Power socket problem. First of all, we need to eliminate this external factor. Sometimes we find that the plug is loose after a long day of work, and the computer is not powered on at all, so the first thing to do is to check whether all plugs are powered on. RAM. Many times when the computer cannot be turned on, there is a problem with the memory module, especially if the computer has not been used for a long time.
First turn off the power of the computer, open the case, pull out the motherboard battery, and clean the memory and graphics card from dust. Check whether any components are damaged and whether any parts are obviously hot and dissipate the heat.
Generally, the automatic shutdown may be caused by the high temperature caused by too much dust on the CPU fan. If so, clean the dust on the CPU fan and heat sink, and add new heat dissipation silicone grease.
Check the power supply first; disassemble the chassis, clean it, or disassemble the hardware and reinstall it.
The heat dissipation is not good. The system overheats due to the influence of weather temperature or insufficient number of CPU fan revolutions, which may cause the computer to automatically shut down. Memory reasons.
Power socket problem. First of all, we need to eliminate this external factor. Sometimes we find that the plug is loose after a long day of work, and the computer is not powered on at all, so the first thing to do is to check whether all plugs are powered on. RAM. If the computer cannot be turned on, there is often a problem with the memory module, especially if the computer has not been used for a long time.
The computer cannot be turned on, and there is no response when pressing the power switch. There are several possibilities for this situation: the power cord is loose, or the power strip is loose, or the strip is not powered on. The host power supply is broken. The computer's motherboard is broken. The switch button on the main unit is broken, or the button is stuck.
If the power supply of the host fails, such as the switching transistor breaks down, the fuse is blown, the rectifier diode is damaged, the filter capacitor leaks, the transformer is short-circuited, etc., the power cannot be exported and the voltage cannot be output. and current. If the host has no voltage and current input, it will naturally not turn on. Jianyi replaced the power supply.
Solution 1: (The power indicator light is not on) The power indicator light is not on. It may be that the transformer cannot provide power or the main components are abnormal and cannot be turned on. a. Please use the original transformer and power cord with correct specifications.
Possible reasons are as follows: motherboard failure, memory failure. If there are two memory sticks, it is recommended to unplug one memory and keep one memory for booting. If it does not work, replace the other memory separately and try to boot the test. If it's a motherboard problem, it's recommended to send it in for repair, as you can't fix it yourself.
1. There is a problem with the power socket. First of all, we need to eliminate this external factor. Sometimes we find that the plug is loose after a long day of work, and the computer is not powered on at all, so the first thing to do is to check whether all plugs are powered on. RAM. If the computer cannot be turned on, there is often a problem with the memory module, especially if the computer has not been used for a long time.
2. First start the computer in safe mode to see if it can start. Then run the anti-virus software. If there is a virus, it may be caused by a virus. Restart the computer after anti-virus. If it is still not normal, you need to reinstall the operating system.
3. Check whether the socket has power, unplug the power cord, press the power button 5 to 10 times repeatedly to discharge static electricity, plug in the power cord and try to see if it can turn on. To test the computer power supply, you only need to short-circuit the "green" and "black" wires, and short-circuit the green wire of the "PS" and "ON" terminals of the power supply to ground.
1. The computer automatically shuts down mainly due to the following reasons: Poor heat dissipation. The system overheats due to the influence of weather temperature or insufficient number of revolutions of the CPU fan, which may cause the computer to automatically shut down. It is recommended to check whether the system temperature is normal. Memory reasons.
2. After turning on the computer, the fan rotates and there is a self-check sound, but suddenly the power goes out. 70% of the possibility is that the power cord is broken. The computer starts normally, but the monitor suddenly does not display during the boot process. The host Running.
3. The computer cannot be turned on. Solution: Check whether the monitor and host cables and connectors are connected normally. If the system has started normally, you can check whether the button above the keyboard for turning off the power supply when the display is closed is normal.
4. Sometimes the computer will shut down when playing games, watching videos or having a large program freeze. How to avoid the occurrence of computer freezes will avoid the shutdown.
5. Reason 2: It may be caused by virus infection. Press and hold F8 after powering on the computer to enter the advanced options page, select "Last Known Good Configuration", and then press Enter.
6. The inability to turn on the computer may be related to the improper operations you performed before shutting down, such as: playing games, watching videos, operating large things, and using the computer for a long time. This may cause the card to cause disk damage. , improper use may cause hardware failure.
1. First check whether the voltage at your home is stable, and secondly check whether the computer's power supply can start normally, and check again Whether the temperature of your computer's CPU and graphics card is abnormal, these will cause a shutdown.
2. If the computer cannot be turned on by any means, it may be caused by a sudden shutdown, causing damage to the disk. One is to remove the battery from the motherboard and let it charge, the other is to leave it for a while and try to turn it on again. If it doesn’t work, just practice it. One is to leave it alone for half a day or a day and sometimes it will recover on its own, and the other is to refill the system.
3. If the power supply of the host fails, such as the switching transistor breaks down, the fuse blows out, the rectifier diode is damaged, the filter capacitor leaks, the transformer short circuits, etc., the power supply cannot be exported, and the power supply cannot be exported. Output voltage and current. The host will naturally not be able to turn on without voltage and current input. Jianyi replaced the power supply.
4. Hello 1. Press F8 after turning on the computer to see if it can enter safe mode with network connection. 2. If you can enter, see if you can restore the deleted files in the recovery area. If not, reinstall the system.
5. Then the power failure is basically eliminated. If the computer host or monitor is not powered on normally, please check whether the computer's power socket is in good contact, whether the power cord is broken, and whether the power strip is powered on. If the power outage is not caused by the above problems, it may be a problem with the host. At this time, you can ask professional maintenance personnel to repair it.
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