Core Tip: The crash is the most common type of POS cash register or computer failure, and it is also the most troublesome one. Because the fault point can be large or small, and there are many reasons for the crash, in addition, the fault phenomenon is also diverse, and the fault phenomenon is generally classified into two categories - regular crash and random crash. As for the crash phenomenon, the subjective performance of people is mostly "blue screen", the screen "freeze" does not respond (and the mouse and keyboard can not be input), often illegal operation (or forcibly close a program), lost before entering the operating system Reaction, etc., pay attention to distinguish the system is slow, to wait, this kind of is not a crash, but the processing power is not in line with your use.
At first glance, it seems that the crash is very "terrible", but the cause of the failure will never be separated from the hardware and software. Therefore, as long as we know the specific cause of the fault, we can completely "smooth" the crash and even eliminate it. The following is a description of the cause of the computer "dead" and its treatment method (in combination with the failure phenomenon) in the premise "conditions" of the crash, I hope that there will be some help for everyone.
The first type of situation: occasional crashes and frequent occurrences under normal use, or frequent occurrences after a sudden crash.
1. Frequent "dead" failures caused by excessive dust
After a new POS cash register is used in a general city shopping mall in China for a year or so, there will be a lot of dust inside. If it enters the slot of a certain board, it may cause the board to contact badly and crash. Other failures, and often crashes without cause.
In addition, too much dust inside the machine will have a bad influence on the heat dissipation of some important computer hardware devices. If the heat is not good, such as CPU and graphics card, it will cause blue screen or flower screen or freeze or black screen crash. Although there is usually no law in the phenomenon, the longer the usage time, the more frequent the number of crashes. Therefore, it is best to carry out dust removal on the computer for one year. Of course, professionals should operate the dust removal to avoid other malfunctions. Of course, it is also a very good measure to keep the machine clean.
2. Frequent "dead" failure due to poor heat dissipation of a certain hardware
CPU, graphics card, hard disk, power supply and other hardware are very hot in the work, but most of them have their own cooling fan, so usually do not crash, but if there is too much dust on the fan If the lubrication is poor or the wear is severe or severely aging, then the heat dissipation of these hardware devices is problematic. Over time, as the situation worsens, there will be frequent crashes or restarts after a period of use.
Therefore, you should periodically check the working status of each fan in the mainframe and periodically lubricate it to avoid such failures. If there have been frequent crashes every time you use it, don't worry, just open the case and observe which fan is abnormal (such as loud noise or slow down or stop), or which one is running while the computer is running. The hardware temperature is abnormal (such as touching a chip or heat sink very hot, etc.), and then you can do the corresponding processing.
3, due to conflicts in the memory, resulting in no cause "crash" failure
This situation is more likely to occur when running multiple software at the same time. Although sometimes it is normal to run a lot of software at the same time, sometimes it suddenly crashes inexplicably. It is quite normal to run these applications after restarting. Many of these failures are just fake crashes. The reason is mostly because of memory resource conflicts. The application software runs in memory, but some application software will use the same memory address with another software for design reasons. Then there will be conflicts. This type of crash is usually a freeze or a reboot or a blue screen or a "illegal operation" or loss of response.
For such faults, you can only avoid and can't eradicate—that is, try not to let many programs run at the same time. It is best to turn off the unused software, and try to use good software to avoid such faults.
4. Irregular "dead" phenomenon due to poor contact of the connector
This kind of fault is better to judge, because no matter how small the program you run, it may crash, and sometimes it will freeze at startup, and sometimes it will not crash when running large programs for a long time. Therefore, the fault point of such a fault is still very easy to find. Usually, you just need to pull out all the things that can be pulled out (such as the video card and power plug), then clean it and plug it in. Of course, if there is any rust. If you have it, you must first remove the rust or replace the rusted part.
5, frequent "dead" failure due to memory module failure
As the operating frequency of the memory stick is getting higher and higher, the heat generation is also increased, and the stability is relatively poor. Usually, the memory stick fault refers to the looseness of the memory stick, the solder joint or the memory chip itself is damaged or not. Stable and so on.
If you often have a memory-related illegal operation such as a crash in the WINDOWS operating system or directly restart the machine by prompting the registry error, then we must first check if the memory is loose or dusty into the memory. In the slot, if you don't find any abnormality, you should try to change the memory stick. If everything is normal, it means that the memory stick itself may be faulty. Of course, sometimes long-term overclocking will also cause the memory stick to age and become unstable. .
6. If there is too little free space on the hard disk or too much disk fragmentation, it will cause a "dead" failure. Because some large 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. If there is too little space, then there is a possibility of causing a crash. In addition, if your computer does not defragment the hard disk for a long time, it will make the system resources tight and crash. Of course, if there are too many junk files in the hard disk, it will cause the hard disk to find the file and cause the crash. The performance of such faults is also quite special - usually in the continuous "crazy" hard disk read and write operations will suddenly freeze or blue screen of death.
Therefore, it is best to set the virtual memory to a partition with a large amount of free space, and regularly clean up various junk files and regularly defragment the disk.
7, frequent "dead" failure due to hard disk failure
If the hard disk is severely aged or shaken during operation or there are logical, physical bad sectors or bad sectors, then the computer is prone to frequent crashes while it is running. As for the processing method, it is better to replace the hard disk. Of course, if it is only a logic error, it can be repaired with various repair software. Since some of the failure points of such failures are not easy to find, I recommend that you regularly perform a "disk scan program" (once every two weeks) so that you can know what your hard drive is.
The second type of situation: after performing some kind of operation or an unexpected event, there are frequent crashes or no normal use.
1. A "dead" failure occurs after the BIOS settings have been modified.
This fault is very common among the primary users. Some beginners are looking at some misleading or expressive articles that are easily misunderstood. In order to improve the performance of the system, the hard disk parameter settings and mode settings are often set. The memory parameters, CPU parameters and other settings have been set to some errors, but the system becomes unstable and frequently crashes, but the WINDOWS system can't be entered at all, and even worse, it can't be opened. For computers that can't be turned on, usually just clear the BIOS settings. If you can't enter WINDOWS and enter DOS directly or crash when you enter WINDOWS, or you are often required to enter "safe mode", then you should check the BIOS. The hard disk and CPU settings, in addition, if the ECC function of the memory without ECC function is turned on, it will also crash due to memory error, then you can make the corresponding modification or simply restore the default value.
2, after installing a certain software, as long as you run a certain software or use a certain hardware, there will be a "dead" phenomenon.
Usually, after installing a software that is very strict on the system (such as some 3D software) or a special software (such as some fax software), we will suspect that there may be hardware and software. Compatibility issues, of course, sometimes the operating system is too old will lead to such software and hardware compatibility issues, you can upgrade the operating system first try or simply give up (uninstall) the software and use other similar software (high visibility) This usually does not happen with software). With the prevalence of the Internet, many people download various software from the network for use, but there are many softwares that are trial or beta. Such software usually has some bugs or is not stable enough in some way (especially If it is a beta version, if you have a frequent crash or occasional crash after installing such a software, you may wish to uninstall the software, usually the fault will be solved.
Of course, there are some softwares that cause a crash because one of their important files is corrupted. This kind of situation is more common on computers that used to be normal, but after a sudden incident, you only need to uninstall. The software can be reinstalled once. Of course, some software installers have fixes (such as IE and "Microsoft Visual Studio 6.0"). For such software, you usually need to fix it.
Note: If you crash after installing a new hardware device, it may be due to compatibility issues with the new software.
3. After a certain setting is made to the operating system, the "dead" failure occurs frequently.
After setting an error on the operating system, there will often be a crash, such as changing the computer usage from "desktop" to "web server", and setting the virtual memory size too small will also result in Crash when running large programs. Because of the cause of such failures, it is very good to find out - after all, what you have changed is still a matter of heart, so you can change it to the appropriate value or default value. In addition, it is best to turn off the hard disk hibernation function, because it sometimes causes unplanned crashes, especially when the hard disk is not frequently read or written.
4. After upgrading the operating system or replacing a large-capacity hard disk, it is caused by insufficient memory capacity.
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