Windows system >> Windows XP System Tutorial >> XP system basics

Resolve several major reasons for automatic system restart

In this article, the author summarizes the possible reasons for the automatic restart of the computer for your reference.

a software

1. Virus damage

Ever since the computer soon, computer viruses have emerged. When the network becomes the information artery of today's society, the spread of the virus is more convenient, so it interferes with and disrupts our normal work from time to time. More typical is the "shock wave" virus that caused serious damage to the global computer some time ago. It will also prompt the system to start automatically after 60 seconds. In fact, as early as in the DOS
era, many viruses can automatically restart your computer.

whether the virus for destruction, we can use the latest version of antivirus software antivirus, virus usually found. Of course, there is also a possibility that someone is maliciously invading your computer when you are online, and a Trojan is placed. This allows the other party to remotely control all activities of your computer, including, of course, restarting your computer. For some Trojans, it is not easy to remove, it is best to reinstall the operating system.

2.

system file corruption when the file system is damaged, such as KERNEL32.DLL under Win2K, Win98FONTS fonts directory below basic file system is running is damaged, the system startup can not complete the initialization and forcing Restart. You can do a test and rename the font "FONTS" in the WIN98 directory. When you turn it on again, our computer will continue to restart.

For this failure, because they can not enter the normal desktop, only to install or reinstall the cover.

3. Timing software or scheduled task software works

If you set a reboot or load some work programs in the "Scheduled Taskbar", the computer will start again when the time is up. In this case, we can open the "start" item, check whether there are any unfamiliar execution files or other timed work programs, shield them and then boot them. Of course, we can also enter the "Msconfig" command directly in "Run" to select the startup item.

Second, hardware

1. The mains voltage is unstable

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

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

2. Poor quality of the power strip or power socket, poor contact

Most of the power strips on the market are of poor quality, the internal contacts are hand soldered, and acid flux is often used, which is easy to cause in the future. Oxidation of the solder joint during use causes an open circuit or leakage between the live and neutral lines. Because of the manual soldering, and because of the poor flexibility of the phosphor bronze sheet, it is easy to lose the elasticity after a long time, resulting in poor contact with the power plug of the host or the display, resulting in a large contact resistance, which will work for a long time. A large amount of heat causes a virtual connection, which means that the host reboots or the display black screen flashes.

There is also a wall socket that may be used in our home. Most wall sockets are not installed professionally, so the wiring inside the socket is very non-standard, especially if we use high-power electricity frequently. When the heater is warmed up, it is easy to cause internal heat and oxidation to form an intermittent power failure, causing the computer to restart or the display to blink.

Solution:

1 Do not save money and buy cheap power outlets, buy some brand-name power strips, because the inside is automatically installed by the machine No manual soldering.

② whether to issue an internal wall socket virtual access, we can host for a wall outlet to try to see if there is the same problem of automatic restart.

3. Lack of computer power supply or poor performance

this situation is more common, especially when we add new host their own equipment, such as the replacement of high-end graphics card, increasing the burner, add the hard disk After that, it is very easy to appear. When the host works at full speed, such as running a large 3D game, recording at high speed or preparing to read the disc, when the dual hard disk is copied, the data may be stopped due to insufficient power supply of the instantaneous power supply, but due to After the power supply stops outputting, the load is relieved and the power is turned on again. Because the recovery time after protection is very short, the performance given to us is that the host automatically restarts.

another case, a difference between the mains switch performance, while also allowing stable voltage is within the normal range, but because the output power in the harmonics content is too large will lead to frequent host Crash or reboot. In this case, it is normal for us to test the voltage with a multimeter. It is best to replace an excellent power supply for replacement.

solve: now for high power computer.

4. The mains plug of the main switch power supply is loose, the contact is poor, and it is not plugged in.

Most of the cases will appear on the DIY machine. The power cord of the main power supply is not certified by 3C, and it is not compatible with the power socket. . When we shake the table or touch the host, the host will automatically restart, usually accompanied by a slight electric slamming sound.

Solution: Replace the high quality 3C certified power cord.

5. ATX20 motherboard power outlet Weld, bad

this failure is not common, but it does exist, mainly in the host normal working, move around ATX20 pin plug, to see whether the host will automatically restart. At the same time, check the reed inside the 20-pin power plug for oxidation. This can easily lead to large contact resistance and poor contact, causing the host to freeze or restart. Sometimes it is necessary to check the connection of the 20-pin plug tail, whether it is secure.

Solution:

① If the board solder joints Weld, direct welding electric iron on it. Note: When soldering computer boards such as motherboards, hard disks, graphics cards, etc., be sure to ground the soldering iron well or unplug the power cord during soldering.

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

6. Will restart or crash problem

CPU when the CPU is part of the internal function circuit damage, when damage to the secondary cache, the computer can start, or even into the normal desktop for normal operation, but for a particular function , such as drawing a table, playing VC
D, playing games, etc.

solution: Try to shield the secondary cache (L2) or a cache (L1) in CMOS, to see whether host works; no longer is directly replaced with a good negative CPU. If it works properly after being shielded, it can still be used. Although it is slower, it will save money.

7. Memory problem

If a chip is not completely damaged on the memory stick, it is likely to pass the self-test (mostly POST is set), but it will cause the function due to the large heat generated by the memory. Failed and unexpectedly restarted. Most of the time, when the memory is damaged, the opportunity alarm is issued, but after the memory is damaged, there is no alarm, and the fault that is not powered is still there. It is best to use the exclusion method to quickly identify the fault location.

8. Optical drive problem

If the internal drive is damaged, it will cause the host to start slowly or fail to pass the self-test, or it may restart suddenly during the work. For the latter case, if it happens after we replace the optical drive, it is likely that the power consumption of the optical drive is different. 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, there may be no problem with the use of a certain brand of optical drive, but for other The brand CD-ROM drive can not work, this requires everyone's attention.

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

If the RESET switch is damaged and the internal reed is always in the shorted position, the main unit cannot be powered on. However, when the RESET switch is weakened or the button on the chassis is pressed and it is not easy to bounce, it will appear during use, because the occasional touch of the chassis or under normal use and the host suddenly restarts. Therefore, when the RESET switch cannot be pressed freely, we must check it carefully. It is best to replace the new RESET button switch or apply lubrication to the external button of the chassis.

There is also a situation, because the RESET switch leads in the chassis are too much peeling off during soldering, and the multiple times of unpacking during use will cause the RESET switch line to be too close and cause a collision. , causing the host to automatically restart.

10. Automatically restart when accessing the network card or parallel port, serial port, and USB interface to access external devices

This situation is generally caused by external faults, such as the parallel port of the printer, a short circuit to the ground, and damage to the USB device. Short circuit to ground, NIC work is not standard, etc. When we use these devices, the computer will restart due to a sudden power shortage.

Third, other reasons

1. Poor heat dissipation or cooling temperature failure

CPU failure, the problem often is that the CPU heatsink clamp off, foreign body in contact with the CPU heat sink between the CPU, the CPU prolonged use radiator fan dust Too many of these conditions will cause the CPU to heat up poorly, and the accumulated temperature will be too high to restart automatically. There is

CPU temperature probe following damage or damage to the interior of the temperature measurement circuit P4CPU, BUG BIOS on the motherboard temperature allowed under special conditions, which will cause the host during operation Automatic protective restart. The final step is to protect

CPU temperature we set in the CMOS too low can cause the host to automatically restart.

2.

speed fan failure when the CPU fan speed circuits intermittently damage or breaking line speed, because the motherboard will detect the fan rotation speed mistaken fan stops automatically turn off or restart, but we may check I saw that the CPU fan is turning normally and the speed is normal.

3.

Do not underestimate the magnetic interference of electromagnetic interference, and many times we restart the computer crashes and also because of interference caused by such interference both from the internal chassis CPU fan, chassis fan, graphics card fan, video card, motherboard, hard drive The interference also has interference from external power lines, inverter air conditioners and even large equipment such as automobiles. If our host's interference performance is poor or poorly shielded, there will be an unexpected restart or frequent crash of the host.