When the weather is hot, the computer will freeze after about half an hour. Is it normal to start the process?

Not normal! My computer is fine even if it is turned on for 24 hours

The reason why the computer keeps restarting:

Poor cooling. The monitor, power supply and CPU generate a lot of heat during work, so it is very important to maintain good ventilation. Importantly, if the monitor overheats, it will cause color and image distortion and even shorten the life of the monitor. Working for too long can also lead to poor heat dissipation of the power supply or monitor, causing the computer to crash. CPU heat dissipation is an important issue related to the stability of computer operation, and it is also the "hardest hit area" for heat dissipation failures.

Improper movement. Excessive vibration during the movement of the computer will often loosen the internal components of the machine, resulting in poor contact and causing the computer to crash. Therefore, violent vibrations should be avoided when moving the computer.

Dust Killer Too much dust in the machine can also cause a crash. If the magnetic head of the floppy drive or the laser head of the optical drive is contaminated with too much dust, it will cause read and write errors, and in severe cases, the computer will crash.

Device mismatch: If the main frequency of the motherboard does not match the main frequency of the CPU, or the FSB is set too high when overclocking the old motherboard, the stability of the operation may not be guaranteed, resulting in frequent crashes.

Incompatible software and hardware. 3D software and some special software may not be started or even installed normally on some computers. There may be software and hardware compatibility issues.

Memory module failure is mainly caused by loose memory modules, weak soldering or the quality of the memory chip itself. The memory module contact failure should be eliminated according to the specific situation. If there is a problem with the quality of the memory module, the memory needs to be replaced to solve the problem.

Hard disk failure is mainly due to the aging of the hard disk or bad sectors and bad sectors caused by improper use. In this way, the machine will easily crash when running. You can use special tools and software to troubleshoot. If the damage is serious, the hard drive can only be replaced. In addition, for motherboards that do not support UDMA 66/100, attention should be paid to the setting of the hard disk operating mode in CMOS.

CPU overclocking Overclocking increases the working frequency of the CPU, and at the same time, its performance may become unstable. The reason is that the speed at which the CPU accesses data in the memory is inherently faster than the speed at which the memory and the hard disk exchange data. Overclocking makes this contradiction more prominent and aggravates the situation where the required data cannot be found in the memory or virtual memory. This will cause an "exception error". The solution is of course relatively simple, which is to return the CPU to its normal frequency.

Memory module failure is mainly caused by loose memory modules, weak soldering or the quality of the memory chip itself. The memory module contact failure should be eliminated according to the specific situation. If there is a problem with the quality of the memory module, the memory needs to be replaced to solve the problem.

Hard disk failure is mainly due to the aging of the hard disk or bad sectors and bad sectors caused by improper use. In this way, the machine will easily crash when running. You can use special tools and software to troubleshoot. If the damage is serious, the hard drive can only be replaced. In addition, for motherboards that do not support UDMA 66/100, attention should be paid to the setting of the hard disk operating mode in CMOS.

CPU overclocking Overclocking increases the working frequency of the CPU, and at the same time, its performance may become unstable. The reason is that the speed at which the CPU accesses data in the memory is inherently faster than the speed at which the memory and the hard disk exchange data. Overclocking makes this contradiction more prominent and aggravates the situation where the required data cannot be found in the memory or virtual memory. This will cause an "exception error". The solution is of course relatively simple, which is to return the CPU to its normal frequency.

Hardware resource conflicts are caused by conflicting settings of the sound card or display card, causing abnormal errors. In addition, if there is a conflict between interrupts, DMA or ports of other devices, a few drivers may cause exceptions and even crash. The solution is to start in "Safe Mode" and make appropriate adjustments in "Control Panel" → "System" → "Device Management". For situations where exception errors occur in the driver, the registry can be modified. Select "Run", type "REGEDIT", enter the registry editor, use the "Find" function under the menu to find and delete all "primary keys" and "key values" related to the driver prefix string, and restart.

Insufficient memory capacity. The larger the memory capacity, the better. It should not be less than 0.5 to 1% of the hard disk capacity. If this problem occurs, you should replace it with a memory module with the largest capacity possible.

Inferior parts. A few unscrupulous merchants use low-quality boards and memory when assembling compatible machines for customers. Some even sell counterfeit motherboards and Remarked CPUs and memories. When such machines are running, It is very unstable and crashes are inevitable. Therefore, users should be vigilant when purchasing a computer, and can use some newer tools and software to test the computer, test the computer continuously for a long time (such as 72 hours), and strive for as long a warranty period as possible.

Crash caused by software

Virus infection Viruses can drastically reduce computer work efficiency and cause frequent crashes. At this time, we need to use anti-virus software such as KV300, Kingsoft Antivirus, Rising, etc. to conduct comprehensive virus checking and anti-virus, and update the anti-virus software regularly.

Improper CMOS settings This fault phenomenon is very common. For example, improper hard disk parameter settings, mode settings, and memory parameter settings cause the computer to fail to start. If the memory without ECC function is set to have ECC function, it will cause a crash due to memory error.

Accidental deletion of system files. Since Windows 9x requires Command.com, Io.sys, Msdos.sys and other files to start, if these files are damaged or accidentally deleted, even if the various hardware settings in CMOS are Being right doesn't help either. Solution: Use the startup disk of the same version of the operating system to start the computer, then type "SYS C:" and re-transfer the system files.

The initialization file is damaged. Since Windows 9x starts, it needs to read System.ini, Win.ini and registry files. If Config.sys and Autoexec.bat files exist, these two files will also be read. . As long as there are error messages in these files, a crash may occur, especially the four files System.ini, Win.ini, User.dat, and System.dat are particularly important.

1fuping111 -

There have been many posts about computer restarting problems recently, so I hereby post this post in the hope that it can solve everyone's problems.

The computer restarts for no reason. Reasons

1. Software

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1. Virus damage

Shortly after the advent of computers, computer viruses also emerged. When the Internet has become the information artery of today's society, viruses spread more easily, so they also interfere with and destroy our normal work from time to time. A typical example is the "shock wave" virus that caused serious damage to computers around the world some time ago. When it attacks, it will also prompt that the system will automatically start in 60 seconds. In fact, as early as the DOS era, there were many viruses that could automatically restart your computer.

As to whether it is caused by a virus, we can use the latest version of anti-virus software for anti-virus. Generally, viruses will be found. Of course, there is another possibility that someone maliciously invaded your computer while you were surfing the Internet and placed a Trojan horse program. In this way, the other party can remotely control all activities of your computer, including, of course, restarting your computer. Some Trojans are not easy to remove, so it is best to reinstall the operating system.

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2. System files are damaged

When system files are damaged, such as KERNEL32.DLL under Win2K, fonts under the Win98 FONTS directory, etc., basic files when the system is running are damaged, and the system will not be able to complete initialization at startup. And force a restart. You can do an experiment and try renaming the font "FONTS" in the WIN98 directory. When you turn it on again, our computer will start repeatedly.

For this kind of failure, because you cannot enter the normal desktop, you can only overwrite the installation or reinstall.

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3. Scheduling software or scheduled task software works

If you set up a restart or load certain work programs in the "Scheduled Task Bar", when the scheduled time comes, the computer will also start again. In this case, we can open the "Startup" item, check whether there are executable files or other scheduled work programs that we are not familiar with, block them, and then turn on the computer to check. Of course, we can also directly enter the "Msconfig" command in "Run" to select startup items.

2. Hardware

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1. The mains voltage is unstable

The working voltage range of the switching power supply of general home computers is 170V-240V. When the mains voltage is lower than 170V, the computer will automatically restart or shut down. Because we sometimes cannot feel the fluctuations in the mains voltage, we mistakenly think that the computer has automatically restarted inexplicably.

Solution: For areas with frequent unstable power supply, we can purchase UPS power supply or 130-260V wide switching power supply to ensure stable operation of the computer.

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2. The quality of the power strip or power socket is poor and the contact is poor

Most of the power strips on the market are of poor quality. The internal contacts are welded by hand, and acidic flux is often used, which can easily lead to problems in the future. Oxidation of solder joints during use may cause open circuits or leakage between live and neutral wires. Due to manual welding and the poor elasticity of the phosphor brass sheet used, it will easily lose its elasticity after a short period of time, resulting in poor contact with the power plug of the host or monitor, resulting in a large contact resistance, which will occur when working for a long time. A large amount of heat will cause a virtual connection, which will appear as the host restarts or the monitor flashes black.

Another possibility is the wall sockets we use at home. Most wall sockets are not installed by professionals, so the wiring inside the sockets is very non-standard, especially if we often use high-power sockets. When using an electric heater, it is easy to cause internal heat to oxidize the virtual connection, causing intermittent power outages, causing the computer to restart or the monitor to blink.

Solution:

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① Don’t try to save money by buying cheap and low-quality power strips. Buy some famous brand power strips. Because the inside is automatically installed and crimped by machines, no manual welding is used.

② As for whether the problem is a virtual connection inside the wall socket, we can try changing the host to a wall socket to see if the same automatic restart problem exists.

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3. The power of the computer power supply is insufficient or the performance is poor

This situation is also relatively common, especially when we add new equipment to our host, such as replacing a high-end graphics card, adding a recorder, adding After the hard disk, it is easy to appear. When the host is working at full speed, such as running a large-scale 3D game, performing high-speed burning or preparing to read a disc, and just starting up, the dual hard disk copy data may stop output due to power protection caused by insufficient instantaneous power supply, but due to the current After the power supply stops output, the load is reduced, and then the power supply starts again. Because the recovery time after protection is very short, the performance given to us is that the host automatically restarts.

Another situation is that the performance of the host's switching power supply is poor. Although the voltage is stable and within the normal allowable range, the harmonic content in its output power supply is too large, which will also cause the host to frequently fail. crash or restart. In this case, it is normal when we use a multimeter to test the voltage. It is best to replace it with a good power supply.

Solution: Replace with a high-quality, high-power computer power supply now.

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4. The mains plug of the host switching power supply is loose, has poor contact, and is not plugged in tightly

This situation will mostly occur on DIY machines. The power cord provided with the host power supply has not passed 3C certification and does not match the power socket. Matching. When we shake the table or touch the host, the host will automatically restart, usually accompanied by a slight "pop" sound from an electric spark.

Solution: Replace with a high-quality 3C certified power cord.

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5. The motherboard's power supply ATX20 socket has a weak solder and poor contact.

This kind of fault is not common, but it does exist. The main reason is to move the ATX 20-pin plug left and right when the host is working normally to see if the host will automatically restart. At the same time, check whether the reed inside the 20-pin power plug is oxidized, which can easily lead to high contact resistance and poor contact, causing the host to crash or restart. Sometimes you also need to check whether the connecting wires at the end of the 20-pin plug are secure.

Solution:

① If the motherboard solder joints are weak, just use a soldering iron to repair them. Note: When welding computer boards such as motherboards, hard drives, graphics cards, etc., be sure to ground the soldering iron or unplug the power plug during welding.

② If it is a power supply problem, it is best to replace it with a good one.

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6． CPU problem

Some functional circuits inside the CPU are damaged, and when the second-level cache is damaged, the computer can still start, and even enter the normal desktop for normal operations, but when a special function is performed, it will restart or Crash, such as drawing tables, playing VCD, playing games, etc.

Solution: Try to block the second-level cache (L2) or first-level cache (L1) in CMOS to see if the host can run normally; otherwise, just use a good CPU to replace it. If it can run normally after being shielded, it can still be used. Although it is slower, it will definitely save money.

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7． Memory problem

If a chip on the memory stick is not completely damaged, it is likely to pass the self-test (after all, most of them have POST set), but it will cause a problem due to the high heat generated by the memory during operation. Function failure and unexpected restart. Most of the time, when the memory is damaged, an alarm will sound when the computer is turned on. However, if the memory is damaged, the alarm will not alarm, and the problem of not powering on will still occur. It is best to use troubleshooting methods to quickly determine the fault location.

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8. Optical drive problems

If the optical drive is internally damaged, it will also cause the host to start slowly or fail to pass the self-test, or it may suddenly restart during work. If the latter situation occurs after we replace the optical drive, it is most likely caused by the different power consumption of the optical drive. What everyone needs to understand is that although the ATPI interface of the optical drive is the same, the pin definitions of different manufacturers are different. If there is a problem with our hard disk cable, it may happen that there is no problem with a certain brand of optical drive, but it will not work with other brands. The brand-name optical drive cannot work, which requires everyone's attention.

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9. There is a problem with the quality of the RESET key.

If the RESET switch is damaged and the internal reed is always in a short-circuited position, the host will not be able to power on and self-check. However, when the elasticity of the RESET switch weakens or the button on the chassis is difficult to pop up when pressed, it will occur during use because the chassis is accidentally touched or the host suddenly restarts during normal use. Therefore, when the RESET switch cannot be pressed freely, we must check it carefully. It is best to replace it with a new RESET button switch or lubricate the external button of the chassis.

There is another situation where the insulation layer of the RESET switch leads in the chassis is peeled off too much during welding. In addition, multiple unboxings during use will cause the RESET switch wires to be too close. Collision, causing the host to automatically restart.

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10． Automatically restarts when the network card or parallel port, serial port, or USB interface is connected to an external device

This situation is usually caused by a fault in the peripheral, such as the parallel port of the printer being damaged, a pin short-circuited to the ground, or the USB device Damage, short circuit to ground, substandard workmanship of the network card, etc. When we use these devices, the computer will restart due to a sudden power short circuit.

3. Other reasons

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1. Poor heat dissipation or temperature measurement failure

CPU heat dissipation is poor. Common problems are that the CPU radiator fixing clip falls off, there is foreign matter between the CPU radiator and the CPU, and the CPU fan accumulates heat on the radiator after long-term use. Too much dust, these conditions will lead to poor CPU heat dissipation, excessive accumulation of temperature and automatic restart.

There is also a problem that the temperature measurement probe under the CPU is damaged or the temperature measurement circuit inside the P4 CPU is damaged. The BIOS on the motherboard has a bug and the temperature measurement is inaccurate under certain special conditions. These will cause the host to fail during operation. Automatic protective restart during the process.

Finally, if the CPU protection temperature we set in CMOS is too low, it will also cause the host to automatically restart.

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2. Fan speed measurement failure

When the speed measurement circuit of the CPU fan is damaged or the speed measurement line is intermittently disconnected, because the motherboard cannot detect the fan speed, it will mistakenly think that the fan has stopped and automatically shut down or restart. However, when we checked You may see that the CPU fan rotates normally and the speed measurement is also normal.

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3. Strong magnetic interference

Don’t underestimate electromagnetic interference. Many times our computers crash and restart due to interference. These interferences come from the CPU fan inside the chassis, the chassis fan, the graphics card fan, the graphics card, the motherboard, Interference from hard drives also comes from external power lines, inverter air conditioners and even large equipment such as cars. If the interference performance of our host is poor or the shielding is poor, the host will restart unexpectedly or crash frequently.

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