1 Is it the motherboard that the computer restarts?

It's a problem with the motherboard and the power supply!

As soon as the power is turned on, the computer will automatically turn on, and there are usually two possibilities:

1. Poor quality of the motherboard or power supply. The boot of the ATX motherboard needs to detect the level signal of one capacitor if the power supply or motherboard is not of good quality.

When the host is connected to the power supply, an instantaneous inrush current will be generated, which may make the power supply mistake for a power signal, resulting in automatic power on as soon as the power is turned on.

2. The BIOS settings of the motherboard are incorrect. In the motherboard BIOS there is a "Power

management

Setup (Power Management Settings)" setting item, in which you can select the status of the computer when the call comes back after an unexpected power failure, which can be divided into automatic power on, keep the power off state, keep the state before power off, and set the automatic power on to off.

There are people who often encounter such problems! It's mainly a matter of CMOS settings!

In fact, this can be said to be a common problem of ATX motherboards, because ATX motherboards need to detect a capacitor when starting up.

Level signals, if there is no guarantee that the first good connection is made when the power is turned on, a moment will be generated.

, which may mistake the power supply for a power signal, resulting in a false start-up. In addition, if in.

In a humid environment, the capacitor discharges faster, and the charging current will be generated at the moment of power supply.

It may also lead to a misboot. Because whether it's plugging in the power plug or pressing the power switch on the power strip.

It is a process of energizing rather than instantaneous, which is easy to make the state of energized unstable. You can try to be direct.

By connecting the power supply to the switch with a pressure spring shrapnel, it can ensure good contact in an instant and a stable energized state.

Sure, you can solve the problem.

There are motherboards that have a function in the BIOS, i.e. in Power

management

setup (power pipe.

configuration).

failstate or ac

lossstate or pwron

afterpw-fail, etc., this function can choose the status of the machine when the power is re-connected after an unexpected power failure, whether it will be automatically turned on or maintained.

The shutdown state is still the state before the power off, please set it to off.

I'll tell you why.

A lot. Try it! First: the CPU is too high! Second, the power supply is not good! Third: the voltage is unstable! Fourth: The memory module is not tight or the memory slot is not good.

Try a different memory slot! If it is 4 several memory.

Try removing a memory module! This will also be the case with motherboards.

But this is the least likely to happen!

Disassemble completely, clean the ash, and reinsert all connectors.

Substitution detection, focusing on memory and power and other expansion cards.

If you still don't find the problem.

That's the motherboard problem.

My board has appeared.

Only the power light is on, the hard disk does not read, and the monitor cannot be lit.

After removing all the parts in the above method, only the board remains.

It is indeed a problem to remove the board and send it for after-sales inspection.

It's fixed!

There are several main reasons:

1. The computer's software causes the computer to restart automatically.

1. Viruses. When a blaster virus attacks, it will indicate that the system will start automatically within 60 seconds.

Trojans. Remotely control all activities of the computer, including restarting the computer.

Solution: Reinstall the computer's system.

2. The files in the system are corrupted.

The system files are corrupted. For example, the kernel 32DLL under Win2K, the font in the Win98 font directory, and other basic files of the system runtime are destroyed, and the system cannot be initialized and forced to restart at startup.

Workaround: Overwrite or reinstall the system.

2. Automatic restart caused by hardware problems of the computer.

1. The power supply of the chassis is insufficient, the DC output is not pure, and the dynamic response is slow.

Users or installed vendors often do not pay attention to the power supply and use cheap power supplies, so it is one of the biggest suspicions that cause the system to automatically restart.

Solution: Replace a high-quality and high-power power supply.

2. Memory.

Poor thermal stability, damaged chips, or incorrect settings.

Memory issues cause the system to reboot to a relatively high chance of rebooting the system.

Solution: Replace the memory.

3. The reset switch on the front panel of the chassis is problematic.

The reset button on the front panel of the case is actually a constant switch, the reset signal on the motherboard is a +5V level signal, connected to the reset switch, and when the switch is off, the +5V level.

Open to the ground, the signal level drops to 0V, triggers the system to restart, and the RESET switch returns to the normally open position, where the RESET signal returns to the +5V level; If the reset key is damaged, the switch is always in the closed position, the reset signal is always 0v, the system cannot perform an electrical check, when the reset switch is less elastic and the button is not easy to press, the switch will easily be turned off by a slight vibration, which will cause the system to reset and restart.

Solution: Replace the reset switch.

The causes tend to focus on incompatible hardware and drivers, problematic software, viruses, etc. Workaround:

1. The cause of the virus. Use PC Manager to disinfect the virus.

2. Reasons for memory. Use an eraser to wipe the gold finger of the memory module and wipe off the oxide layer to ensure that the memory module is installed and running normally.

3. The chassis is not clean. The CPU fan has too much dust to run normally, causing the CPU temperature to be too high, so use a brush or hair dryer to clean up the dust on the inner wall of the case, the CPU fan, the graphics card fan, and the motherboard.