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Hello everyone, Lin Fei to answer the above questions, what is the main problem of computer automatic restart, many people do not know the reason for computer automatic restart, now let's take a look at it!

The automatic restart of computers for no reason has always been the biggest concern for computer beginners. If they are office workers, their work will be wasted. So what is the reason why the computer restarts automatically? What should we do if the computer restarts automatically? The following introduces the reasons and solutions of computer automatic restart from three aspects.

1. The solution of computer automatic restart of software

1. When the virus "shock wave" virus breaks out, it will also prompt the system to start automatically after 60 seconds. Trojan Horse programs remotely control all the activities of the computer, including restarting the computer. Remove viruses, Trojans, or reinstall the system.

two。 The system file is corrupt. System files are corrupted, such as fonts in the KERNEL32.DLL,Win98 FONTS directory under Win2K, and other basic files when the system is running. When the system starts, it will be forced to restart because it cannot be initialized.

Solution: overwrite the installation or reinstall.

3. Timing software or mission planning software works. If you restart or load some working programs in the Planning Taskbar, the computer will restart at that time. In this case, we can open the "start" item, check whether there are unfamiliar execution files or other scheduled working procedures, and then block it before starting the check. Of course, we can also enter the "Msconfig" command directly in run to select the startup item.

Second, the hardware solution of computer automatic restart

1. Chassis power is insufficient, DC output is not pure, dynamic response is slow. Or users and installers often do not pay attention to the power supply and use cheap power supply, so the system will restart automatically is one of the biggest suspects.

The output power of the power supply is insufficient. Running large 3D games and other software that take up a lot of CPU resources, when CPU needs high power supply, power overload will cause power protection and stop output. After the power output stops, the load is reduced and the power supply starts again. Because the protection / recovery time is very short, the performance given to us is that the host restarts automatically.

Power supply DC output is not pure, digital circuit requires pure DC power supply. When the harmonic content in the DC output of the power supply is too large, it will lead to the working error of the digital circuit, such as frequent panic or restart.

The workload of CPU is dynamic, and the demand for current is also dynamic, which requires dynamic response speed. Some poor quality power supplies have a long dynamic response time, which can also lead to frequent crashes or restarts.

Update the device (high-end video card / large hard drive / video card) and add the device (burner / hard drive). If the power exceeds the rated output power of the original power supply, it will lead to frequent panic or restart.

Solution: now replace the high-quality and high-power computer power supply.

two。 The probability of system restart caused by poor thermal stability of memory, chip damage or memory setting error is relatively high.

The thermal stability of the memory is poor, and the boot can work normally. When the memory temperature rises to a certain temperature, it will not work properly, resulting in a crash or restart.

When the memory bar is slightly damaged, it can be started by self-test (setting Quick start to not fully detect memory), or you can enter the normal desktop to run normally. It will restart or crash when running some software with high Imax O throughput (media playback, games, graphic / 3D drawing).

Solution: replace the memory.

Setting the CAS value of the memory too low will also cause the memory to be unstable and the system will restart automatically. It is generally best to use the default settings of BIOS and do not change them yourself.

3.CPU temperature is too high or cache corruption

Excessive CPU temperatures often cause protective automatic restarts. The reason for the high temperature is basically due to the poor heat dissipation of the chassis and CPU. The reasons for poor heat dissipation of CPU include: low thermal conductivity of radiator material, foreign body between radiator and CPU contact surface (mostly warranty paste), low fan speed, excessive dust accumulation between fan and radiator, and so on. In addition, the temperature probe under the P2/P3 motherboard CPU is damaged or the temperature measurement circuit inside the P4 CPU is damaged. The BIOS on the motherboard has a BUG, which can not measure the temperature in special cases. The CPU protection temperature set in CMOS is too low, which will also cause prote.

Primary and secondary cache corruption in CPU is a common fault of CPU. If the damage is minor, it can still be activated. You can enter the ordinary desktop for normal operation. It will restart or crash when running some software with high Imax O throughput (media playback, games, graphic / 3D drawing).

Solution: mask the L2 or L1 cache in CMOS, or replace the CPU.

4. Automatic restart caused by 4. AGP graphics card and PCI card (network card, cat)

The workmanship of the external card is not standard or the quality is not good, which leads to the misoperation of the AGP/PCI bus reset signal and the system restart.

There are cases where the video card and network card are loose and the system is rebooted.

5. When parallel ports, serial ports, and USB interfaces are connected to faulty or incompatible external devices, they automatically restart.

Peripheral failure or incompatibility, such as printer parallel port damage, pin-to-ground short circuit, USB equipment damage to ground short circuit, pin definition and signal level incompatibility, etc.

The external device jitters too much when it is hot-swapped, causing the signal or power supply to be short-circuited instantly.

6. The internal circuit or chip of the optical drive is damaged, and the optical drive is damaged. Most of the performance is that the CD cannot be read / written. In addition, the mainframe suddenly restarts due to damage to the internal circuit or chip in the course of work. The optical drive itself is poorly designed, and FireWare has Bug. It also causes a restart when reading CD.

7. The reset switch on the front panel of the chassis is actually a normally open switch, and the reset signal on the motherboard is a 5V signal.

8. It is rare for the motherboard to restart automatically due to motherboard failure. Generally speaking, the circuit related to RESET is faulty; sockets and slots have virtual welding and poor contact; individual chips, capacitors and other components are damaged.

Solutions to other causes of automatic restart of the computer

1. Voltage instability of city power

The operating voltage range of the switching power supply of the ① computer is generally 170V-240V. When the power supply voltage is lower than 170V, the computer will restart or shut down automatically.

Solution: add a voltage regulator (not UPS) or a 130-260V wide switching power supply.

If ② computers share a plug board with high-power appliances such as air conditioners and refrigerators, the voltage supplied to the computer will be greatly affected when these appliances are started, which is often shown as a system restart.

The solution is to separate their supply lines.

two。 Strong magnetic interference do not underestimate electromagnetic interference, many times our computer crash and restart is also caused by interference, these interference not only from the chassis internal CPU fan, chassis fan, graphics card fan, graphics card, motherboard, hard disk interference, but also from external power lines, frequency conversion air conditioning and even automobiles and other large equipment interference. If the interference performance of our host is poor or shielding is poor, the host will restart accidentally or crash frequently.

3. The AC power supply line is connected incorrectly. some users ground the zero wire of the power supply line directly (not the zero wire of the watt-hour meter), which leads to automatic restart because of the introduction of interference signal from the ground wire.

4. The quality of the plug-in or power outlet is poor and the contact is poor. After the power socket has been used for a period of time, the elasticity of the Reed is slowly lost, resulting in poor contact between the plug and the Reed, the resistance is constantly changing, and the current fluctuates with it, and the system will naturally be very unstable. Once the current does not meet the minimum requirements for the operation of the system, the computer restarts. The solution is to buy good sockets of good quality.

5. Too much dust causes the motherboard RESET line to be short-circuited and automatically restarts.

IV. Solution to automatic restart after computer shutdown in WIN7 system

After the computer is turned off, it does not turn off, but restarts, resulting in the inability to shut down, especially in the WIN7 system. Here I will talk about how to solve this problem:

Symptom of failure: the computer is turned off in the Windows 7 system, but the system restarts automatically, which makes it impossible to shut down in the operating system and can only be forced to merge.

Fault analysis: the cause of this failure may be due to the wrong setting of the operating system, or the application of some software, the modification of the settings of the Windows 7 system, and the virus.

Methods and steps

Click the start button and select the Control Panel menu command from the pop-up start menu. Pop-up [control panel]

Window, click the Category button, and select the large Icon menu command in the pop-up drop-down menu.

Click the system link in the pop-up window, pop up the system dialog box, and click the Advanced system Settings link.

Pop up the system Properties dialog box, select the Advanced tab, and click the Settings button in the Startup and recovery column.

In the pop-up Startup and recovery window, select the automatic restart check box in the system failure column, and click the OK button. Restart the computer to troubleshoot.

Note:

1. Operate the computer correctly at ordinary times.

2. Some software with unknown origin or unknown knowledge should be used with caution.

The above is about the computer automatic restart is the reason for the relevant content, I hope it can be helpful to everyone!

At the end of this article, I hope it will be helpful to you.

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