Computer crash caused by improper human operation
In many cases, the computer used to run normally, but after the operator did something, it frequently crashed or could not use the computer normally at all.
1, crash after modifying BIOS settings.
Q: Modifying the BIOS can optimize system performance. Why is the system unstable after I change the BIOS settings according to the skills introduced in computer newspapers and periodicals?
A: Modifying the BIOS is definitely the patent of "super user". Some novice users are eager to learn. After reading some articles, in order to improve and optimize their system performance, they often modify some setting parameters in BIOS, such as hard disk parameters, memory parameters, CPU parameters, chipset parameters and so on. However, some technical articles are wrong in themselves, and the meaning expressed is easily misunderstood or the scope of application is limited. When the default settings of the computer are modified, the system becomes unstable and often crashes, but at the same time it can't enter the Windows system at all. For this kind of fault, it is usually only necessary to modify the BIOS settings accordingly or simply restore the default values.
2. Deleting system files by mistake leads to system crash.
Q: I am a "novice". In order to save hard disk space, I deleted some "irrelevant files" in the Windows directory, so I can't get into the operating system when I boot.
Answer: Some important system files in the "C:\Windows" directory and its subdirectories are deleted by mistake or accidentally lost or damaged, which will lead to frequent system crashes or no access to the system at all. For this kind of fault, it is sometimes difficult to recover the system directly. The simplest solution is the cover the installation window, that is, reinstall Windows in the original installation directory without formatting the Windows partition.
3, abnormal shutdown caused by the crash
Q: Sometimes the computer shuts down abnormally (such as suddenly losing power). Colleagues around me reminded me that this would cause a crash and damage the hard disk. Is it true?/You don't say.
A: In the absence of Windows automatic shutdown program, usually an illegal shutdown will not cause much harm (because the probability of failure is not great), but if it is illegal for a long time, it may cause file damage and loss, unstable system operation and even hardware damage. In addition, sometimes this illegal shutdown is likely to cause logical errors in the hard disk and frequent crashes. Fortunately, after the illegal shutdown, the system will automatically scan the disk, correct errors and eliminate hidden dangers, but some people will skip it and prevent the system from checking automatically. It is recommended not to do this, or you will regret it if there is a track with bad logic.
4. Hot-plug hardware equipment leads to crash.
Q: Don't all hardware support "hot plug" now, but why can some hardware be damaged by direct hot plug?
A: With the development of science and technology, many devices now support hot plug, such as USB devices and 1394 devices. However, according to practical experience, most hardware operations should be completed in the power-off state, otherwise it is likely to cause system crash or even permanent hardware damage. The crash caused by hot plug can make the system run again only by restarting the computer, and will not cause hardware damage. However, it is recommended not to hot plug conventional hardware devices. After all, for individual users, "security" is paramount.
5, overclocking caused the crash.
Q: Why is overclocking so easy to cause a crash?
A: Many DIY experts like to overclock all kinds of hardware, some are single-CPU, and some are super-everything. Taking CPU overclocking as an example, the speed of CPU accessing data in memory is faster than the speed of exchanging data between memory and hard disk. Overclocking makes this contradiction more prominent, exacerbates the situation that the required data cannot be found in memory or virtual memory, and will lead to "abnormal errors". In addition, if you run large-scale software (such as 3D games) for a long time or multitask after overclocking, the temperature of the CPU chip is likely to exceed the normal working range, leading to system crash or restart. Excessive temperature may also cause electrons to drift and damage CPU. So overclocking can improve the system performance, but it will also reduce its stability. Of course, the solution is just to reset the operating frequency of each device to the default value. If it must be exceeded, the cooling system must be checked regularly or the cooling work must be strengthened. When overclocking, the frequency should not be too high, and do not pursue overclocking in summer.
Second, some software caused the computer to crash.
1. After installing a certain software, it will crash as soon as it runs.
Q: Not long ago, a fax software was installed, and it crashed just after it started running, without even prompting. Can you explain why?
A: Sometimes, this phenomenon is more likely to happen when we install a software that is very strict with the system, or a special software. At this time, we will suspect that there may be a problem with software and hardware compatibility. Of course, sometimes the old operating system will also lead to such software and hardware compatibility problems. You can try to upgrade the operating system first or simply give up (uninstall) the software and use other similar software.
2. The dynamic link library file is lost, resulting in a crash.
Q: Recently, I installed several softwares, but when I started QQ2004 again, I was prompted, "I can't find what I need. DLL file -BASICCTRLDLL DLL”。 What caused this?
A: Files with the extension of DLL are dynamic link library files, which play a very important role in the Windows operating system. These files are essentially * * * files, that is, a DLL file may need to be called by multiple softwares at runtime. If we delete a software with imperfect uninstallation program, the anti-installation program of the software will record the files it has installed and prepare to delete them one by one. At this time, it is easy to see that the deleted dynamic link library file will also be used by other software. Generally speaking, the dynamic link library file used by a software will be copied to the computer when installing the software, so reinstalling the corresponding application software can solve the problem of losing the dynamic link library.
3. Too many random programs will cause inexplicable crashes.
Q: My machine configuration is high enough. Why is the system always slow to start? Crash easily?
A: The system resources consumed by each computer are different, mainly due to the different startup items loaded by each computer. The amount of system resources directly affects the stable operation of the machine. Loading too many startup items during computer startup will greatly slow down the startup speed of the system, which is often the most typical root cause of system crash. The solution is also very simple, that is, to minimize the random startup program of the system. Type msconfig“Run "in the start menu and run the command dialog box, then press enter to open the system configuration utility screen (Figure 3). Keep the options that must be kept, and choose unnecessary and meaningless options.
4, the use of trial version, beta software caused by the crash.
Q: I like to try to use some new software, but I often download trial versions and beta versions of some free software. I heard that this kind of software is not perfect and it is easy to cause computer failure?
A: With the popularity of the Internet, many people like to download all kinds of software from the Internet to use, but many of them are trial versions or beta versions. The purpose of this software is to let users check its reliability and stability, so as to make appropriate improvements when it is officially released. So it usually has some bugs or is not stable enough in some ways. If you often crash or occasionally crash after installing a certain kind of software, you might as well try uninstalling it, and usually the fault will be solved.
5. Illegal uninstallation of the software causes the machine to crash.
Q: I heard that uninstalling software also has deep knowledge. Maybe it will destroy the system and make the machine unstable?
A: The system has really high requirements for uninstalling software. If it's not good, I really want to return it. About software uninstallation, the software channel has a detailed introduction, so I won't go into details here. So remember, when uninstalling the software, don't directly delete the directory where the software is installed. If you delete it directly, there will be a lot of garbage in the registry and Windows directory. Over time, the system will become unstable, leading to a crash.
6, software conflict caused by the crash
Q: I know that the most direct causes of the crash are dynamic link libraries, executable files and virtual device drivers. Preempt the same resources, resulting in an access conflict of invalid or unknown instructions. I heard that software conflicts can also lead to crashes. Is it true?/You don't say.
A: The same is true for software. As more and more softwares are developed by different software companies, and it is impossible for these softwares to be fully familiar with and cooperate with each other in the development process, it is easy for everyone to call the same DLL or the same physical address at the same time when running these softwares together, thus causing conflicts. At this time, the computer system doesn't know which request to give priority to, which leads to system disorder and computer crash.
7. Incorrect software upgrade
Q: Generally speaking, there is no problem with software upgrade, but several softwares I have upgraded can't work well, and sometimes they crash. Why?
A: Most people may think that there will be no problem with software upgrade. In fact, some components will be upgraded during the upgrade process, but when other programs may not support the upgraded components, it will lead to a crash. Therefore, when upgrading the software, we should also pay attention to the operation, first understand the characteristics, performance and troubleshooting methods of the upgraded software before upgrading.
8. A crash occurred after updating the hardware driver.
Q: In order to improve the hardware performance, I updated a hardware driver myself, but the machine often crashes. What is the general reason?
A: In order to improve hardware performance, hardware manufacturers often upgrade hardware drivers. But sometimes the driver of one hardware device conflicts with the new driver of another device, or the new driver itself has a BUG, or the new driver downloaded from the Internet is damaged, or the new driver may have a version conflict with a file in the system, resulting in a crash. Because there are many possibilities to cause this fault, we should solve it accordingly. For example: start in Safe Mode, and then check the adjustment in Device Manager; Or try downloading this new driver from other places.
9. Too little remaining space on the hard disk or too much disk fragmentation can also lead to "crash" failure.
Q: My machine was bought five years ago, and it often crashes recently. I consulted some "experts" and they said that the main reason was that the remaining space on my hard disk was too small. Is this really the reason?
A: Because some large-scale applications need a lot of memory when running, if the physical memory is insufficient, you need to use the virtual memory on the hard disk. At this point, if the remaining space on the hard disk is too small, it may cause a crash. In addition, if your computer doesn't tidy up the hard disk for a long time, it will make the system resources tense and crash. Of course, if there are too many junk files in the hard disk, it will also make it difficult for the hard disk to find files and lead to a crash. The performance of this kind of fault is also quite special. Usually, when the hard disk continuously "crazily" reads and writes the disk, it will suddenly crash. So you'd better set the virtual memory in a partition with a large remaining space, and regularly clean up all kinds of junk files and defragment the disk.
Some hardware reasons caused the computer to crash.
1, dust "killer" causes frequent crashes.
Q: I heard that serious dust can also cause frequent machine crashes?
A: After a new computer has been used in ordinary cities in China for about a year, there will be a lot of dust in it. If you enter the slot of a board, it may cause the board to crash or other faults due to poor contact, and often crash for no reason. In addition, too much dust in the machine will have a bad influence on the heat dissipation of some important computer hardware equipment. If CPU, graphics card and other important hardware are not well cooled, it will cause a crash or automatic restart. Although this phenomenon is usually irregular, the longer it takes, the more frequent it will be. If there is too much dust on the floppy disk head or the laser head of the CD-ROM drive, it will make it difficult to read and write the disk, which will seriously cause the computer to hang up. So you'd better dust the computer once a year. Of course, if you are just a beginner, you should find an old hand to operate it for you to avoid other faults. Of course, this is also a very good way to keep the computer room clean.
2. The computer crashed because of poor internal heat dissipation.
Q: Is it easy to crash due to poor cooling and ventilation?
A: Because the main component of electronic components in a computer is silicon, the working state of this component is greatly affected by temperature. When the computer is working, the temperature of electronic components will rise, and even the phenomenon of electron migration will occur, thus changing the current working state and causing the computer to suddenly crash at work. Regularly check the working state of the fan in the computer and lubricate it regularly to avoid such failures. If there are frequent crashes every time you use it, you need to open the chassis and observe which fan is abnormal (such as loud noise or obviously slow down or stop running). ) or which hardware temperature is abnormal (such as touching the chip by hand or the heat sink is very hot). ) when the computer is running, do the corresponding processing.
3. There is a conflict in memory, resulting in a crash for no reason.
Q: My computer often crashes for no reason, sometimes it loses its response, but it can be operated again after a while. I wonder how this happened.
A: This is more likely to happen when multiple softwares are running at the same time. Although sometimes a lot of software runs at the same time, everything is normal, but sometimes it suddenly crashes inexplicably, and when these applications are restarted, it is normal again. In fact, many of these failures are just fake crashes, mostly because of the conflict of memory resources. Such crashes are usually freeze-frame crashes with no response. This kind of fault can only be avoided and cannot be eradicated, that is, try not to let many programs run at the same time. It is best to close the unused software immediately and try to use well-known software to avoid this kind of failure. Of course, if you are patient, the computer may "wake up" from suspended animation after a while.
4. Irregular crashes caused by poor plug-in contact.
Q: I cleaned the machine once recently, but I didn't expect the system to be unstable. Why is there a problem after cleaning the machine?
A: Obviously, this is a fault caused by poor contact of the plug-in. This kind of fault is easy to distinguish, because no matter how small a program you run, it may crash, sometimes it will crash when you start it, and sometimes it will not crash when you run a large program for a long time. So the fault point of this kind of fault is still easy to find. Usually you just need to unplug everything you can (such as the video card and the power plug) and plug it in. Of course, if there is rust, you must remove it first, or replace it with a new one.
5, the use of inferior accessories led to frequent crashes.
Q: My machine is out of date and often crashes for no reason. I saved one for 2500 yuan, but I didn't expect the new machine to crash frequently. It's really annoying What do you think I should do?
A: Most of these failures are due to the use of inferior brand products, second-hand products or repaired products. When assembling compatible computers for customers, a few unscrupulous businessmen use inferior boards and memory, and some even sell fake motherboards and reused CPU and memory. This kind of machine is very unstable in operation, and collision is inevitable. Therefore, users should be vigilant when purchasing a machine. They can use some newer tools and software to test the computer and test the machine continuously for a long time (for example, 72 hours) to strive for the longest warranty time.
6, hard disk failure caused by the crash
Q: I use a domestic brand machine. In less than two years, my hard disk often reported errors and crashed. How should I solve it?
A: Most of the domestic brand machines used by most employees in my unit are hard disks first, which is obviously a hard disk quality problem. However, the hard disk will be replaced for free within three years. In addition, some older machines are prone to crash during operation due to improper use, aging hard disks or bad tracks and sectors. The fault on the hard disk must be repaired by special tools, software and maintenance personnel. If the damage is serious, only the hard disk can be replaced.
The virus caused the computer to crash.
1, crashed due to computer virus infection.
Q: Rising 2003 antivirus software is installed on my computer. After the machine became unstable, others changed an anti-virus software and found many viruses. Why?
A: Some viruses will make the computer work efficiency and system resources drop sharply, leading to frequent crashes. At this time, it is necessary to use anti-virus software to conduct comprehensive virus investigation and anti-virus, and upgrade the anti-virus software regularly.
2. The system often crashes after using virus real-time monitoring software or firewall.
Q: In order to prevent virus attacks, I installed several antivirus software, but the system is always unstable. Can't you install multiple antivirus software at the same time?
A: Users who have been attacked by viruses can be described as "talking about the color change of viruses". Many people simply install multiple virus real-time monitoring software or firewalls on their machines for fear that viruses will damage their computers. Different kinds of antivirus software and virus firewall will run at the same time, which may even cause users to crash without a chance to shut down these software systems. Generally speaking, using well-known antivirus software can protect computers from viruses. What we need to do is to upgrade its virus database in time.
Five, individual multimedia applications lead to computer crashes.
Multimedia computer can bring people into a colorful world, but it requires high conditions. It needs a high-performance computer, rich system resources, non-conflicting hardware settings, drivers and graphics cards that support acceleration functions, and playback software with high decoding efficiency. Otherwise, constant failure will bring you great trouble.
1, software and hardware are difficult or incompatible.
Q: Why does it always crash when running 3D animation and graphic design software such as Photoshop and AutoCAD?
Answer: How will different models of CPU react when these heavyweight multimedia, 3D animation and graphic design software are started? If the CPU effect is not good, it is likely to cause a crash. We can choose the corresponding hardware equipment or software according to the actual situation.
2. It always crashes when playing high-quality videos.
Q: I installed XP system, but it always crashes inexplicably when playing some movies. What is the reason?
A: Playing video requires high software and hardware environment. First of all, you should use excellent media playing software such as Storm Video, realone, V8 and media player. , and then upgrade DirectX to a higher version according to the function of the machine graphics card, update the graphics card driver, and install the appropriate decoder. Generally speaking, the crash can be eliminated. In addition, because the video file is relatively large, it will take a lot of time to load. At this time, the computer may have a fake crash and will return to normal after a while.
3, watching DVD is easy to crash
Q: Watching DVD movies on the computer is a feeling that you can't experience on TV. However, there is often such a trouble that watching DVD-ROM on the computer is easy to crash. Why?
A: At present, even manufacturers and hardware media have no clear explanation for watching DVD-ROM crash. It seems that this problem is more complicated. The main reasons for watching DVD crash are: for example, there are some problems in power management of some old motherboards ACPI, and sometimes soft decompression software can't disable screen saver and sleep state. , causing the system to crash when it enters the power saving state. For another example, the IDE drivers of some VIA/SIS chipset motherboards are old, or they are not perfect compared with these chipsets, resulting in the CD-ROM drive crashing in DMA mode. In addition, some optical discs have uneven surfaces. Because DVD-ROM needs more discs, there will be many random crashes. In addition, the advanced power management problem of ACPI caused an unfounded and unreasonable crash.
From the above example, it is not a good thing for ordinary users, but it is not inevitable. As long as the user operates the computer according to normal procedures, it is believed that the probability of computer crash will be reduced.