How to solve the system automatic restart several major reasons

1. Insufficient power or poor performance of the computer power supply

This is also more common, especially when we add a new device to our host, such as the replacement of the high-end graphics card, the addition of a recorder, after adding a hard drive, it is easy to appear. When the host is working at full speed, such as running a large 3D game, high-speed burning or ready to read the CD-ROM, just start, the dual-drive to copy data, it may be due to short-run power supply power protection and stop the output, but because when the power stop output, the load is reduced, then power is started again. Because the recovery time after protection is very short, so the performance is the host automatic restart.

There is also a situation, the host switching power supply performance is poor, although the voltage is stable and within the normal allowable range, but because of its output power in the harmonic content is too large, it will cause the host to crash or restart frequently. In this case we use a multimeter to test its voltage is normal, it is best to replace an excellent power supply to replace the exclusion.

Solution: Now for high-quality high-power computer power.

2. Main switch power mains plug loose, poor contact, no plug

In this case, most will appear on the DIY machine, the host power supply cable is not 3C certified, and the power outlet does not match. When we shake the table or touch the host computer will be automatically restarted, usually accompanied by a slight electric spark "PA" sound.

Workaround: Replace the high-quality 3C certified power cord.

3. Motherboard Power ATX20 Socket has a false solder, poor contact

This fault is not common, but it does exist, mainly in the host when the normal operation, left and right to move the ATX20 pin plug, see if the host will automatically restart. At the same time also check the 20-pin power plug internal reed whether there is oxidation phenomenon, it is also easy to lead to large contact resistance, poor contact, causing the host to panic or restart. Sometimes you need to check the 20-pin plug at the end of the cable, whether it is reliable.

Workaround:

① if the motherboard welding point of the virtual welding, directly with a soldering iron repair can be. Note: In the motherboard, hard disk, video card and other computer board welding, must be good grounding the iron, or in the welding unplug the power plug.

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

4.CPU problem

The internal part of the CPU function circuit is damaged, the level two cache damage, the computer can also start, and even go to normal operation of the desktop, but when a special function will be restarted or panic, such as drawing tables, playing VCD, playing games and so on.

Workaround: Try blocking the two-level cache (L2) or first-level cache (L1) in the CMOS to see if the host is functioning properly, or simply replacing it with a good CPU. If the shielding can be normal operation, or can make use of, although slower, but must save money.

5. Memory Issues

If a chip is not completely damaged on the memory strip, it is likely that it will pass the self test (the post is mostly set), but it will be restarted unexpectedly at run time because of the high heat of the memory and the failure of the function. Most of the time when memory corruption open the opportunity to alarm, but the memory is damaged after the alarm, no power failure is still there. It is best to use the elimination method to quickly determine the fault location.

Software

1. Virus destruction

Computer viruses have come into being since the computers were available. When the network becomes the information artery of today's society, the virus spreads more conveniently, so it also interferes and destroys our normal work from time to time. More typical is a period of time on the global computer caused serious damage to the "Shockwave" virus, the attack will also prompt the system will automatically start after 60 seconds. In fact, early in the DOS era there are many viruses can automatically restart your computer.

For virus damage, we can use the latest version of anti-virus software to disinfect, generally found that the virus exists. Of course, there is also the possibility that when you go online, you have been maliciously hacked into your computer, and placed a Trojan horse program. This way the other side can remotely control all of your computer's activities, and of course include getting your computer to restart. For some Trojans, it is not easy to clear, it is best to reinstall the operating system.

2. System file corruption

When the system files are destroyed, such as the font under the Kernel32.dll,win98fonts directory under Win2K, etc., the basic files are corrupted when the system is running, and the system will not be able to complete the initialization and force the restart when it starts. You can do a test, the WIN98 directory of the Font "FONTS" renamed to try. When you turn it on again, our computer will start repeatedly.

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

3. Timing software or scheduled task software works

If you set up a restart or load some work program in the schedule taskbar, the computer will start again when the timer arrives. In this case, we can open the "Start" Item, check if there is no familiar with the execution of files or other scheduled work program, shield it after the boot check. Of course, we can also enter the "Msconfig" command directly in "Run" to select the startup item.

Hardware

1. Mains voltage instability

General home computer switching power supply operating voltage range of 170v-240v, when the mains voltage is less than 170V, the computer will automatically restart or shutdown. Because the fluctuation of the mains voltage is sometimes not felt, we mistakenly think that the computer is automatically restarted.

Solution: For frequent power supply instability in the region, we can purchase UPS power supply or 130-260v wide switching power supply to ensure that the computer stable operation.

2. Poor quality of plug-in or power outlet, poor contact

Most of the market power is not good, the internal contact is the use of manual welding, and often use acidic flux, which is easy to lead to in the later use in the welding point of oxidation caused by a circuit breaker or wire leakage between 0 lines. Because of the manual welding, at the same time because of the use of phosphorus brass sheet elasticity is poor, it will not be easy to lose flexibility for a long time, resulting in poor contact with the host or the power plug of the monitor to produce a large contact resistance, in a long period of time will be a large number of heat caused by the virtual connection, this will be displayed as

There may be a wall socket used in our home, most of the wall socket installation is not the use of professionals, so the internal wiring of the socket is very nonstandard, especially these sockets if we often use high-power electric heater when it is easy to cause internal heating oxidation virtual connection and the formation of intermittent power outages, Causes a computer restart or a display blink.

Workaround:

① do not plan to save money and buy cheap not the beauty of the power of the plug, buy some famous brand power plug, because the internal machine is automatically installed crimping, not using manual welding.

② for the wall socket internal virtual connection problem, we can change the host to a wall socket to try to see if there is the same automatic restart problem.

8. Optical drive problem

If the optical drive is damaged internally, it can also cause the host to start slowly or fail the self-test, or it may suddenly restart during operation. In the latter case, if we replace the optical drive after the appearance, it is likely that the optical drive power consumption caused by different. What you need to understand is that although the ATPI interface of the optical drive is the same, but different manufacturers of the PIN definition is not the same, if we have a problem with the hard drive line, it may produce a certain brand light driven with no problem, but for other brands of optical drive can not work, this requires attention.

9.RESET Key Quality problem

If the reset switch is damaged and the internal reed is always in a short position, the host will not be able to power on self-test. However, when the reset switch becomes less elastic or the button on the chassis is not easily bounced, it will appear in use, as the occasional touch of the chassis or in the normal use state and the host suddenly restarts. Therefore, when the reset switch cannot be moved freely, we must check carefully, it is best to replace the new reset button switch or the external button to lubricate the chassis.

There is also a situation, because the reset switch lead in the chassis in the welding insulation layer stripping too much, coupled with the use of multiple unpacking in the process will cause the reset switch line distance too close to cause a collision, causing the host to automatically restart.

10. Automatic restart when connecting to external device via network card or serial port, USB interface

This situation is generally due to peripheral failure, such as the printer's port damage, a short-to-ground, a USB device damage to the ground short-circuit, network card workmanship is not standard, and when we use these devices, will be due to sudden short-circuit power supply caused by computer restart.

Other reasons

1. Poor heat dissipation or temperature failure

CPU heat dissipation, often the problem is that the CPU heatsink fixed clip off, CPU heatsink and CPU contact between the foreign bodies, CPU fan after a long period of use of the radiator dust too much, these conditions will lead to poor CPU cooling, accumulation temperature is too high and automatic restart.

There is the CPU under the temperature probe damaged or p4cpu internal temperature measurement circuit damage, the motherboard BIOS has a bug in a special condition of the temperature is not allowed, which will cause the host in the process of automatic protection restart.

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

2. Fan speed failure

When the CPU fan's speed circuit is damaged or the speed line intermittent circuit breaker, because the motherboard can not detect the fan speed will be mistaken for the fan to turn off or restart automatically, but we check the CPU fan may see the rotation is normal, and the speed is normal.

3. Strong magnetic interference

Do not underestimate the electromagnetic interference, many times our computer crashes and restarts are caused by interference, both from the internal chassis CPU fan, chassis fan, video card fan, video card, motherboard, hard disk interference, but also from the external power lines, inverter air conditioning and even large equipment such as automobiles interference. If our host's interference performance is poor or poor shielding, there will be unexpected restart of the host or the phenomenon of frequent crashes