repeat it several times.

The second method: the motherboard is loose.

1. Use a screwdriver to loosen the screws on the motherboard a little bit, and twist the screwdriver one or two times to make it almost the same;

2. Then gently move the motherboard with your hands, and then try the second method;

3. If it doesn't work, then it is likely that there is a problem with the motherboard, and it should be sent to the factory for repair.

1.First: Check all cables, including power plugs, to make sure all devices are properly and securely connected together. Next.

2.Switch failure: When the power switch button cannot be reset due to aging, or the front panel of the chassis cannot be pressed due to deformation.

3.Memory failure: When a chip or resistor capacity of the memory fails, sometimes the host can be powered on after booting, but there is no normal start-up

Chip failure: Due to the use environment, the pins of the chip will be poorly contacted due to oxidation, which will lead to the host being powered on.

The computer doesn't turn on, but the fan keeps spinning. This problem can be solved using the method of elimination. First of all, you first unplug the power cord, then plug the memory and motherboard power cords back in, and then turn on the computer to try it.

If not, it is recommended to replace the motherboard power supply or memory, if the problem is still not solved after replacement. It's very likely that it's a motherboard issue. Then you need to change the motherboard and test it.

If you really don't turn it on, if the fan keeps turning, this should be a problem on the motherboard, and you need to reinstall the memory module to reinstall it, and reinstalling it will solve this kind of problem.

If you don't turn it on, and the fan keeps turning, then this CPU may be too high in consumption, and it will be used for a long time, and the wear and tear will be serious, and it needs to be replaced only.

If the computer can't be turned on, the screen is black, and only the power light is on, it is generally a problem with the motherboard, and you need to go to the repair shop to check it.

If the computer does not boot at all, it is possible that the motherboard is damaged. Also, What does a fan refer to a CPU fan? Or a power fan? This one is different.

If the control circuit on the motherboard is broken, please ask a professional maintenance personnel to repair it.

The computer doesn't turn on, and the fan keeps turning, or does it mean that there is a problem with the host of the computer? So, you still have to find someone who can repair your computer and help you fix it to see what the reason is.