The motherboard failure is the main reason why the laptop cannot be turned on. It is often caused by factors such as liquid intrusion into the laptop, damage to the motherboard itself, or component damage to the motherboard itself.
Mainboard problem, if there is no problem with the above two, then the possibility of motherboard failure is relatively high. First, check whether the connection between the motherboard and the power-on button is loose, and whether the switch is normal. You can try shorting the switch with a wire. If it doesn't work, you can only try replacing a motherboard.
Possible reasons are as follows: motherboard failure, memory failure. If there are two memory sticks, it is recommended to unplug one memory and keep one memory for booting. If it does not work, replace the other memory separately and try to boot the test. If it's a motherboard problem, it's recommended to send it in for repair, as you can't fix it yourself.
If you encounter a situation where your laptop cannot be turned on (cannot be turned on without turning it on), the problem may be caused by static electricity on the motherboard. For this situation, follow the steps below. (1) Please plug and unplug the adapter and battery.
) Does not turn on: One of the common symptoms of a broken motherboard is that the device does not turn on. However, there are also some reports that the computer will not turn on, but many times if it does not turn on when pressing the power button, it is most likely that the motherboard is broken. 2) Unauthorized crash or power outage: If the device suddenly crashes or loses power during use, the motherboard may be faulty.
There are many situations that cause the computer to fail to open. The following are common problems, troubleshooting ideas and solutions for reference only. No response when pressing the power button.
1. There may be many reasons why the computer host is powered on but the lights are on but cannot be started. The following are some possible reasons: Power supply problem: The power supply may not provide enough power. electricity to start the computer. This could be caused by a power failure, power line failure, or power overload.
2. Reasons why the machine cannot be turned on: 1. Memory problem: it doesn’t work in any slot, nor does it work on other machines. You can only replace the memory. The buzzer usually makes an abnormal sound. 2. Compatibility issues: Other machines can be used, but this one cannot. Or a single stick can be used separately, but two sticks cannot be used.
3. First, remove the power supply from the computer host, plug in the power adapter and see if it can be turned on. Maybe the power supply is broken and the power is not enough to carry the machine. Just replace the power supply. It may be that the power supply module on the motherboard is broken.
4. The main reason why the computer host suddenly cannot turn on the machine is because the host is often moved and the power interface on the back of the host is in poor contact, so that when the host is turned on, it cannot be powered on normally, resulting in the host being unable to turn on. Solution: Re-fix the power interface on the back of the host and try to turn it on.
5. Install the battery, restart the computer and you will find that the computer can start normally. Other solutions If you still can't boot after following the above method, it means there is a problem with the memory. Don't worry, it's just a few simple steps. Open the case, find the memory module and remove it.
6. The computer cannot be turned on, and there is no response when pressing the power switch. There are several possibilities for this situation: the power cord is loose, or the power strip is loose, or the strip is not powered on. The host power supply is broken. The computer's motherboard is broken. The switch button on the main unit is broken, or the button is stuck.
The computer cannot be turned on, but the display light is not on. The host can be turned on, the fan is spinning, and the keyboard and mouse are not working. Bright. What should be the cause is poor hardware contact.
Fault phenomenon: After turning on the power and pressing the power button, there is no movement from the computer. Checking ideas and methods: It may be a power supply problem. Please check whether the power socket and power cord are normal.
The graphics card fan is damaged, causing the graphics card to overheat and stop working. This is a self-protection mechanism to prevent the chip from burning. In this case, please shut down the computer immediately and replace the fan of the graphics card, which should return to normal.
The reasons why the fan turns on but the monitor does not respond when the computer is turned on are: monitor connection problems, graphics card problems, memory problems, power supply problems, and motherboard problems. Monitor connection problems The first thing to check is whether the connection between the monitor and the computer is normal.
When the computer turns on and the screen goes black but the fan spins, it is usually caused by poor connections in hardware such as monitor cables and memory. You can disassemble the computer to check each component, remove dust and reinstall it.
1. There is something wrong with the power button itself. As a result, the power supply contact is poor, so there is no response when pressed. This reason is very common, and the solution is to decisively replace the host button, or replace the button connection cables of the power button and reset button. There is a problem with the filter capacitor of the host power supply.
2. First, remove the power supply from the computer host, plug in the power adapter and see if it can be turned on. Maybe the power supply is broken and the power is not enough to carry the machine. Just replace the power supply. It may be that the power supply module on the motherboard is broken.
3. Open the side panel of the host chassis. Re-insert the memory, graphics card, hard disk data cable, hard disk power cable, motherboard 20P power supply cable, and CPU power supply cable. Turn on the computer and see if it lights up. If it doesn't light up, you need to replace the hardware to solve the problem.
1: The computer power supply cannot be started after short-circuiting the switch pins.: If the computer boots up after short-circuiting the switch pins, it is a problem with the power switch in the main chassis (switch wire Damaged or broken switch): If the computer still won't turn on after shorting the switch pins, there may be a power supply problem or a motherboard circuit problem.
The power cord is loose, or the power strip is loose, or the strip is not powered. The host power supply is broken. The computer's motherboard is broken. The switch button on the main unit is broken, or the button is stuck. Solution: Plug in the power cord tightly, check the plug on the plug-in board, and confirm that the plug-in machine is powered on.
a. Confirm the connection of the power cord and whether the socket is plugged in as shown in the figure below. If there is a main power switch on the extension cord, make sure it is on.
After cutting off all power, open the case, remove the button battery on the motherboard for more than 5 minutes and then put it back, then plug in the power and try to turn it on. The independent graphics card is faulty. Unplug the graphics card and repeatedly wipe the golden finger part with an eraser and plug it back in again. If it doesn't work, you can unplug the graphics card and connect it to the integrated graphics port on the motherboard.
1. The motherboard jumper is installed incorrectly. If such a problem occurs, you should first check whether the interface at the motherboard jumper is installed correctly. If you really can't get it, Just unplug them all and use a metal object to short-circuit the two "Power" pins. If it can boot normally, the first thing to rule out is the core hardware problem.
2. The notebook power supply is insufficient. This situation is caused by excessive use of the notebook or excessive battery consumption on standby for a long time. As long as you charge it more before use, this problem will be solved. Nothing happens when booting. This kind of situation is usually caused by loose hardware or water in the notebook.
3. Internal dust or static electricity. If the computer is used for a long time, dust will accumulate, and the dust may cause poor contact of some parts. It is recommended to use a high-power dryer or air pump for dust removal operations. electricity failure. If these methods do not return normally, the power supply may be faulty.
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