Now computers are basically necessary household appliances, and computer crashes when going online at home will more or less bring some troubles and doubts. It is tens or even hundreds to be sent to the shop to repair casually. In fact, in many ways, you can do it a little or use your brain to solve it. Not only save money, but also have a great sense of accomplishment. There are many reasons for the crash, and it is very elusive. In the era of DOS system, this kind of problem may be better solved. In the era of the Windows * operating system we are now in, the cause of the crash becomes more complicated. Because the components of the Windows * operating system are relatively complex, once a crash occurs, it is almost impossible for ordinary users to accurately find out the cause of the software crash. Moreover, problems such as crashes caused by hardware failures are still one of the main causes of computer crashes.
Causes and maintenance methods of computer crash
When encountering this type of failure, the general steps to solve the problem are first soft and then hard. We will gradually explore and resolve these computer crashes. The computer does not turn on or cannot pass the self-test. First, if the indicator light on the panel of the computer case does not turn on, and the fan rotation sound is not heard, the computer does not respond at all. If you see that the indicator light on the panel of the chassis is already lit, and you also hear the rotating sound of the fan, this indicates that the computer is powered on. At this time, if the indicator of the monitor is not on, check whether the power cord of the monitor has been connected, and (re) turn on the power switch of the monitor; if the indicator of the monitor is already on, then it depends on There is already text displayed.
Software cause of computer crash
1. Improper software upgrade: During the software upgrade, some of the shared components will be upgraded, but other programs may not support the upgraded components and cause various problems. Abuse of beta version software: Beta version software usually has some bugs or is not stable enough in some aspects. After use, there will be a program error prompt for data loss, a crash, or the system will not start.
2. Illegal software uninstallation: If the software installation directory is not deleted directly by software uninstallation, the corresponding link files in the registry and Windows directory cannot be cleared, causing the system to become unstable and cause a crash. It is recommended to use the uninstall program provided by the software when removing unnecessary application software. It is best to run "Add / Remove Programs" in the "Control Panel" to completely start the software from the system too many programs: due to running too many programs , Straining system resources, and the data required by individual programs cannot be found in memory or virtual memory, and abnormal errors may occur. Use pirated software: The pirated software may hide a virus. Once executed, it will automatically modify the system and cause the system to crash during operation. Illegal operation: illegally opening or releasing related programs with illegal formats or parameters will also cause the computer to freeze.
3. Abnormally shut down the computer: Do not use the power button of the chassis to forcibly shut down. This may cause damage or loss of system files and cause automatic startup or crashes during operation. For systems such as Windows 98/2000 / NT, this is very important. In severe cases, it will cause the system to crash.
4. Memory conflict: Sometimes it is normal to run all kinds of software, but suddenly it crashes inexplicably, and it is normal to run these applications after restarting. This is a phenomenon of fake crash. Most of the reasons are the conflict of memory resources of Win 98.
5. Virus infection: Viruses can make the computer work efficiency drop sharply, causing frequent crashes. Such failures can be checked and run antivirus software by running antivirus software, and the antivirus software should be upgraded in time. Incorrect deletion of system files: Since Windows 9X needs to have Command.com, Io.sys, Msdos.sys and other files, if these files are damaged or deleted by mistake, even if the various hardware settings in CMOS are correct, it will not help. In this case, after restarting the system with the system disk, retransmit the system files. Improper CMOS settings: Improper hard disk parameter settings, mode settings, and memory parameter settings cause the computer to fail to start.
6. The initialization file is damaged: Since Windows 9X needs to read the System.ini, Win.ini and registry files, if there are Config.sys and Autoexec.bat files, these two files will also be read. As long as there are error messages in these files, there may be a crash, especially the four files System.ini, Win.ini, User.dat, System.dat are particularly important.
7. The dynamic link library file (DLL) is missing: There is another type of file in the Windows operating system that is also very important. This is the dynamic link library file with the extension DLL. These files are shared files in nature. If you delete a shared file when you delete an application, especially if the more important core link files are deleted, the system will crash or even crash. Too little hard disk space or too much fragmentation: Because some applications require a lot of memory, you need to use disk space to provide virtual memory. If the remaining hard disk space is too small to meet the needs of the software, it is easy to cause a crash. The way to solve this kind of problem is to reasonably divide the disk space, use the "disk defragmenter" to regularly organize the hard disk, and remove junk files from the hard disk. Nothing is displayed on the screen. First check whether the signal cable of the monitor is firmly connected to the graphics card interface. If you hear the horn beeping, beeping, beeping for a long time. This shows that the graphics card is not plugged in properly, or the connection is bad. At this time, you should turn off the power, reinsert the graphics card, and fix it. If it still does not light, and continue to emit a long or short alarm sound, it may indicate that there is a problem with the graphics card itself. It is recommended to change the graphics card to another machine to try it out. If the sound of the speaker is a long beep, it means that there is a problem with the memory module. It is best to reinsert the memory module and try it on a different memory slot. If not, you can only replace the memory module. If you don't hear any alarm sound (make sure the PC speaker is connected correctly). That is troublesome, you need to use the "exclusion method" to check each accessory one by one, and finally confirm the "culprit".
8. The self-test message appears, and the memory crashes after the self-test is completed. This may be caused by incorrect parameter settings of the memory in CMOS. For example, the verification is set for the memory that has not been verified, or the parameter values ​​of "DRAM Read Burst TIming" and "DRAM Write Burst TIming" of the memory are set too small in CMOS, so that the actual performance of the memory module cannot be reached The set requirements caused the computer to freeze. In addition, when adding a new memory module to the computer, you should try to use the same brand and model of memory module to avoid incompatibility. If "HARD DISK FAILURE" is displayed, you need to check whether the power cable and data cable of the hard disk are connected intact and correct. If not, take the hard disk to another machine to test it. If it still cannot be recognized, it means the hard disk There is physical damage itself, and the hard drive needs to be repaired or replaced.
9. Can't enter the system after power on. After turning on the power and turning on the host switch, the power indicator is on and the hard disk indicator flashes at the same time, it means that the host has started normally. The problem should be the display system. First of all, you should check whether the signal cable connected between the monitor and the graphics card is loose. If you hear the alarm sound or cannot enter the system after the self-test, please refer to the relevant solutions in the first part to eliminate the problem. Freeze during Windows startup
1. The screen displays: "Invalid parTITIon table" or "Not Found any [active partition] in HDD", and "DISK BOOT FAILURE, INSERT SYSTEN DISK AND PRESS ENT" prompt. This means that the hard disk has not been partitioned, the partition table is destroyed or the partition has not been activated. At this time, you should first check and kill the virus before doing the partition, activate the partition and format the hard disk.
2. The screen appears: "Miss operation system" prompt. It means that the hard disk is not formatted, or is not installed * as the system.
3. The prompt "DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER" appears, indicating that the system failed to start. The first thing we need to do is to restart the computer and enter the CMOS settings to see if the hard disk exists. If the hard disk is not detected, there is a high possibility that the hard disk or the connection of the hard disk has a problem, and further troubleshooting and detection are required.
4. The screen displays: "Invalid system disk, Replace the disk, and then press any key", which means that the system files on the hard disk are lost, such as IO.SYS, MSDOS.SYS files. The method of recovery is to start the computer with the Windows startup disk, and then use the SYS command to re-deliver a system to the hard disk. In addition, it may be caused by a floppy disk in the floppy drive that is not the boot disk.
5. When the Windows startup screen appears, there is no response. The reasons for this situation are more complicated and difficult to judge. The problem may come from both software and hardware. In terms of software, first check whether the files in the boot area are infected with viruses. It is best to use different anti-virus software to check. Remember to update the virus database file of anti-virus software before killing. In addition, it may be caused by damaged drivers, incompatibilities, or registry confusion. In this case, you must enter "safe mode" to reinstall the driver or restore the registry file. When the problem is serious (cannot enter "safe mode"), you can only reinstall * as the system. Hardware It may be due to the poor heat dissipation of the machine, resulting in a high operating temperature of the CPU or graphics chip and a crash. Of course, because the graphics card chip operating temperature is too high, the phenomenon of boot crash is rare, and our main concern here is the CPU. Especially now that the CPU is running faster and faster, the main frequency is getting higher and higher, and the heat generation is also increasing. Therefore, it is recommended that you not use it overclocking, and you must match the CPU with a good cooling effect fan.
6. A prompt similar to the following appears on the screen: Reports that a file cannot be found, and then freezes or restarts. This happens mainly because some boot files or drivers (files with the extension "VXD" or "DLL") in the system are accidentally deleted, or the files are lost or damaged. In this case, we can find the same system and copy the intact file to COPY. If not, we have to reinstall * as the system. Windows crashes during Windows * system crashes suddenly, there are many reasons for this situation.
Computer crash hardware cause
1. "Software and hardware are not compatible": For example, 3D production and some special software may not be installed or started properly in some computers, and there may be software and hardware compatibility issues. "Hard disk failure": Mainly due to hard disk aging or bad sectors or sectors caused by improper use. In this way, when the machine is moving, it is easy to crash. Special tools and software can be used for troubleshooting, if the damage is serious, you can only replace the hard disk. In addition, for motherboards that do not support UDMA66 / 100, you should pay attention to the setting of the hard disk operation mode in CMOS. "CPU overclocking": Overclocking increases the operating frequency of the CPU, and at the same time, it may also make its performance unstable. The solution is of course relatively simple, which is to return the CPU to its normal frequency.
2. "Hardware resource conflicts": Common conflicts in sound card or display card settings cause abnormal errors. In addition, the interruption of other devices, DMA or port conflicts may cause a few drivers to generate exceptions, resulting in crashes. The solution is to start in "Safe Mode" and make appropriate adjustments in "Control Panel"-> "System"-> "Device Management". "Inferior parts": a few unscrupulous businessmen use low-quality boards and memory when assembling machines for customers, and some even sell counterfeit motherboards and polished CPUs and memory modules. Such machines are very unstable during operation. Crashes are inevitable. Therefore, users should be vigilant when purchasing machines.
3. "Poor heat dissipation": The monitor, power supply and CPU generate a lot of heat during work, so good physical ventilation is very important. If the monitor is overheated, it will cause color and image distortion and shorten the life of the monitor. Working for too long will also cause the power supply or monitor to dissipate heat and cause the computer to freeze. The heat dissipation of the CPU is an important issue related to the stability of the computer operation, and it is also the "severe disaster area" where the heat dissipation failure occurs.
4. "Dust killer": Too much dust in the machine will also cause a crash. If the floppy drive magnetic head or the optical drive laser head is contaminated with too much dust, it will cause read and write errors, which will seriously cause the computer to crash.
Several common phenomena of computer crashes and their solutions:
1. When the application is running or crashes after running, and the chassis speaker will emit a "beep ...... beep ......" sound when you move the mouse, and no response is clicked, it means that the program has not been closed normally and has been occupying the system Resources. In this case, you can generally close the program by force. Press the "Ctrl", "Alt" and "Del" keys at the same time, a dialog box will pop up, generally directly select the program that was running before the crash, and then click the "end task" button to return to normal * Working status.
2. If the crash occurs only when running certain specific applications, it is likely that the application is infected with a virus. At this time, we need to use an antivirus software to perform a "security check" on all files in the hard disk. Too.
3. If the computer always restarts suddenly, the problem should appear in the power supply, which is caused by the output voltage of the power supply or the instability of the local mains. At this time, it is best to find a professional to test it. If it is a problem of the power supply itself, hurry up Replace, so as not to cause greater losses. In addition to the above three points, for those who frequently go online, we must pay special attention to whether some "hacker" software is behind the system. Crash when exiting the system. If Windows cannot shut down completely, it will write the data in the disk buffer to the hard disk, which will enter an infinite loop. Unless the user restarts the system, no other programs or instructions can be executed. The cause of this situation is mainly caused by improper Windows system settings or some driver settings. The solution is usually to enter "System" from the "Control Panel" and then open the "Device Manager" to see if There is a problematic hardware device (there is a yellow "!" Icon in front of the name), we can delete (disable) the device, or reinstall the driver for the device. In addition, it is also necessary to check whether the system is running some DOS programs with memory resident in the background. Generally speaking, these problems can be solved by these methods. Having seen the above crashes and their solutions, I believe you will not be in a hurry when you encounter these situations in the future. Of course, what we have introduced here is not very comprehensive, and the specific situation needs your specific analysis.
System prompt for missing files: Cannot find a device file that may be needed to run Windouws or a Windows application. The Windows registry or SYSTEM.INI file refers to this device file, but the device file no longer exists. If you delted this file or purpose, try uninstalling the associated application uesing its uninstall or setup program. If you still want to use the application associated with this device file, try reinstalling that appli cation to replace the missing file. C: \ WINDOWS \ SYSTEM \ VMM32 \ IOS .VXD Press a key to cntinue
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