The computer won t start, the fans are all running, and the motherboard won t alarm.

The reason is that the motherboard did not pass the self-test, so it could not boot normally.

The motherboard did not self-test, did not start, and the natural display did not reflect;

The normal thing is that the motherboard should have"Tick"You say that the motherboard does not alarm, which means that there is no problem with your memory, and the memory will not be sent out if it is not plugged in"Tick"the long chirp;

All in all, the problem is with your motherboard, focus on looking at the motherboard.

1.Is there a capacitor burned out.

2.If the battery on the motherboard is depleted, try to replace the battery.

3.If there should be no problem with the hard drive, check if the data cable is in good condition.

You can study more of the above problems, anyway, the main problem is the motherboard.

It won't be a problem with the battery When the battery is finished, it prompts "Press F1 to enter the system".

You said that there is no short sound "beep" that passed the self-test, right, that is, the memory is not plugged in, or the CPU fan is not plugged in. But then you say the fan is working well, that's a memory problem.

In addition, if the graphics card is not bad, it is a long "beep" sound with an alarm sound, which lasts for 2-3 seconds.

1.The CPU and graphics fans are running as usual. Instructions for power supply are OK!

But it also depends on whether your hard drive is running, and if it is also running, probably your machine's power supply is still OK!

2.You can change the monitor to see if there is a turnaround.

Your question is still not exhaustive enough.

I also had such a problem with my computer, and I figured it out after groping a few times, and there was no other problem, but the memory contact was not good. You unplug it and use an eraser to wipe the gold finger, it would be better if there was a special cleaning solution to clean it. You try it.

Since it should be a motherboard or CPU problem, you can find a CPU or motherboard of the same model to test it to find the problem.

Loose memory from it, plug it in from it.

Alas, Hang Seng is out of business, and even the warranty is gone, pity you.

Is the battery running out?

Last time I also encountered something like you, as soon as the host is turned on, you can't enter the screen.

Later, it was enough to change a battery!

It is recommended to change the battery first!

Let's restore the CMOS! There is a jumper near the battery on the motherboard, disconnect the AC power supply first, and the jumper is enough for 1 minute!

This is generally a matter of power supply. Try changing the power supply.

The motherboard is not plugged in properly and the motherboard is not in good contact.

Agree with what was said upstairs. It is recommended to try it with a different motherboard.

The steps are as follows:1Unplug the hard drive, CD-ROM, etc.

All external power stuff is only keyboard CPU motherboard graphics card memory, boot to see if there is a display and remove a sound, by self-testing shows that the problem does not exist in the hardwire optical drive cable mouse port, etc.

2.If it still doesn't show up, unplug the memory and wipe the graphics card, re-test yourself, and see if it still doesn't work, then find someone else to replace the memory or graphics card still doesn't show that the basic motherboard or power supply itself is faulty.

Turn on the fan and turn the motherboard does not alarm, the monitor does not light up, and there is no alarm when you unplug the memory.

Dear, I'm glad to answer for you: Turn on the fan and the motherboard does not alarm The monitor does not light up and unplugs the memory and does not alarm. A:

Dear, (1) CPU problem: The CPU has no power supply: You can use a multimeter to test the three (or one) field tubes and three (or one) rectifier diodes around the CPU to check whether the CPU is damaged. CPU socket has missing pins or looseness:

This type of failure is manifested as a failure to light up or an irregular crash. You need to open the upper cover on the surface of the CPU socket and carefully observe with your eyes if there are any deformed pins. The fan retention clip of the CPU socket is broken:

Consider using other fixing methods, and generally do not replace the CPU socket, because manual soldering is easy to leave a hidden danger of failure. Socket370 CPU, its heat sink is fixed through the CPU socket, if the fixing spring is too tight, you must be careful when disassembling it, otherwise it will cause the plastic clip to break, there is no way to fix the CPU fan. The CPU frequency set in CMOS is incorrect

Just clear the CMOS and it will be solved. Clear the CMOS jumper is generally near the lithium battery of the motherboard, its default position is generally short circuit, as long as it is changed to short circuit for a few seconds to solve the problem, for the old motherboard, if you can't find the jumper, just remove the battery, and then shut down after the boot display enters the CMOS setting, and the battery can also be installed to let the CMOS discharge. (2) There is a problem with the motherboard expansion slot or expansion cardBecause there is a problem with the motherboard expansion slot or expansion card, the motherboard does not respond after inserting the graphics card, sound card and other expansion cards, so there is no display at startup.

For example, brute force disassembling and assembling the AGP graphics card causes the AGP slot to crack, which can cause this type of failure. (3) Memory problems: The motherboard cannot recognize the memory, the memory is damaged, or the memory does not match: some old motherboards are more picky about memory, once the memory that the motherboard cannot recognize is plugged in, the motherboard will not be able to boot, and even some motherboards have no fault prompt (tweet).

In addition, if you plug in different brands and types of memory, it can sometimes cause such failures. Broken needles or cautery in memory slots: Sometimes, due to excessive force or improper installation methods, the reeds in the memory slot will be deformed and broken, resulting in the scrapping of the memory slot.

Note: When plugging and unplugging memory modules, you should apply force vertically and do not shake from side to side. Before unplugging and unplugging the memory module, be sure to unplug the power supply of the host computer to prevent the memory from being charged and burning the memory module when using the STR function.

In addition, do not install the memory backwards, so as not to burn the memory module after powering up. However, the current motherboard generally has a foolproof design and will not be plugged in reverse. (4) The motherboard BIOS is damagedThe motherboard's BIOS stores important hardware data, and the BIOS is also a relatively fragile part of the motherboard, which is very vulnerable to damage, and once damaged, the system will be unable to run.

This is a very serious question.

In the case of a good display link:

1. Do you hear the 'drop' self-test sound?

2. Unplug the signal cable of the monitor, see if the monitor has a display [no signal input on the monitor] 3, do you hear it into the system**?

3. Hear 'drop' and the display is good, no hear into the system**That is: system problem! Reinstall the system.

Motherboard: Brain chassis motherboard, also known as motherboard, systemboard or motherboard; It is divided into two types: commercial motherboards and industrial motherboards. It is installed in the chassis and is one of the most basic and important components of the microcomputer.

The motherboard is generally a rectangular circuit board, on which the main circuit system of the computer is installed, generally there are BIOS chips, IO control chips, key and panel control switch interfaces, indicator plugs, expansion slots, DC power supply connectors of the motherboard and plug-in cards and other components.

The motherboard has an open architecture. Most motherboards have 6-15 expansion slots for PC peripherals to plug in control cards (adapters). By replacing these plug-in cards, the corresponding subsystems of the microcomputer can be partially upgraded, so that manufacturers and users have greater flexibility in configuring models.

In conclusion, the motherboard plays a pivotal role in the entire microcomputer system. It can be said that the type and grade of the motherboard determine the type and grade of the entire microcomputer system. The performance of the motherboard affects the performance of the entire microcomputer system.

The desktop computer boots on the power fan and the case fan does not turn, and the host computer does not start and cannot be turned off.

Hello, the above questions will be answered by me. The desktop computer boots up the power fan and the case fan does not turn, the host does not start, and the base cannot be turned offThis situation may be caused by a variety of reasons, the following are some possible reasons and solutions:1

Power failure: Check whether the power cord is plugged in, whether the power supply is working normally (you can use a multimeter to test whether the voltage is normal), and if the power supply fails, you can replace the power supply. 2.

Motherboard failure: Check whether the power connector on the motherboard is plugged in properly, whether the motherboard is working properly (you can try to use other power supplies for testing), if the motherboard is faulty, you can replace the motherboard. 3.

Memory failure: If the memory module fails, it may cause the computer to not boot properly. You can try to reseat the memory module or replace it with a new one.

4.Graphics card failure: If the graphics card fails, it may cause the computer to fail to boot normally.

You can try reinserting the graphics card or replacing it with a new one. 5.Other hardware failures:

For example, hardware failures such as hard disks and CPUs may also cause the computer to fail to boot normally. You can try to check if other hardware components are working properly, and if there is a fault, you can replace the corresponding hardware components. If you're not sure how to do this, it's a good idea to seek professional technical support or consult a computer repairer.

Hope it helps!

Hello, it is recommended to replace the monitor first. After that, clean the computer thoroughly and replace the motherboard battery.

Possible causes: There are a variety of reasons why your computer won't turn on. Figuring out whether the problem is caused by hardware or software can help resolve the issue.

1. First: Check all cables (including power plugs) to make sure all devices are connected together correctly and tightly.

2. Next, check if the power is turned on. Listen to the sound of the power supply fan to see if the hard drive is working properly. If you don't hear anything, you may need to replace the power supply unit.

To determine this, consider using a power supply test device, such as PC Power and Cooling, to test the power output.

3. If the power supply is normal, but the screen is still dark, try to connect another monitor to the computer (you can borrow one if necessary) to make sure that it is not a problem with the monitor.

Extended information: There are many reasons why the desktop computer host cannot start, and the following fault phenomena and solutions are listed:

1. Fault phenomenon: After booting up, the screen does not have any display, and no "dripping" sound of the motherboard speaker is heard. Failure Analysis: The internal BIOS data of the motherboard COMS chip is CIH virus.

or static electricity and other problems are damaged and damaged, cannot be read, and the system cannot complete the self-test when it starts, so it cannot be started.

Known solution: Contact the motherboard manufacturer to replace the COMS chip with a new one or find the BIOS file provided by the motherboard manufacturer and write it to the burner.

2. Fault phenomenon: After pressing the power button, the optical drive light flashes, the motherboard power prompt light is on, and the power supply is normal, but the screen is not displayed, and there is no "drip" sound.

Fault analysis: This phenomenon occurs after the CUP is damaged, the BIOS first checks the CPU during the self-test process, the CPU is damaged and cannot pass the self-test, and the computer cannot be started.

Known workarounds: Check if the CPU is installed correctly, check if the CPU core is damaged, check if the CPU is damaged using the replacement method, and replace the CPU if it is damaged.

It may be a power supply problem, check the power supply part.

Of course, it has an impact, this is the CPU fan, if it doesn't move, the CPU will often shut down automatically due to high temperatures.

This one is a CPU fan. Sprinkle heat on the CPU. If it doesn't turn, there is a problem with the fan.

Or maybe there's a problem with the connector on the motherboard where the fan plugs it. It is recommended to look for another interface that is the same, and the interface that says "CPU fan" is written. Plug it in.

Or replace a CPU fan. This is important. If the CPU is used for too long and overheated, it can easily cause the computer to restart automatically.

The CPU fan is used to cool down, the CPU will run at a very high temperature after booting, and most computer CPUs will automatically shut down if the temperature is too high, so the fan must rotate normally, of course, I met a very old industrial computer CPU fan a few days ago that does not rotate, but it also makes do with the operation, but the software that runs is simple.

There are many situations, some motherboards have their own temperature control start, and they may start without turning the fan when they are just turned on. After a period of time, the set temperature is reached, and the rotation begins. If you turn on the machine for a long time, it won't turn two cases 1:

Either your area is cold (e.g. minus a few tens of degrees)2: or your fan is broken. Look at the picture you sent is that the fan is broken, the case is so dusty, if the GIGABYTE motherboard does not have a specific temperature setting when it is installed, it will not turn on the fan and will not turn (original Intel fan) Just replace the fan.

Hope it helps

You should use the Inter CPU to boot without a fan, and if you want to run a large program, it will just crash! Or even burn out the CPU or motherboard! It is recommended that you refuel the CPU fan or get a new one!

There are two scenarios.

1. There is a problem with the fan, it is recommended that you put the fan on other normal machines, if it is not normal, it is a fan problem, if it is normal, eliminate the fan problem.

2. If there is a fault in the motherboard circuit, that is, it will not be a hardware problem if it does not rotate due to the inability to supply power to the fan, and it is recommended that you send it for repair.