What should I do if the computer motherboard burns?

Question 1: What happens when the computer motherboard is broken? If the motherboard is broken, the computer won't work.

If the memory module is not plugged in properly, it can be turned on, but there will be a long and short alarm sound.

If the CPU temperature is too high, there will be two long and one short alarms, which can be judged by the landlord.

In this case, it is necessary to pay attention to the heat dissipation of the machine, for example, the chassis should not be close to the wall, and it should not be turned on continuously for too long.

Another is to re-select a fan.

Question 2: The computer motherboard is broken. Can it be repaired? Your motherboard can be eliminated! Just fix the fan according to my drawing. It is best to have a silicone grease coating, and the effect will be better!

It is recommended not to repair the motherboard and buy a new motherboard!

Question 3: What are the reasons for the computer motherboard burning out? It is a headache to summarize the causes of motherboard burning. But the most important thing is to take good care of your machine. Then the first thing to know is that those conditions will cause the motherboard to burn out. The following is only a personal summary, without reference or suggestions: (1) The jumper is inserted incorrectly. Of the five jumpers to be plugged in, two (hard disk lights) will burn out the motherboard or hardware if this jumper is plugged in backwards. (2) Inadvertently, some metals were not noticed when the machine was installed, and the machine was hung on the motherboard when it was lit. It will burn out the motherboard. Or the machine is running. If you are not careful, you will get into the water (of course, this possibility is very small). (3) The filter capacitor is burnt out. Although it is only a capacitor, the capacitor is mainly used on the motherboard to ensure the stability of voltage and current (filtering). Let's not ignore it. Because we know its function, we can imagine the influence of capacitance on the motherboard (the influence of voltage and current on the motherboard). (5) The quality of power supply should also be considered. If the voltage and current are unstable, the motherboard will also be greatly affected, which will directly lead to the circuit burning out. (6) Too much dust or short circuit caused by humidity may cause the circuit and motherboard to burn out. (self (7) overclocking, if overclocking, it will also increase the load of the motherboard. Overclocking beyond the limit will also burn out. However, with the rapid development of hardware equipment, overclocking has become a thing of the past. (8) There is something wrong with the quality of the motherboard itself. In other words, there is nothing to do.

Question 4: What should I do if the laptop motherboard burns? Motherboards are very cheap. In fact, the parts in the computer are only one-third or even less than those of a brand machine. Search for Taobao and the like and you will probably know the price.

But I don't think the motherboard is burned. Can I turn on the computer after burning the motherboard? Are you kidding?

1 There is a heat dissipation problem. If the temperature is too high, it will automatically turn off.

2 power supply problem, unstable power supply or poor contact

3 virus, originally I don't know what virus it is, will automatically cut off the power, just to scare the system.

Question 5: What should I do if the motherboard of the desktop computer is broken? If you change the motherboard, you can buy a 2-handed CPU slot model on Taobao. If you have more money, buy a new computer. The computer in 2008 is quite old, hehe.

Question 6: The computer motherboard is burnt out. What should I do if I find someone to repair computer hardware? If it can't be repaired, I'll replace it with a new one.

Question 7: What is the problem that computer motherboards often burn out? If you want to find out the problem, you should know what caused the motherboard to burn out now. I'm a computer repairman, and I'll give you some advice.

The power problem of 1 will cause the components to burn out.

2 voltage instability will also cause all components to burn out.

3 the quality of the product itself

4 man-made damage

5. There is nothing wrong with the computer case (this problem rarely appears, but it does exist! ! I have met)

As you said, the problem is probably 1 2 3. How can you find it? First, let's see if your voltage is stable. I don't need to teach you. Second, try another power supply. Finally, check the reputation of your motherboard online! ! ! ! !

Question 8: The computer motherboard is burnt out. What can I do if I burn it all? Is the water coming out?

Change a piece

Question 9: What are the common fault diagnosis methods for computer motherboards? (Motherboard failure can lead to on-off failure): Computer main board structure is complex, with high failure rate and scattered failure distribution. According to the source of failure, motherboard failure can be divided into power failure, bus failure, component failure and so on. The main causes of motherboard failure include the following. 1, component reason: the quality of chips and other components on the motherboard is poor, which leads to the aging and damage of the motherboard, which leads to the failure of the motherboard. 2. Man-made reasons: When using the computer, hot-plug hardware at will or touch various connectors with metal objects randomly, resulting in motherboard failure. 3. Dust and static electricity: The motherboard fails due to poor contact, short circuit or chip burning caused by dust or static electricity. Causes of poor contact: Various chips, sockets and interfaces in the motherboard have failed due to poor contact such as corrosion, oxidation, weakened elasticity, pin desoldering and fracture. According to the characteristics and fault causes of the motherboard, when the motherboard fails, the diagnosis method of the motherboard fault is as follows. Step 1: First, carefully check each slot, fan, chip, etc. for signs of damage. Motherboard: whether there is burning, burning, foaming, broken board, socket corrosion, capacitor Explosicum: whether the BIOS battery is charged. If there is obvious damage, it is necessary to carry out targeted maintenance. Step 2: If the motherboard shows no obvious signs of damage, then clean the dust on the motherboard with a soft brush and check whether the motherboard is normal after cleaning. If it is normal, it is a fault caused by dust. Step 3: If the dust is still abnormal after cleaning, then use a multimeter to measure whether the power supply voltages of the motherboard are normal (+5V,+12V, +3.3V, etc.). ). If the voltage is abnormal, check the power supply and its motherboard circuit for faults. Step 4: If the motherboard voltage is normal, power on the motherboard and check whether there is a hot chip on the motherboard. If there is a hot chip, first check whether there are signals at the input and output terminals of the hot chip (see waveform). If there is an input signal but no output signal, check whether the heating chip has a clock signal. If yes, the chip is damaged and can be replaced; If there is no clock signal, check the previous stage of the chip along the line connected to the chip until the faulty component is found. Step 5: After finding the faulty component, do not remove it from the motherboard for the time being. You can choose the same model of chip connection, and then turn it on to see if it is normal. If the motherboard fault disappears, the chip is damaged and needs to be replaced. Step 6: If the motherboard is still out of order, find a short route by tangent and line borrowing. If it is found that some signal lines are short-circuited with the ground wire or +5V voltage wire, it can be cut off and re-measured to determine whether it is the chip problem or the wiring problem of the motherboard circuit board.

Question 10: What causes the computer motherboard to be broken? Computer main board structure is more complex, with higher failure rate and more dispersed failure distribution. According to the source of failure, motherboard failure can be divided into power failure, bus failure, component failure and so on. The main causes of motherboard failure include the following.

1. Components Cause: The poor quality of chips and other components on the motherboard leads to the aging and damage of the motherboard, which leads to the failure of the motherboard.

2. Man-made reasons: When using the computer, hot-plug the hardware at will or touch various connectors with metal objects, resulting in the failure of the motherboard.

3. Dust and static electricity: The motherboard fails due to poor contact, short circuit or chip burning caused by dust or static electricity.

Causes of poor contact: various chips, sockets and interfaces in the motherboard are in poor contact due to corrosion, oxidation, weakened elasticity, pin desoldering and broken, which leads to motherboard failure.

According to the characteristics and fault causes of the motherboard, when the motherboard finds a fault, the diagnosis method of the motherboard fault is as follows.

Step 1: First, carefully check all slots, fans, chips, etc. for (contrary to) signs of damage. Motherboard: whether there is burning, scalding, blistering, broken board, socket corrosion, capacitor Explosicum: whether the BIOS battery is fully charged. Just like if there is obvious damage, it is necessary to carry out targeted maintenance.

Step 2: Just like if there are no obvious damage marks on the motherboard, clean the dust on the motherboard with a soft brush, and analyze whether the motherboard is normal (as opposed to abnormal) after cleaning. Just like if it is normal (as opposed to abnormal), it is a fault caused by dust. Over.

Step 3: Just like after cleaning the dust, it is abnormal (opposite to abnormal), and then use a multimeter to measure whether the power supply voltage of the motherboard is normal (opposite to abnormal) (+5V,+12V, +3.3V, etc. ). Just like if there is abnormal (opposite to abnormal) voltage, analyze whether the power supply and its motherboard electrical circuit are faulty. Over.

Step 4: Just like if the motherboard voltage is normal (as opposed to abnormal), power on the motherboard and analyze it to see if there are any hot chips on the motherboard. Just like if there is a hot chip, first analyze whether there is a signal at the input and output terminals of the hot chip (see the waveform). Just like when there is an input signal but no output signal, analyze whether the heating chip has a clock signal. Just like if there is, the chip is damaged and can be replaced; Just like if there is no clock signal, the previous stage of the chip is analyzed along the line where the chip is connected until the faulty component is found.

Step 5: After finding the faulty component, do not remove it from the motherboard for the time being. You can choose the same type of chip connection, and then turn it on to see if it is normal (as opposed to abnormal). Just like if the motherboard fault disappears and the chip is damaged, the replacement of this chip is over.

Step 6: Just like if the motherboard still fails, find the shortest route by tangent and borrowing lines. Just like if a grounding signal wire is found to be short-circuited with the ground wire or +5V voltage wire, it can be cut off and measured again to determine that it is a chip problem, so that the wiring problem of the motherboard circuit board is over.

Step 7: If the above method fails, find a motherboard of the same model by comparison, measure the waveform and parameters of the corresponding chip pins, and confirm whether the chip is damaged.