Computer power-on automatic Power off solution Summary

Computer power-on automatic power off problem

1, check the motherboard on the capacitor is not a bulge phenomenon, if there is, you need to replace the capacitor.
2, if not, it is estimated that your computer power output power is not enough. Computer shutdown after a period of time, startup difficulties or startup process freezes, automatic restart, or part of the hardware can not be loaded normally, the main problem is the host power supply, the output voltage of the power supply is not enough, the computer boot when the power consumption caused by voltage drop, resulting in the computer can not start normally Since the previous boot has been to the hardware has been a certain charge, with a small amount of electricity can be started normally.
You test that if your computer has hardware such as an optical drive, floppy drive, or burner, you disconnect the power from them, which reduces power. See if you can start normally. If you can, just change the power.

Computer power-on automatic Power off problem 1:
　　
The specific situation is like this: turn on the power switch, press the power-on button, the fan turned, the machine has movement, after a power outage, the fan does not move, the light is not bright, and then press the key is useless. The power is turned on, after a while, reboot and repeat the above situation. And I dial the hard drive power, can boot to detect the hard drive without this step. Then the optical drive power to clean up, in a burst of Hu, you can turn on the normal function one day (no longer do not shut down the machine). Excuse me, I don't want to do this every day, how can i solve this problem?
　　
A: This type of automatic power off after the situation is likely to be a power supply or motherboard failure. Fault causes are diverse, such as IC chip, capacitor burned, a circuit problems, such as, in general, such a failure of the individual is not able to repair, recommend the repair or replacement of related accessories, it is recommended to first try to replace the power supply. In addition, the power supply quality problems (such as low voltage, abnormal fluctuation, etc.), may also cause this power off the fault phenomenon.
Power off failure may also be caused by the following reasons: First, the chassis power switch problems, such as reset spring failure, the second is the C p u for overclocking, or C p u fan problems. Third, the optical drive and other accessories have short circuit fault.
　　
computer power-on automatic power off problem 2:
　　
The computer turns off automatically after 10 seconds after booting. CPU and so on has cleaned up the power should be no problem because before using another computer hardware test can be normal boot, excuse me what is this situation?
A: The CPU temperature may be high, it is recommended to change the fan and silicone computer power-on automatic power off problem 3:
　　
My computer's been on the power outage a lot lately and I don't know what's going on.
It's been a long time, and the temperature has dropped.
I have to reboot 3 times, it must be 3 times.
Don't tell me it's a resistor, don't say it's a power supply, and a voltage
I bought a new computer for a few days.
Don't say I went to the computer city to fix it because I bought it in the field.
My configuration is
CPU Intel q8200
Motherboard Soyo p45d3 Neo-f
Memory DDR3 1333
Graphics Card gtx260+ Edition (Shadow Chi)
HDD Seagate 1TB
Power supply TT Kong KK550A

Other reasons

① if it is the motherboard solder point virtual welding, directly with the soldering iron can be. Note: In the motherboard, hard disk, graphics cards and other computer board welding, must be good grounding soldering iron, or unplug the power plug when welding.

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

6. CPU Issues

CPU internal part of the functional circuit damage, two cache damage, the computer can also start, and even into the normal desktop for normal operation, but when carrying out a special function will restart or panic, such as drawing table, play VCD, play games and so on.

Solution: Try to screen the two level cache (L2) or the first level cache (L1) in the CMOS, see whether the host can run normally, or simply use a good CPU to replace the elimination. If the screen can be normal operation, or can make do with the use, although the speed is slower, but will be able to save money.

7. Memory issues

If a chip is not completely damaged on the memory bar, it is likely to pass the self-test (most of which will have a post), but at run time will be due to the high memory value caused by the failure of the function and unexpectedly restart. Most of the time when memory corruption, open the opportunity to alarm, but the memory is not damaged after the alarm, no power failure is still available. It is best to use the elimination method to quickly determine the fault area.

8. Optical drive problem

If the optical drive is damaged internally, it can also cause the host to start slow or not to pass the self-test, or it may be suddenly restarted during work. For the latter case, if we have replaced the optical drive, it is likely that the power consumption of the optical drive is different. What you need to know is that although the ATPI interface of the optical drive is the same, but the different manufacturer's PIN definition is not the same, if we have a problem with the hard drive line, it may produce for a certain brand light driven with no problem, but the other brand optical drive can not work, which requires attention.

9. There is a problem with the Reset key quality

If the reset switch is damaged and the internal reed is always in the short position, the host will not be able to power up the self-test. However, when the reset switch is less flexible or the button on the chassis is not easy to bounce, it appears in use because of occasional touch of the chassis or a sudden reboot of the host in the normal use state. Therefore, when the reset switch can not be moved freely, we must carefully check, it is best to replace the new reset button switch or the external button of the chassis lubrication treatment.

There is also a situation, because the reset switch leads in the chassis in the welding insulation layer peeling too much, plus the use of the process of multiple unpacking will cause the reset switch line too close to cause collisions, resulting in automatic restart of the host.

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

This situation is generally due to peripherals have faults, such as the printer's mouth damage, a foot to the ground short-circuit, USB equipment damage to the ground short circuit, the network card workmanship is not standard, when we use these devices, will be due to a sudden power short circuit and cause the computer restart.

1. Poor heat dissipation or temperature failure

CPU heat is not good, often the problem is the CPU heatsink fixed clamp off, CPU heat sink and CPU contact between a foreign body, CPU fan after a long time to use the radiator dust too much, these conditions will lead to poor CPU heat, excessive accumulation of temperature and automatic restart.

There is the CPU below the temperature sensor damage or P4 CPU internal temperature measurement circuit damage, the motherboard on the BIOS bug in a special condition temperature is not allowed, these will cause the host in the process of automatic protection restart.

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

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 fan stop switch to automatic shutdown or restart, but we check may see the CPU fan rotation normal, and the speed is normal.

3. Strong magnetic interference

Do not underestimate electromagnetic interference, many times our computer crashes and reboots due to interference, both from the internal chassis CPU fans, chassis fans, graphics fans, graphics cards, motherboards, hard disk interference, but also from the external power line, inverter air-conditioning and even large equipment such as automobiles interference. If our host interference performance or poor shielding, there will be a host of accidental restart or frequent crash of the phenomenon