Sometimes the computer won t start, and the fan sometimes turns and sometimes doesn t

1) Boot this has something to do with your improper operation before shutting down, right? For example: playing games, watching **, operating big things, and using the computer for a long time caused by the card, right? Or if something unsuitable is installed, the failure will not happen for no reason, right?

Immediately after booting, press f8 to the advanced option to appear in the let go, select "the latest correct configuration" enter to repair, and press f8 to enter the safe mode to restore the system or reinstall the system (if the reinstallation is also the case, it is recommended to overhaul it, if you can enter the safe mode, it means that you have installed something inappropriate, and uninstall all the inappropriate things before the accident, or restore the system or reinstall).

First soft and then hard, such problems are caused by software conflicts, inappropriate drivers, and system problems, you can restore the system in safe mode, or not reinstall the operating system, do not install software, patches, drivers, etc., and see if there is still a problem with booting? If you don't install drivers, patches, and software step by step, and find something that isn't suitable, don't install it.

If it is caused by hardware, take out the motherboard battery and put it on the charge, plug and unplug the memory, clean the graphics card, and check whether there is a problem with the hard disk and motherboard parts.

2) If this is always the case, first soft and then hard, reinstall the operating system, do not install software, patches, drivers, etc., and see if there is still a problem with booting? If you don't install drivers, patches, and software step by step, don't install anything that doesn't fit (if you have any questions, please ask me).

Please note: If you restore the system or reinstall it, when installing drivers, patches, software and other things, be sure not to install the things that affect your accident this time, otherwise it will be restored or reinstalled in vain.

3) Whether there is a problem with hardware, such as hard disk, memory, graphics card, motherboard parts, etc., if it is caused by hardware problems, it is recommended to overhaul it.

I have also had such a situation in my machine, at first I thought it was a memory not plugged in or a capacitance problem, and then the maintenance staff took a look and found that it was a simple static electricity problem, just unplug the power cord on the main chassis and put it aside, and then press the power button a few more times, wait a few minutes and then connect the cable, and try it when plugging it in. If it still doesn't work, just turn on the host and wipe the ash inside, and there should be no big problem. Oh.

See what's wrong with the motherboard, see if the power supply voltage is normal, see if there are any bubbling capacitors on the motherboard, and replace them if they have. Also check if the battery on the motherboard is charged, try another one.

If your computer is running after you turn it on, and the monitor just doesn't reflect, you can try unplugging the power supply and plugging in the memory module again, maybe the memory is not in good contact. If your computer does not have any reflection after turning on it, it proves that there is no power, so it is a problem with the power supply of the computer, you can try to unplug the motherboard power cord in the case, click the power button to discharge, plug in the motherboard power cord again, and try to boot it up, if it doesn't work, there may be a problem with the power supply.

The machine has been useless for a long time, and the fan ash must have accumulated a lot, and there is a lack of oil, so it is not easy to start! Boiling point: Kung Fu, clean the fan well, add some oil should solve the problem!

Unplug the power supply and prepare cleaning tools; Open the case with a screwdriver and clean the fan; It's relatively simple to pull the fan up for cleaning, and it's good to clean it. Reboot, (generally useless, but, try to do the simple operation);

<>2. Pull out the memory module, check it with an eraser, (you really can't find it, you can try to rub it vigorously with your hands), and then install it back into the computer, pay attention to it when you install it, and pay attention to it when you install it.

3. Replace the computer heat dissipation silicone, prepare the silicone, buy a one-time enough to use it, twist the screws around the computer fan, and then you will see the CPU and heat dissipation silicone sticking, wipe off with paper and replace with a new one. (I've been successful with this method.) But after a week, I don't know why it failed, and I tried again, and the expiration time was shorter); Look at the picture, there are many small holes, and the CPU is placed on them;

CPU fan.

Angles and bearing systems. 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 generation of the CPU, and the speed selection of fans of different specifications should be differentiated, the basic principle is: under the premise of generating the same air volume, the larger the fan speed, the lower the speed, and the noise will also be smaller, generally between 3500 rpm and 5200 rpm is more conventional.

The higher the power, the stronger the fan and the better the heat dissipation. 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.

If the power is too large, not only will the cooling effect not be greatly enhanced, but it may increase the workload of the computer, and ultimately shorten the life of the CPU and fans. Therefore, when choosing the power of the CPU, you should measure the "heat". And the opening in front of the fan should be kept clean at all times to avoid blockage.

A better radiator will not have burrs on the edges, no deformation of the heat dissipation fins, smooth bottom without cracks, neat appearance, generous shape, warranty, 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.