The computers in the office are starting one after another, because the computers in the office have been used for several years, and almost all the computer screens in the office are gradually changing from the process of "black screen - blurred handwriting - clear". At this time, there was a computer that was very strange. When the computer turned on, it was turned off for 30 seconds. When it turned on again, it was still the same!
It was raining on plum blossoms, and I returned to the office after the winter vacation. The computer has not been on for more than a month.
The computers in the office are starting one after another, because the computers in the office have been used for several years, and almost all the computer screens in the office are gradually changing from the process of "black screen - blurred handwriting - clear".
At this time, there was a computer that was very strange. When the computer turned on, it was turned off for 30 seconds. When it turned on again, it was still the same!
I have encountered such a situation before, and there are many reasons: poor contact with the power socket, damaged host power, damaged CPU fan or motherboard, etc.
So, I started to repair it from the following aspects:
First, check whether the power socket is normal. Replace an available power socket and the fault remains!
Then, check the computer's power supply. The fan on the power supply behind the chassis rotates when it is turned on, which indicates that the power supply is not faulty!
Again, check the CPU's fan. It can also rotate when it is turned on.
Finally, check the motherboard, no damaged or deformed capacitors.
Very strange, is it caused by moisture?
I blew it with an electric air drum for nearly half an hour, but the fault was still there.
I thought about it repeatedly, considering various possible faults, but I couldn't explain this phenomenon: the computer was normal when I first turned on, but it suddenly ran out of power after a while.
I have checked many newspapers and magazines about computer failures, and consulted many professionals who agreed that there was a problem with a certain capacitor or chip of the computer motherboard, but I have not found any specific faults for the time being. Is it really a motherboard failure? But I always think that the main reason is not this, and I cannot rule it out and I cannot find out what the reason is.
After a few days, I continued to check and carefully observed and found that will the chassis power cord connected to the motherboard's Power pin cause such a failure?
I conducted a test with a skeptical attitude: first check whether the RESET key can be used normally; while ensuring that the Reset key is normal, unplug the power cord connected to the Reset and connect to the Power cable interface.
Turn on, the computer can be turned on normally!
It turns out that all this is because the chassis power cord is damaged!
So, I used the reset key instead of the power key to power on, and the computer could be used normally. Although there is no reset function for the time being, it can at least ensure that the computer is functioning normally.
Later, I bought a power cord connected to the motherboard power pin. The computer was normal and there was no such fault.
Summary: In the past, I always thought that if I couldn't turn on the machine, it was because the power supply or other important components were faulty, and I never considered that it might be a small power cord. For our generally inexperienced office workers, it is sometimes difficult to consider. Therefore, if your computer has the above faults, don’t try it.
It was raining on plum blossoms, and I returned to the office after the winter vacation. The computer has not been on for more than a month.
The computers in the office are starting one after another, because the computers in the office have been used for several years, and almost all the computer screens in the office are gradually changing from the process of "black screen - blurred handwriting - clear".
At this time, there was a computer that was very strange. When the computer turned on, it was turned off for 30 seconds. When it turned on again, it was still the same!
I have encountered such a situation before, and there are many reasons: poor contact with the power socket, damaged host power, damaged CPU fan or motherboard, etc.
So, I started to repair it from the following aspects:
First, check whether the power socket is normal. Replace an available power socket and the fault remains!
Then, check the computer's power supply. The fan on the power supply behind the chassis rotates when it is turned on, which indicates that the power supply is not faulty!
Again, check the CPU's fan. It can also rotate when it is turned on.
Finally, check the motherboard, no damaged or deformed capacitors.
Very strange, is it caused by moisture?
I blew it with an electric air drum for nearly half an hour, but the fault was still there.
I thought about it repeatedly, considering various possible faults, but I couldn't explain this phenomenon: the computer was normal when I first turned on, but it suddenly ran out of power after a while.
I have checked many newspapers and magazines about computer failures, and consulted many professionals who agreed that there was a problem with a certain capacitor or chip of the computer motherboard, but I have not found any specific faults for the time being. Is it really a motherboard failure? But I always think that the main reason is not this, and I cannot rule it out and I cannot find out what the reason is.
After a few days, I continued to check and carefully observed and found that will the chassis power cord connected to the motherboard's Power pin cause such a failure?
I conducted a test with a skeptical attitude: first check whether the RESET key can be used normally; while ensuring that the Reset key is normal, unplug the power cord connected to the Reset and connect to the Power cable interface.
Turn on, the computer can be turned on normally!
It turns out that all this is because the chassis power cord is damaged!
So, I used the reset key instead of the power key to power on, and the computer could be used normally. Although there is no reset function for the time being, it can at least ensure that the computer is functioning normally.
Later, I bought a power cord connected to the motherboard power pin. The computer was normal and there was no such fault.
Summary: In the past, I always thought that if I couldn't turn on the machine, it was because the power supply or other important components were faulty, and I never considered that it might be a small power cord. For our generally inexperienced office workers, it is sometimes difficult to consider. Therefore, if your computer has the above faults, don’t try it.