Help write an experience about a computer repair No less than 500 words Very urgent Thank you

There are a lot of small silver-white bumps on the back of the motherboard, and if the screws fall on them, it may cause a short circuit in the motherboard circuit.

The boot fan is turning, which means that there is definitely no problem with the power supply. There is no response to the host switch and restart, indicating that the CPU (the brain of the computer) is not listening, there are two situations here, one is that the CPU is not powered on, and the other is that the CPU is broken. But there is also a situation where the motherboard circuit is broken, and even if the CPU is powered on, it will not work.

Definitely, but the chances are not great, and it's not so easy to get a small screw to touch more than two solder joints at the same time. After shutting down, plug in all the wires again, if it doesn't work, you can't DIY, find a professional.

Check the host power supply to see if there is a problem with the output voltage of the power supply, or if the screw falls out, it will cause a short circuit or burn out a chip.

Specific problems are analyzed in detail, and they are sent for repair. It can't be solved here.

Detect computer failures with the elimination method:

Unplug all the external cables on the computer first, leave the power cord and then unplug the graphics card (if there is a separate display), the memory module, and the other capture cards or anything else are also unplugged, only the cup remains. Then you turn it on. Because there is no memory on the motherboard, the motherboard will make a sound to report an error.

You can check the error sound of the motherboard, that is, how long and how short it is, to judge (I don't know how to find Du Niang, and the bones are OK).

Next, you shut down and plug in the memory. Turn it on again. If it's still a memory error, it's a memory problem, and if it's a graphics card or something, it's a memory CPU.

You then connect the hardware that reported the error, turn it on again, and plug in the hardware strips one by one. You can know which hardware is having the problem.

This is the basic method of computer hardware repair and is very useful.

It's important how you make sure your power supply is good.

Have you ever measured with a multimeter? The positive voltage of the power supply output can fluctuate within a reasonable range of -5% +5%, while the negative voltage can fluctuate within a reasonable range of -10% +10%.

Red line +5v:

櫈色线+:Yellow line+12v:

White line - 5v:

Blue line - 12v:

If the power test is normal, then we can use the "elimination method" to rule out suspicious parts one by one, one is the case power switch, which may be broken.

The way to test it is: unplug the PW switch cable on the front panel of the case and connect it to the motherboard, then connect the host power, use a screwdriver to short the PW two pins on the motherboard, if the computer can start normally, it means that the power switch of the case is broken.

If the computer still won't boot, there are only two parts left: one is the motherboard and the other is the CPU.

It is recommended to let a professional computer repairer take a look.

The case power supply is broken, or the motherboard is broken, and that's it.

Remove the power supply from the motherboard and short the black and green power supplies of the case to see if the power supply fan can rotate.

If the power supply is excluded, the possibility of the power switch on the panel is generally small, and it can only be a motherboard problem.

It feels like a problem with the motherboard, and it is recommended to take it to a nearby repair point for a full inspection.

Make sure your power supply is good, then OK, you press the power button to say that the computer is not responding! Oh, and that's the problem! Check the wiring that connects to the motherboard and the switch!

If it's still no problem! Sorry, your motherboard is going to the operating room! By the way, change the power cord, it can also be trick-or-treating!

If the power supply is OK and the accessories are not working, I think there is a problem with the cable connecting the power supply to the motherboard, and it is estimated that it is not plugged in. Please check with the landlord.

What about the panel buttons? Or the power cord.

That's the problem of the motherboard.,Generally there's no reflection It's often the problem of the motherboard.,You can simply try it.,Clean up the motherboard.,Reinsert the CPU and memory.,Start it and try it (it's recommended to put it on a cardboard box),If there's still a problem, it's the motherboard.。 If you are in a humid environment, it is recommended to use a hair dryer to blow the motherboard well (do not use hot air).

Looking at your introduction, it may be the most suitable for the book "The Master Teaches You to Play Computers" (you can go to the physical store first and try to read it, some people say that it should be long-winded, more suitable for Xiaobai).

Self-training is location-independent of time.

There are simple and practical tricks to learn computer maintenance: read a good book + repair yourself + a friend's computer.

Learning computer maintenance, instead of going to school, it is better to read books and study, the cost is low, the degree of time freedom is large, practical, and then you look at the surrounding computer maintenance level, it is not too late to go to school if you really feel insufficient. Learning computer board level maintenance has little to do with academic qualifications, and learning chip level generally requires circuit knowledge.

Learning will encounter interest, self-confidence, perseverance (persistence), and difficult problems, so it is best to start with the book, and then go to a training course with a lot of money after testing the above process. To cultivate interest, you can see the popular science "The Master Teaches You to Play the Computer: Hardware Introduction, Maintenance Tips" (If you feel that the examples are insufficient or the content is old, please refer to "The Master Teaches You to Repair the Computer:

The latest practical cases"), if you want to open a store, you can see "Play with Computer Repair and Store Opening Service" (and comprehensive), if you want to become an assembly computer expert, you can see "Multi-core Computer Assembly and Fault Handling Deep Technology", and the more complete update is "Complete Mastery of Computer Assembly and Repair Super Manual" (the thickest new computer maintenance book), to try whether you can insist on learning chip-level maintenance, you can see "Computer Hardware Chip-level Maintenance Case Practice", Dangdang, Jingdong ** has the evaluation of all books. You can also go to a physical bookstore to check out this kind of book, which is different from the computer books of ordinary authors.

<>As a computer repairer, I've experienced a lot of strange job requirements. Here are four of the more outrageous ones:

Story 1: One day, I received a letter from a company where the owner told me that he needed me to repair his computer, which his pet cat used to play games. This boss loves his cat very much, so he wants me to not only fix the computer, but also know the games that cats like to play, so that this cat can enjoy the game world.

As a maintenance person, this request strikes me as a bit outrageous.

Story 2: Another time, there was a guy who called me to help him fix his computer, but this request was very much in need of privacy, he asked me to come to his house, but when I arrived at his house, I found out that he was a hacker. He needs me to install some hacking software on his computer so that he can more easily hack into other people's systems and steal their information.

It made me very uncomfortable, and it was outrageous, and I decisively refused. Grinding.

Story 3: The story began in the second half of last year, when I received a query on my mobile phone, and a broken voice came from the other end: "Can you help me fix the washing machine?"

I looked at the caller ID on the ** again, and after confirming that it was the customer's number, I said: "Hello, I am a computer maintenance person, not a repair machine, you may have made a mistake." The broken voice repeatedly emphasized, "But my washing machine is controlled by a computer, so I went to check the computer repair ** and found you, a professional."

I listened to the patient explanation for a while, and then hung up**, which is even more outrageous.

Story 4: One day he received a customer's **, saying that his brain could not be turned on and needed urgent repair. I rushed to the client's home and found that the client's computer was an old-fashioned desktop with a Windows XP label on it.

I opened the case and found that it was covered in dust and cobwebs, and that the components on the motherboard had been short-circuited by the cockroach carcasses. I asked the customer how long it had been since the computer had been used, and the customer said it had been 10 years. I reluctantly told the client that the computer had been scrapped and suggested that he get a new one.

The customer did not listen to the persuasion and insisted that Xiao Li repair the computer, saying that he had grown old and had feelings for this machine. I was speechless at the time, so I had to patiently explain that the hardware of this computer was outdated, even if it was repaired, it would not be able to run the current software, and the data in it might have been corrupted. The customer still wouldn't give up, saying he was willing to pay anything, as long as he could get the computer back to normal.

I looked at this only cautious customer speechlessly, what an outrageous demand this is.

These bizarre experiences gave me a deeper understanding of the computer and IT industry, as I usually didn't know what kind of job requirements would come up to me, let alone what to do. These experiences also made me realize that repairing a computer is not only a technical job, but also requires an understanding of human nature and needs. No matter how ridiculous the request, I had to do my best to find a solution, and it was an experience I had in this industry to get to the bottom of the nature of technology.

Computer maintenance is a very important skill, which can ensure that our computers are always in good condition, so that our computer performance is more stable, more efficient and more efficient. When carrying out computer repair, we need to understand the hardware structure and software design of the computer, as well as the possible failure conditions. At the same time, we also need to have good patience and care to ensure that we can carry out in-depth repairs on the computer.

When carrying out computer repair, we first need to check the hardware equipment of the computer, including CPU, memory, hard disk, graphics card, motherboard, etc. We need to check that these devices are working properly and if there is a problem, they need to be replaced or repaired. In addition, it is also necessary to check that the heat dissipation of the computer is normal, as overheating can cause a sharp drop in the performance of the computer and may even cause hardware damage.

In addition to hardware maintenance, software maintenance is also an important part of computer maintenance. We need to be familiar with various operating systems and software to ensure that their versions, drivers, and security patches are up to date to avoid problems caused by version differences. In addition, we also need to scan and remove different types of viruses and malwares to ensure that the computer is not infected with viruses or malware.

Computer repair requires a certain amount of technology and experience, and it takes a long period of practice and learning to be proficient. As a computer repair technician, we need to constantly update our knowledge and master various repair skills and methods to ensure that our customers can get good repair services. In conclusion, computer repair is a very valuable skill that can help us keep our computers healthy and efficient, and play an important role in the digital age.