The laptop won t turn on, and the display light won t light up

The laptop can't be turned on, and you need to confirm the problem in the early stage:

Check whether the power indication on the power adapter is on; Under normal circumstances, whether there is a constant light on the start-up console, and whether it is on now; Pay attention to the sound of a fan turning.

Observe if there is no display on the screen, or if there are some English letters that flash and then go black.

Determine the fault method.

No lights are on. Check the power plug, adapter power, laptop plug, laptop power button.

There are lights on. Hardware issues, such as memory modules, etc.

Hello, first check whether the battery has power or not. Try to plug in only the battery first, unplug the power supply and turn it on. Try to remove the battery and turn it on with the power supply.

If none of the above can be turned on, then unfortunately, it should be the motherboard is broken. Take it and fix it, and the worst result is usually to change a motherboard.

You can try it out as follows:

1. Without external power supply, press and hold the power button for about 3 5 seconds, can you hear the sound of the host starting.

2. Deduct the battery, press and hold the power button with the external power supply for about 3 5 seconds, can you hear the sound of the host starting.

3. When starting, do you hear the sound of the host starting? If there is sound but the screen is not lit, it is very likely that there is a problem with the cable of the monitor, and you can only go to the repair shop to check and repair it!

4. If it can't be started by any means, it is recommended to go to the repair shop to check and repair.

It is estimated that there is a problem with the hardware, and this can only be sent for repair.

Unplug the battery for a few minutes and try it back on.

Repeat the above steps and connect the power supply, if the light does not turn on, it means that the motherboard or CPU is broken.

This will happen if the laptop has not been used for a long time and the battery board is completely discharged!

The solution is: remove the battery first, then install it again, plug in the external power supply, then wait for a while, and then turn it on again.

If there is no power indicator yet, then it means that the laptop has been placed for a long time, and some hardware has failed due to moisture, dust, and other problems!

If it is still within the warranty period, you can contact the manufacturer for after-sales.

If you find it useful, thank you.

It's not powered, I guess it's broken.

The biggest reason why all the indicators don't light up is that the battery is dead and the charger can't be charged. Follow this line of thought to find the reason.

Then there are reasons.

1.The battery is broken, the battery is loose and the contact is poor.

2.The charging connector is broken, 3The charger is broken.

4.The power strip is broken.

5.Tripping power outage.

If the laptop suddenly fails to turn on, all the indicators are not lit, it is likely to be a hardware failure, and it is recommended that you contact the after-sales department to serve you.

1. Explain that your motherboard has a slight leakage in the shutdown state, and your battery is almost leaking, I have encountered this treatment, press the power button when unplugging the power supply, and plug it in immediately when the indicator light is on.

2. There are two definitions of not being able to turn on the machine in maintenance: no display on the boot and no power-on. Boot without display means that the boot screen is black, and the power indicator light is on, which is explained in detail in the article Black Screen on Laptop Boot.

3. The fault performance of not powering on is: the laptop cannot be turned on, that is, the indicator light does not light up after pressing the power on button, the fan does not rotate, and the computer does not respond at all. This kind of failure is generally more serious, common in motherboard failure, damage to major components, liquid ingress into the machine, etc.

4. Motherboard failure is the main reason why the laptop cannot be turned on. It is often caused by factors such as liquid ingress of the notebook, damage, and damage to the components of the motherboard itself. Of all the laptop failures, the fix that won't turn on is the one that takes the longest time to repair.

Often, a laptop has a very new appearance, and when you take it apart, you find that the motherboard has been seriously damaged or has been repaired by others, and the repair rate is often very low. The notebook cannot be turned on due to the motherboard, which is divided into circuit failure and BGA failure in notebook maintenance.

The laptop has a black screen and no indicator light when it is turned on, in this case, the power supply part of the notebook or the hardware may not be able to turn on normally without passing the self-test, it is best to go to the manufacturer after-sales service to check the quality of the hardware such as the motherboard.

This may be a system failure, or a hardware failure, and it needs to be detected and solved in many ways

Remove the battery on the back of the laptop, connect the computer with only the power adapter, and try to turn it on, if the boot is normal, then it is caused by poor battery contact or battery failure.

Only use the battery, do not connect the power adapter, if the boot is normal, then it should be caused by a problem with the power adapter or a short circuit in the power interface of the notebook.

Unplug the power cord, remove the battery, and press and hold the power button for 30 seconds without letting go. Try to boot up, if the boot is normal, then it is only caused by the abnormal BIOS of the motherboard.

If the above operations cannot solve the problem, it is recommended that the notebook be sent to the repair center for testing.

<> laptops.

It can't be turned on, the indicator light is on, but it doesn't turn on: the indicator light is on, the power is on, and the screen is not displayed in any way, and the problem with the screen itself or memory, graphics card, and CPU will cause similar problems. It may be that the notebook screen switch is not in good contact, or it may be a problem with the lamp tube and the high-voltage board.

The answer is changed to apply to most computer models from brands such as HP Zhan 99 Pro G2 MT, Lenovo Tianyi 510s, etc.

1: If the power adapter is damaged, if possible, you can use a multimeter to directly measure whether the power supply has an effective voltage output. 2：

Motherboard failures are often caused by factors such as liquid ingress into the notebook, broken laptops, and damage to the components of the motherboard itself. In notebook repair, it is divided into circuit failure and BGA failure. (1) Circuit failure: Most of the laptops cannot be turned on, and the faults are due to problems in the protection isolation circuit and the failure of the boot circuit and EC peripheral circuits.

2) BGA failureThe laptop failure caused by BGA failure is extremely common in notebooks that use DBM as the South Bridge chip in the Swift Relaxation generation.

Questions. I went to the physical store and asked about the batteries, which are suitable.

It could be a motherboard issue.

I logged in a** and suddenly the screen went black.,And then I can't open it.,I can't charge it.。

Are you there. If the motherboard fails, contact a professional maintenance master to deal with it.

You can remove the battery first, wait for about 10 minutes, connect the power adapter and try to turn it on, if it can't be solved, you can only send it for repair.

Shake the power interface to see if the contact is bad, if there is no reflection, try to start with the battery to see if it works, if you can use the battery, the front circuit of the computer is broken, that is, the power adapter to the main power supply part.

If it doesn't work, the motherboard power supply circuit is broken.

In general, the power connector is in poor contact or the motherboard is pregnant.

In this case, it may be caused by poor contact of the power supply, you can try to restart it.

The notebook can't turn on all the indicators are not on, in this case, you can only go to the repair shop, in short, the motherboard has no power supply, the possibility of motherboard problems is relatively large, it may also be that there is a problem with the power cord, go to the repair shop to check it.

First of all, check whether there are problems in the circuit part, such as whether the power supply is plugged in well, whether there is poor contact, and whether the circuit, adapter, wire and laptop interface are broken or not energized; If there is, fix it; Second, if there is no problem with the first part, see if the adapter light is on, if not, it means that it is broken and should be replaced, the adapter is not expensive, only the model is right, it is easy to match; Third, if the first two situations are not, it means that there is a problem with the computer hardware, and it can only be sent for repair.

The power is out or the motherboard is broken.

External. Is it the same with unplugging the battery and plugging it in?

Be. Then press the case switch key of the keyboard, and the indicator light is not on?

No. The front few are bright before it can be turned on.

If not, now the problem is in the memory and motherboard. Can you disassemble the phone and plug in the memory module?

Let's see how it goes, if it doesn't work, it's a problem with the motherboard.