Is the sudden power failure of the computer related to the CPU fan?

In general, there are several possibilities for the computer to automatically power off:

If the temperature is too high, the motherboard will automatically power off protection.

2。The power supply is not working properly.

3。The temperature of other accessories is too high. (Motherboard north and south bridges, graphics cards, etc.)4. The voltage is unstable, and the voltage or current is too large instantaneously.

5。There are places where there is a short circuit.

6。There is a quality problem with the motherboard or power supply.

Judging from what you said, you can basically rule out the CPU heat dissipation problem, and it has nothing to do with the fan. If the CPU temperature is too high, it will automatically power off the protection, and it is impossible to turn on immediately. So that maintenance guy is either unprofessional or just wants to make some money.

I suggest you look for the answer in the other 5 points I said.

It's not a reboot or a power outage, it's estimated that it's a problem with the computer power supply, I've encountered it, the lack of power supply will also cause this problem, of course, the fan is also one of the reasons, if your computer can be restarted after a power failure, it is estimated that it is a fan problem if it works for a while.

There is a certain relationship ... Normally, if the CPU temperature is too high, it will automatically crash, and then restart vividly or automatically power off to protect the CPU from being burned out by the high temperature.

A CPU temperature that is too high will cause the machine to restart.

Probably a fan.

50 is a bit pricey.

It doesn't matter much, you can see if your power supply may be broken.

This problem is caused by the wrong power management mode.

1. Click "Start Settings Control Panel Power Options Advanced Power Management", and if your machine supports almost all advanced power management features, then check "Enable advanced power management support".

2. Click "Start" and run "Regedit", then find PowerDownAfterShutdown in hkey local machine software Microsoft WindowsNT CurrentVersion Winlogon, and set the value to 1.

3. Check whether ACPI is turned on in CMOS, if not, please open ACPI Advanced Management and reinstall the operating system, generally refers to entering CMOS, selecting Power Management, and finding ACPI function in this item must be set to Enable. If it is set to disable, it will fail to shut down automatically.

4. If there is no ACPI option in the CMOS, enter the corresponding system to check whether the advanced power management support is enabled in the power management, and if so, select it.

5. If the host does not have this option, the motherboard does not support ACPI advanced power management, and a prompt of "You can safely shut down the computer" will appear when the computer is shut down.

1. The radiator is not installed properly, the silicone grease is not applied properly, the CPU temperature is too high, and the protective shutdown is maintained.

2 The motherboard is not powered enough to bring this CPU

3 Motherboard or CPU is damaged.

As soon as the CPU is installed on the computer, there will be an automatic power failure, because the installation process is incorrect, resulting in a state caused by system failure, so at this time, it is best to use the correct installation method and install high-quality equipment, so that the computer can be used more smoothly and safely.

There is a problem with your description, do you not install the CPU and do not power off, how did you find out.

After the computer is shut down, the CPU fan and power supply fan are still running, and the solution to the problem should be considered from the following aspects:

1、.There is no advanced power management support for turning on your computer.

If this is the case, then you need to click "Start" "Settings" "Control Panel" "Power Options" "High Energy Power Management" and then check "Enable advanced power management support".

2. There is an error in the advanced power management settings in the BIOS.

It is also possible that you have mistakenly modified the options for advanced power management in the BIOS (Advanced Power Management in the BIOS), if you have a little knowledge of BIOS settings, then please enter the BIOS, if you don't know how to enter, then when the computer starts, press and hold the delete key of the computer, if the laptop or the brand machine, you can't escape F8, F9, F10, F11, F12. Let's try it sequentially. Once there, select the Advanced Power Management option.

Try modifying the options in the BIOS regarding power management. If the first item is enable, then you change it to disableBut if you are not familiar with the BIOS at all, then follow the method, enter the BIOS, and simply select the "Load Default Setup" option, that is, restore the BIOS to the default settings when it left the factory.

3. APM NT Legacy Node is not enabled.

In general, if the APM NT Legacy Node is not turned on, it may cause the power to shut down, but it cannot automatically cut off the power supply. Go to Device Manager and click "View Show Hidden Devices" in the menu bar to display all hidden devices in the system. In the Device List box, check whether the APM NT Legacy Node option is available.

If your computer supports this feature, you will have this option, double-click it, and in the pop-up properties dialog box, click the "Enable Device" button.

As long as the power is turned off, only the monitor is in the standby energy-saving state if the power is not turned off.

The motherboard battery is broken, or the power supply voltage is unstable, or the dust causes the motherboard to short-circuit. Clean it up.

Are you turning around after a while? If it doesn't rotate all the time, it's normal, because after the computer is shut down, if the internal temperature is too high, it will turn for a while to dissipate heat. Of course, it is also possible that the original element that detects the temperature is broken.

In the second case, I suspect that the temperature detection element is broken, because the normal computer will turn the fan first, in order to ensure that the CPU temperature is not too high when working, so the fan will be turned on first, and the display will be turned on after the thermal detection is normal.

There is a problem with the power supply to the motherboard. You go and get the motherboard overhauled. That's it.

I don't know, but I'm sure your computer is broken and needs to be repaired. The news comes from Central China Red Ke.

1 There is a problem with the motherboard BIOS, one of the BIOS is power management, you can check the relevant information, 2 There is a problem with the power supply!