Troubleshooting of automatic computer reboot and Shutdown (4) -- Review in some places

Computer Auto-restart and auto-Shutdown failures often occur, seriously affecting normal operations. Here, we analyze common fault phenomena and provide effective solutions to help you solve such annoying problems.

 

I. Software causes that cannot be ignored

 

● The Startup Program of win200 and WINXP is incorrect and then automatically restarted, but the system still cannot be started after multiple restarts.

 

Fault Analysis: In the default settings of Win2000 and WINXP, if an error occurs during the startup process, the system restarts again to reload the program. If the program has serious problems, it will cause repeated restart.

 

Known solutions: press F8 at startup -- select "security mode" -- go to "Control Panel"> "system"> "advanced" in the system -- select "Start and fault recovery ", finally, remove the check box before "Automatic Restart" under "system failure.

 

Ii. Hardware problems

 

● Power Supply

 

Fault description: The system has an optical drive and a burner. When two devices work at the same time, the system often restarts automatically.

Fault Analysis: although the nominal maximum power of some power supply can reach 300 W, the actual power is greatly reduced. In addition, the current power consumption of computer hardware is large, when there are too many accessories installed in the computer, the output current of this type of power supply fluctuates greatly, resulting in system restart.

Known solution: replace the power supply with excellent quality.

 

● Memory

 

Fault description: The system uses the memory in bulk and usually works normally. However, it often restarts automatically when running large 3D games.

 

Fault analysis: the quality of the memory is too high and the system restarts automatically. At present, many mainboards support dual-channel memory. If the quality and nature of the two memories are different, the system may be unstable. When the system runs large and the program fails, the fault is particularly prominent.

 

Known solution: You can try to set the memory Cl value to 3 or 3.5 in the bios, and appropriately reduce the system FSB bus frequency. If the memory works in dual-channel mode, it is best to choose products of the same brand at the same speed to ensure stable system operation.

 

● Chassis power button and reset button

 

Fault description: The computer is automatically shut down or restarted from time to time. You need to press power multiple times. Reset button or pat the chassis panel gently.

 

Fault Analysis: This is a hidden fault and requires a lot of time to check. However, such faults are often found on computers that have been in use for a long time. It is usually because the button Reed is elastic or there is too much dirt between the button and the chassis panel, resulting in abnormal button position, so that the automatic shutdown or restart from time to time.

 

Known solution: When buttons cannot be properly restored, you can consider replacing the button component or cleaning the dirt between the button and the chassis panel with alcohol.

 

Iii. Influence of other factors

 

● Incorrect motherboard BIOS settings

 

Fault description: the system automatically shuts down after running a large software program for about 10 minutes. It is initially suspected that the CPU temperature is too high, but the CPU temperature tested by the software is still within the normal range.

 

Fault Analysis: Many mainboards now have built-in control chips that can automatically monitor CPU temperature and shut down when the temperature is too high. However, if you set the BIOS warning temperature value to automatically shut down.

 

Known solution: Go to BIOS settings and increase the "shutdown temperature" value in the "PC health" project.

------------------------------------ Computer automatic restart, shutdown troubleshooting http://www.jota.com.cn/page.asp? Id = 625