The laptop can t be turned on, the battery light is not on, press the power switch, and the battery

1. The boot line is not normal: use the external power supply to supply power to the mobile phone, use the telephone meter to detect whether the indication has changed, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact. 2. The power supply circuit of the battery is abnormal

Use the external interface to power the phone, see if it returns to normal when it is turned on, if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal. 3. The IC of the mobile phone power supply is abnormal: test the test on the peripheral circuit of the power supply IC according to the circuit schematic diagram to see if the test value is normal.

4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone to check whether the waveform in the reset is correct. 5. There is a problem with the logic circuit

That is, the fault of the mobile phone circuit version can generally be solved by repair welding. 6. Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to not turn on, and the mobile phone can be connected to the computer to delete the program.

Let's see if the power adapter is broken. Method: Unplug the battery from the laptop. Plug in the adapter directly to see if it can be turned on, if it can be turned on, it means that the power adapter is good. Otherwise, it is handled as follows:

1.Disassemble the laptop, discharge the COMS battery, and put it back on.

2.Check whether the equal cables on the motherboard are connected correctly and stably, and unplug the hard cable and plug it back in.

3.Contact after-sales processing.

Summary. Hello dear. I am Master Li, who is engaged in computer repair. It's a pleasure to serve you. The laptop power light flashes and can't be turned on, the possible situations and solutions are as follows.

The power light of the laptop flashes and it can't be turned on.

Hello dear. I am Master Li, who is engaged in computer repair. It's a pleasure to serve you. The laptop power light flashes and can't be turned on, the possible situations and solutions are as follows.

1.The first situation is that the computer is seriously losing power, and you only need to charge it for about an hour before turning it on.

2.In the second case, the charger is damaged. Despite the power light on. However, if the charging current is not up to standard, it will not be able to be turned on. In this case, you can only try to replace one charger of the same model.

3.Scenario 3. There is a problem with the switch of the laptop. It may be a transistor or an isotonic. Normal boot is not possible. This situation must be replaced by a professional repairer.

4.Scenario 4. The laptop won't turn on due to a program glitch.

All you need to do is press and hold your computer's power on and off button for 20 seconds. Then try restarting. If your computer has a dedicated reset hole.

You can try pressing the reset hole with a pin.

5.Scenario 5. The power supply caused by the blue bridge or CPU of the computer is abnormal. In this case, you can only seek a professional repair personnel to repair the motherboard.

You should check it first. Exclusion tests are done first. Simple determination of the scope of the fault. You can ask me if you have any questions during this period, and I am always there.

There are several reasons for this:

1. The power adapter (charger) is broken, resulting in no power supply for the computer, but the computer battery supplies power to the motherboard for a short time. Use a multimeter to check the voltage at the output plug of the power adapter, and if the voltage is too different from the voltage marked on the adapter or there is no voltage, try replacing the power adapter. If the output voltage of the adapter is normal, check it as follows.

2. The power interface of the computer is in poor contact or damaged, when the adapter is normal, the computer should have a power indication and charging indication when plugged into the computer, if the computer is not displayed when plugged into the external power supply, it is a problem with the power interface or the power control of the motherboard, which can only be sent for repair.

3. The motherboard has a short circuit and causes the power supply to protect the shutdown, this situation is the most serious, and the probability of replacing the motherboard CPU is greater, and the reason for this situation is that the computer fan is bad and causes heating and does not shut down.

4. If there is a spare battery, you can change to a normal battery with electricity to try to turn it on. In this way, it is possible to determine whether the problem is before the host power supply or after the power supply. If only the power adapter is broken, it is the easiest, you can replace it, and other faults can only be tested and repaired by a professional repair shop.

What are the precautions for laptops:

1. Do not use in an unstable environment. This is very harmful to the hard drive, and in severe cases, it will invalidate the hard drive. Note that it is best to turn off the laptop for more than 20 seconds before moving the laptop.

2. Do not use it in an environment where the temperature is too high or too low, which will affect the LCD display and battery. The low temperature is not less than 10, and the high temperature is not more than 30.

3. Please stay away from microwave ovens, speakers and other magnetic materials, which will cause great damage to the hard disk, and even make the data of the hard disk disappear. This memory is far away from electronic devices such as mobile phones that generate high-frequency signals.

4. Maintain your laptop regularly, a laptop is a relatively "delicate" device, so you should pay attention to its regular cleaning and maintenance to prevent crashes and stalls.

Summary. 1.The laptop can't turn on, the power light flashes, you need to check whether the computer adapter and the charging port are not in good contact.

Loose and other situations, the circuit or internal failure of the computer adapter will cause the power light not to light up, then directly choose to replace a computer adapter, if the interface is loose, poor contact, you can consider changing a charging interface. Computer adapters also have a certain lifespan, so if you use them for too long, you can consider changing to a computer adapter. 2.

If the power light of the notebook does not light up, it may also be that there is a problem with the circuit or battery of the motherboard, resulting in a short circuit in the line, and when the power supply is connected to the computer, the computer will automatically protect it, causing the power light to not light up; At this time, you can only go to a professional to check the circuit board and see if the circuit board is faulty.

Hello, the specific reasons and corresponding specific solutions are as follows:

The computer buzzed, and the light on the charging port was still flickering.

What's going on? 1.The power light flashes when the laptop can't be turned on, and you need to check whether the computer adapter and the charging port are not in good contact.

Loose and other situations, the circuit or internal failure of the computer adapter will cause the power light to not light up, then directly choose to replace a computer adapter, if the interface is loose, poor contact, you can consider changing a charging interface. Computer adapters also have a certain lifespan, so if you use them for too long, you can consider changing to a computer adapter. 2.

When the power supply is connected to the computer, the computer will automatically protect it, resulting in the power light not lighting up; At this time, you can only go to a professional to check the circuit board and see if the circuit board is faulty.

Your computer is buzzing, and the light of the charging port is still flickering, which is due to the abnormal power supply caused by the computer's blue bridge or CPU.

Solution: The motherboard needs to be repaired, and the computer blue bridge and CPU memory module need to be replaced.

The computer blue bridge grinding is an important part of the motherboard chipset, generally located on the motherboard far from the CPU socket below, near the PCI socket, this layout is to take into account that it is connected to the IO bus, away from the processor is conducive to wiring. Compared with the North Bridge chip, its data processing capacity is not large, so the South Bridge chip generally does not cover the heat sink, due to its damage caused by the computer buzz motherboard Wang You poor charging is insufficient, the light of the charging port is still flashing but can not charge the motherboard normally, so it needs to replace the blue bridge parts to solve. I hope my sleepy skin is helpful to you and I wish you a happy life

The power light of the notebook flashes and can't be turned on, hello dear, the notebook can't be turned on, you can check it according to the following methods. 1) First remove the battery, unplug the power plug, stare and hold the power button for about 5 seconds, then plug in the power to see if it can be turned on, if it still can't be turned on, continue the following steps. 2) Remove the battery, unplug the power plug, and open the back cover screws with a Phillips screwdriver.

There is an opening on one side of the cover, and the cover can be removed by gently cocking it along the opening with a screwdriver. 3) After removing the cover, find the memory module, and use a screwdriver to gently open the card car on both sides of the memory module, so that the memory module can be released. Gently close the memory module and remove it, and wait a while before putting it back on.

Summary. 1.The first case is that the computer is seriously losing power, and you only need to charge it for about an hour before turning it on2

In the second case, the charger is damaged. Despite the power light on. However, if the charging current is not up to standard, it will not be able to be turned on.

In this case, you can only replace one charger of the same model to try3Scenario 3. There is a problem with the switch of the laptop.

It may be a transistor or an isotonic. Normal boot is not possible. This situation must be replaced by a professional maintenance personnel to solve the problem4

Scenario 4. The laptop won't turn on due to a program glitch. All you need to do is press and hold your computer's power on and off button for 20 seconds.

Then try restarting. If your computer has a dedicated reset hole. You can try to press the reset hole with a pin5

Scenario 5. The power supply caused by the blue bridge or CPU of the computer is abnormal. In this case, you can only seek professional maintenance personnel to repair the motherboard, and you should check it first.

Exclusion tests are done first. Simple determination of the scope of the fault. You can ask me if you have any questions during this period, and I am always there.

1.The first situation is that the computer is seriously losing power, and you only need to charge it for about an hour before turning it on2In the second case, the charger is damaged.

Despite the power light on. However, if the charging current is not up to standard, it will not be able to be turned on. In this case, you can only replace one charger of the same model to try3

Scenario 3. There is a problem with the switch of the laptop. It may be a transistor or an isotonic.

Normal boot is not possible. This situation must be replaced by a professional maintenance personnel to solve the problem4Scenario 4.

The laptop won't turn on due to a program glitch. All you need to do is press and hold your computer's power on and off button for 20 seconds. Then try restarting.

If your computer has a dedicated reset hole. You can try to use a card needle to press the double bend Hu closed hole 5Scenario 5.

The power supply caused by the blue bridge or CPU of the computer is abnormal. In this case, you can only seek professional maintenance personnel to repair the motherboard, and you should check it first. Exclusion tests are done first.

Simple determination of the scope of the fault. You can ask me if you have any questions during this period, and I am always there.

I dismantled the ash and then can be disturbed, it took six or seven hours, and then there is no problem, after 3 hours of shutdown, read the lead and found that the flashing light does not turn on, and then disassemble the ash line plugging, open and OK, the next day can also be opened, today it took two hours to turn off the baby good, after two hours and then open and no, can turn on is not a problem with the motherboard.

Just because you can turn it on doesn't mean there's nothing wrong with your motherboard.

Then how much do I estimate for this repair?

Dear, because I don't know if you are sending hail now, which Lu Xian is on the one hand? I listed five kinds of damage above the morning car, and then they all repaired ** are different.

If it's the fifth one, how much will it cost?

Kissing is about 200 to 300 yuan.