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What are the knowledge points of this article "xp computer maintenance skills?" most people do not understand, so the editor summarizes the following content, detailed content, clear steps, and has a certain reference value. I hope you can get something after reading this article. Let's take a look at this "what are the skills of xp computer maintenance?"

First, check the failure phenomena.

A computer must first know the fault phenomenon before it can prescribe the right medicine to the case. There are some causes of damage, such as the damage caused by the disassembly and disassembly of the mainframe by the guest; what accessory the guest added to cause the machine not to be turned on; when the power is suddenly cut off, the phone will not be turned on again; there has been a minor problem before, but it can be turned on, but now it can't even turn on; wait, wait. If you know the reason, sometimes you will get twice the result with half the effort when you fix it.

Second, fault classification

1. No power-on fault

After pressing the boot button, the mainframe does not respond, the power indicator does not light up, and the fan of the power supply does not turn.

2. Short circuit fault

After pressing the boot button, the power indicator light will turn off, and the power supply fan will stop as soon as it turns on or in a few seconds.

3. Black screen failure

After pressing the power button, the power supply fan and CPU fan keep turning, but there is no display on the monitor and no alarm sound on the speaker.

4. Horn alarm

After pressing the boot button, the power supply fan and CPU fan keep turning, the monitor does not display, and the horn sounds an alarm.

5. Cannot join CMOS

There is a boot screen, but after entering the boot screen, it will crash and cannot enter the CMOS.

6. Unable to boot the system

Can enter the CMOS settings, but not the WINDOWS system.

7. Crash after entering the system

It crashes when entering the system or after entering the system.

Third, determine the location of the fault

Although there are some failures, you can know the causes at a glance, but most of the failures will be caused by many reasons. Therefore, we must carry out step-by-step troubleshooting according to the specific fault phenomena, starting from the most likely until the fault location is found.

IV. Judge whether the parts are good or bad

1. Judgment of good or bad power supply

Unplug the power supply ATX from the motherboard and use tweezers to short connect the green and black cables. The power supply fan is turned to indicate that the power supply is good, and the problem lies with other devices.

If not, unplug all the power plugs such as the hard drive and CD-ROM drive, and connect the green and black cables with tweezers. If it doesn't turn, change the power supply directly. When the power supply fan turns, it means that the power supply is good. The problem must lie in the hard drives, optical drives and other devices unplugged in the back. You need to try one after another, connect which one does not turn, and directly replace it.

2. Judge whether memory is good or bad

The replacement method is adopted. Unplug the memory on the motherboard, replace it with your own good memory, and turn it on. If the fault disappears, the memory is broken; like the failure phenomenon, the memory is good, and the problem lies with other devices.

There are three kinds of memory, first generation, second generation and third generation, each of which has a different memory slot. Learn to look at the memory slot to identify which kind of memory.

3. Judge whether the hard disk is good or bad

Black screen or can enter the boot interface but not CMOS, first unplug the power cable and data cable of the hard disk, if the fault phenomenon disappears, you can judge that the hard disk is broken, directly change the hard disk and install the system.

If you can't boot the system, advanced CMOS to see if there is a hard disk inside. If there is no hard disk in the CMOS, change the data cable, change a power interface and reseat it, such as charge the money.

If the CMOS does not recognize the disk after changing the line, and the hard disk is broken, directly replace the hard disk and install the system.

If CMOS can recognize the disk but cannot boot the system, it is necessary to reinstall the system. If you can reinstall it, you will be charged after you install it. Can not reinstall, directly change the hard drive and install the system.

4. Judge whether the video card is good or bad

The replacement method is the same as the memory stick. Unplug the video card, replace it with your own video card, and turn it on. If the fault disappears, the graphics card is broken; like the failure phenomenon, it means that the graphics card is good, and the problem lies in other devices.

5.CPU judgment of good or bad

CPU is rarely bad, ask the guest if he has touched the CPU CPU fan, if not, we will regard CPU as good. If we have moved, we use the replacement method to replace our good CPU. If the fault remains the same, the CPU is not broken, and the problem lies elsewhere.

6. Judge the quality of the motherboard

To judge whether the motherboard is good or bad should be put at the end, and all the other parts are fine, so you don't need to check to know that the motherboard is broken. Ask the guest whether to repair or replace it. Generally, the bad one will be 200 to 300, and the guest will not be willing to do so. If we want to fix it, we don't need to fix it ourselves. we just need to get a place to fix the motherboard.

When judging the motherboard, you can remove all the accessories, leave the motherboard and CPU, then insert the diagnosis card, and judge the fault location according to the code on the diagnosis card.

The above is about the content of this article "what are the skills of xp computer maintenance?" I believe we all have a certain understanding. I hope the content shared by the editor will be helpful to you. If you want to know more about the relevant knowledge, please pay attention to the industry information channel.

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