Among all kinds of computer faults, downtime is the most common fault, and it is also difficult to find the cause immediately. The following is what I have carefully prepared for you: related papers on computer downtime fault analysis. The content is for reference only, welcome to read!

The full text of computer downtime fault analysis is as follows:

The author summarizes the computer knowledge he has learned, and probes into and analyzes the causes of computer downtime.

Keywords: computer downtime analysis

Computers have brought us both convenience and trouble. How should we deal with computer failures? The application software is not completely compatible with the operating system, and there is a conflict between them or with the inherent characteristics of the hardware, resulting in downtime. Most of these downtime features that the keyboard is unresponsive and can only be cold started.

The phenomenon of downtime is generally that the system can't start, or the screen is frozen and unresponsive, and there is a "black screen" or "blue screen" and "frozen", the keyboard and mouse can't input, and the software execution is interrupted abnormally. However, the consequences of downtime are very serious. Fully understanding the reasons of downtime can effectively avoid the losses caused by downtime. The main reasons for downtime are as follows.

1. Hard disk reason

Bad tracks and bad sectors are mainly caused by aging or improper use of hard disk. This makes it easy for the machine to stop during execution. The maintenance of the hard disk must be handled by professionals, and it is not allowed to be disassembled by itself. In addition, for motherboards that do not support UDMA 66/ 100, we should pay attention to the setting of hard disk execution mode in CMOS.

2. Poor thermal stability

The so-called poor thermal stability means that the machine is still normal at the initial stage of execution, and after working for a period of time, with the increase of wafer temperature, it will stop. Usually, after the computer is turned off, it can work normally after cooling for a period of time and then turning it on. After a period of time, it will stop. This phenomenon will occur more frequently when the computer is overloaded. Because the monitor, power supply and CPU will generate a lot of heat in their work.

3. Loose hardware and poor contact

When the computer is moving, it often makes the internal devices of the machine loose, resulting in poor contact and computer downtime. Therefore, violent vibration should be avoided when moving the computer. Generally, when stopping, it can detect whether each patch panel is loose, and it can be pulled out and plugged in again.

4. Equipment mismatch

If the CPU main frequency is not set properly. This kind of fault mainly includes the wrong setting of CPU main frequency jumper switch, REMARK's CPU causing BIOS setting to be inconsistent with the actual situation, CPU overclocking and CPU inefficiency leading to shutdown. Overclocking improves the working frequency of CPU, but it may also make its performance unstable. The reason is that the speed of CPU accessing data in memory is faster than that of hard disk exchanging data, and overclocking makes this contradiction more prominent, which aggravates the situation that the required data cannot be found in memory or virtual memory. This will lead to "abnormal error", and the solution is of course simple, just let the CPU return to normal frequency.

5. The reading ability of the magnetic head is insufficient.

The main reason for this problem is the poor working environment. Such as: dirty air, frequent desktop vibration and other reasons will lead to the decline of magnetic head reading ability, but also lead to computer downtime. If it is a hard disk failure, there is no hope of repair. Once this happens, we can only replace the new hard disk. If the floppy drive head or laser drive head is contaminated with too much dust, we can use the head cleaner to clean it, or we can open the floppy drive and use a screwdriver to loosen or tighten the screws properly to adjust the height and angle of the head.

6. Memory bar failure

It is mainly caused by loose memory chips or quality problems of memory chips themselves. The contact fault of the memory stick should be eliminated according to the specific situation, such as re-plugging. If there is something wrong with the quality of the memory module, it needs to be replaced with a new memory module.

7. Hard disk resource conflict

This is an abnormal error caused by conflicting settings of sound card or video card. In addition, the interruption of other devices, DMA or port conflict may cause a few drivers to be abnormal or even shut down. The solution is to start in Safe Mode and make appropriate adjustments in Control Panel → System → Equipment Management. If the driver has an abnormal error, you can modify the registry file. Select "Execute", type "REGEDIT", enter the registry editor, find and delete all the "primary keys" and "key values" related to the driver prefix string through the "query" function under the menu, and restart.

8. Low quality hardware configuration

A few unscrupulous businessmen use inferior motherboards and memory when assembling compatible computers for customers, and some even sell fake motherboards and old CPU and memory. This will make the machine unstable during execution, and shutdown is inevitable.

9. Poor anti-interference ability

The line width of the power line and the ground line of the printed circuit chip on board is too small, the line spacing is too close or the level matching between chips is not good, which makes the transmission signal "oscillate" or "reflect", causing signal interference, making the chips have anti-interference ability and causing the system to stop. At this time, there will always be lingering interference clutter or lines on the monitor screen, and there will also be annoying noises in the speaker. This phenomenon is mostly caused by poor anti-interference of power supply, so a new power supply can be directly replaced.

10. Stop while executing the application.

This situation is the most common, and the reason may be the problem of the program itself, or the incompatibility between the application software and WIN98, resulting in a conflict. A prominent example is the execution of 16-bit application software in WIN98, which is well executed in DOS or Windows 3. X..WIN98 is 32-bit. Although it is easy to be compatible, it is often incompatible with 16-bit applications.

Sometimes all kinds of software are running normally and suddenly stop, but it is normal after restarting. This is a false shutdown phenomenon. Most of the reason is the memory resource conflict of WIN98. The application software is executed in the memory, and the memory space can be released after closing the application software. However, due to design reasons, some applications cannot completely release memory even after they are closed. When the next software needs to use this memory base address, a conflict will occur. This is most likely to happen when multiple windows are open at the same time.

1 1. Turn off the machine when it is turned on or off.

The downtime at startup is related to the BIOS settings of the hard disk. If there is nothing wrong with the BIOS settings, then the reason may be in the configuration. SYS and AUTOEXEC. BAT files are mostly caused by CDs. If configured. SYS and AUTOEXEC. BAT file makes the system hook up with a CD that works in DOS real mode, and BIOS needs to provide the underlying service program when running. On the other hand, WIN98 uses its own 32-bit protected mode driver. It is easy to cause conflicts between the two. In fact, configuration. SYS and AUTOEXEC. BAT file is of little use in WIN98. So if you don't work under DOS, you can delete it completely.

Most of the downtime when shutting down the system is related to some improper operation settings and some drivers. Before exiting, the system will close the programs and drivers in use, and these drivers will also perform a data write-back operation or a device search operation according to the situation at that time. Improper setting may lead to useless search mentioned above, resulting in downtime. The solution to this situation is to enter the "Control Panel" next time, double-click "System" and select the "Device Manager" tab, where you can usually find the wrong device with a yellow exclamation mark in front of it, and then refill the driver to solve the problem.

12. Stop after executing antivirus software.

When KV3000 checks a disk in WINDOWS98, it will stop as long as it shakes the mouse, and it is very frequent. There may be the following reasons: if it is pirated software, it may be caused by software encryption. Please uninstall it and use other antivirus software. If it is genuine, it may be because the virus is relatively new and the anti-virus software can't recognize it for the time being. It is recommended to download the latest version online. If the problem remains unresolved, it may be that a sector of the hard disk has physical damage or data storage errors. Please use tools and software to test the hard disk comprehensively.

Of course, the reasons for computer downtime are complicated, which may be the comprehensive influence of several factors or other reasons not mentioned above. But this paper aims to guide everyone to form a way of thinking about analyzing, finding and solving problems.

References:

[1] Li Guanming. Common faults and solutions of microcomputer shutdown.

[2] Yang Wei. Fault analysis of microcomputer shutdown.