Urgently, about pressing the computer boot button, the computer does not respond, there is no sound,

Try the power supply first, unplug the power supply from the motherboard, power it on, and then take an iron wire to connect the black wire and the green wire to see if the fan is rotating, if not, change the power supply.

If the power supply is normal, there is a possibility that the power supply of the motherboard is partially faulty, so take it for repair.

Of course, the best and most fantastic thing is that the power switch in your case is broken :)

It is recommended to unplug the power cord at the back of the computer before plugging it in!

The one on the first floor is so talented!!

A master of computer repair, you know all this thing.

Generally, when the power supply starts, it is necessary to give the motherboard an impulse voltage. If you use the computer, you accidentally appear "stuck", "self-off" and other crash symptoms, it is easy to have this problem. The capacitors on the power supply are working malfunctionally.

Depressed, you haven't solved your computer problem yet? Have you dismantled everything? If it weren't for the poor contact, most of the hardware was broken, you said that there was no problem with the hardware, it should be wrong, I can guarantee that it was the hardware strike Oh, you see if the memory and graphics card gold finger have been oxidized, but the computer will be oxidized for a long time, if there is, you will often have this situation, you can use a rubber to remove the oxide layer, if it doesn't work, you don't have to toss, or take it to repair???

Check whether the power cord of the host is plugged in, whether the power socket can be used normally, replace the power cord of the host, if it is not these problems, check whether the switch on the front panel of the host is normal, you can unplug the switch between the front panel of the chassis and the motherboard, short the jumper to see if it can be turned on, if you still can't find the problem, then replace the host power supply.

When you plug the power cord into the case, listen carefully for any electrical sound.

If the power supply is fine, you can also look at the power supply, find a paper clip, and find the front four and four back four short circuits in the power port of the motherboard to see the fan turn. If it turns, the power supply is fine. That's the problem of looking at the motherboard!

Two sockets for the word power can be found. It is the place where the boot button of the chassis is plugged in, looking for a short circuit in a metal thing, or looking for a multimeter to measure the voltage.

There is no response when you turn on the computer, and the first possibility is that the computer power supply is broken. You can try it with a different computer power supply. It may also be that there is a problem with the motherboard, such as poor contact of the graphics card, you can unplug the graphics card and try it.

If it doesn't turn on, it's either a power supply issue or a motherboard issue. You can first short connect two of the 24 pins of the power supply (specifically) to see if it is turned on, and it is a problem for the motherboard to be able to turn it on.

Based on your knowledge of the computer, I can only say that you are not plugged in or the computer is broken, send it for repair.

If you don't want to send it for repair, you can buy a motherboard diagnostic card with an instruction manual to assist in diagnosis.

Check that all wiring is connected correctly? Check that all hardware is properly connected? Is the hardware normal? You focus on checking whether the power supply and motherboard are normal. Because if the power supply is good, the wiring is fine, the power button is normal, and how many fans will be pressed or something.

Reason 1: The power supply is broken.

Cause 2: The cable is loose.

Reason 3: Motherboard problems. The solution is as follows:

1. Power detection, unplug the widest cable plugged into the motherboard. (It is a cable output from the power supply) 2. Use a paper clip to short circuit the green and black wires, if the power supply fan is working, then the power supply is good, if it is not working, this is a power supply problem.

3. Open the main chassis, unplug the jumper between the switch and the motherboard, short-circuit it, and observe whether it is started.

4. Replug the power supply into the motherboard, and try to turn it on.

5. If the problem cannot be solved, it is recommended to take the computer to a computer repair shop for maintenance.

The reasons why a computer won't boot are complex and can be summarized into two categories: hardware reasons and system reasons. Under normal circumstances, if you can't pass the self-test, it's the hardware; It is the system that can pass the self-test.

Restart Sometimes the computer system can't be started after booting is just an occasional phenomenon, maybe it is not fully booted up at that time or individual components are not loaded to start the computer, then you only need to restart the computer.

After the computer is turned on, press F8 to open the boot menu, this method is a measure after the computer fails to boot, after opening the boot menu, there are safe mode, the latest correct configuration and other options.

The main reason for going directly to the BIOS when booting up is that there is a problem with the settings of the host BIOS. Some computer motherboards are set up to be more user-friendly, so many other functions have been added. When the BIOS is not set up correctly, restarting the computer will automatically enter the BIOS.

If there is no response after pressing the power button, it means that there is no power, so it is possible that the external power supply is out of power, it is possible that the power switch is damaged, or there may be a problem with the computer power supply.

Restart the computer and press F8 to enter safe mode, delete the graphics card driver in the control panel of safe mode: then restart the system normally, reinstall the graphics card driver or change to another version of the graphics card driver.

The computer can't enter the system when it is turned on, it is generally stuck in the welcome interface and has been spinning, and the forced restart of the computer is still the same, this situation may be a problem with the driver installation, or there is a conflict in the program that starts at boot, and the Trojan virus may appear like this.

In terms of hardware, it is necessary to observe whether the hardware is installed properly, whether it is loose, deformed or broken. These conditions can cause your computer to shut down, especially if you pay attention to the graphics card and memory module.

Summary. If the computer presses the boot button and does not respond, and it can't be turned on, you can check it according to the following methods:

One is to check the power supply line to the computer, check whether there is damage, you can replace the normal power cord or socket for testing, or replug and replace the socket test, check all the power supply-related interfaces, whether there is a problem of poor contact, check the parts including the power supply socket, power cord, host power interface, etc.

Second, if the external power supply is normal, it means that there is a problem inside the host, and the computer does not respond at all when you press the boot button, which may be the power button is damaged, the power supply is damaged, and the motherboard is damaged. These need to be checked and repaired by experienced personnel, such as replacing the normal host power supply to test whether the power supply is broken.

What is the reason why the computer does not respond when I press the power button (it can't be turned on)? (Detailed explanation) the computer pressed the boot button does not respond, can not be turned on, you can check according to the following methods: one is to check the power supply to the computer, check whether there is damage, you can replace the normal power cord or socket for testing, or re-plug and replace the socket test, check all the power related interfaces, whether there is a problem of poor contact, check the parts including power supply socket, power cord, host power interface, etc.

Second, if the external power supply is normal, it means that there is a problem inside the host, and the computer does not respond at all when you press the boot button, which may be the power button is damaged, the power supply is damaged, and the motherboard is damaged. These need to be checked and repaired by experienced personnel, such as replacing the normal host power supply to test whether the power supply is broken.

Hope it helps.

Step 1: Check the wire connection between the socket and the computer to ensure that both ends are not loose and the circuit is unblocked.

Step 2: If there is still no response when you press the power button again, first check whether there is a problem with the contact between the power button and the motherboard, you can unplug the switch wire from the motherboard, and try to lap it with a screwdriver, if it can be started, the switch is broken or in poor contact.

Step 3: If the lap also doesn't boot, prove that the motherboard is not powered on. Check whether the plug connecting the power supply (the square box connected to the wires in the case) and the motherboard is loose, and try to plug them all in.

Some computers have a fuse (a small glass tube) to see if it burns. If it doesn't work, it may be that the power supply is broken, and there must be an electricity meter to measure it.

The worst case may be that the motherboard is broken, and you will need to spend money to replace the motherboard.