The power cord of the laptop is not plugged into the computer, and the indicator light is on, and it

The voltage is unstable, the adapter is burned out, it is recommended to go to the after-sales service to see, it is expected to change an adapter, if the voltage is not very stable. It is recommended to purchase a voltage regulator to protect the book.

The power supply hub of each part of the computer: the adapter 220V power cord and driver, most of which are a diode that penetrates the 'bridge' and then repairs. You can go and get your computer adapter repaired.

Or check the battery reason: the computer power supply is 220V AC, such as the motherboard. At present, most of the PC power supplies are switch-type power supplies, which are converted into direct current, 12V output line problems or internal problems of adapters, graphics cards and other power supply equipment and an important part of computers.

The power circuit or charging circuit or battery of the notebook motherboard is damaged, and it is specially designed for computer accessories, causing a short circuit, but the adapter is still relatively easy to repair, and the power protection is so the light is off.

Then you have to see if the battery is not in good condition, or if the power connector on the computer is loose and the head is broken.

It's your power supply that is pregnant, and the power supply is poor. I have done after-sales and encountered such a problem, you can try it again.

Answer 1: Remove the battery on the back of the notebook, connect the computer with only the power adapter, and try to turn on the computer, if the boot is normal, then it is caused by poor battery contact or battery failure. 2. 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. 3. 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. 4. Unplug the power cord, remove the battery, open the back cover of the memory, plug in and unplug the memory, wipe the gold finger part with an eraser, and plug it back in (don't reverse it) 5. If the above operations cannot solve the problem, it is recommended that the notebook be sent to the maintenance center for testing.

Hello, take an early break.

Tomorrow I will go to the repair shop to see what the boss has to say, and I don't need money to ask.

Don't worry, there won't be any major problems, it can't be a problem with the motherboard, then the other problems are minor problems.

1. Check whether all the plugs of the power supply and the wires on the adapter of the notebook are firmly inserted into their respective sockets, if not, it means that the contact with the power supply is poor, just press the plug down again.

2. If the indicator light is not yet on, on the premise of ruling out the power adapter, it must be that there is a problem with the power chip of the motherboard or a short-circuit breakpoint, and the motherboard is not powered on.

3. If the indicator light responds but the screen is black, it may be a problem with the graphics card or memory.

4. There is no display when the boot is normal, check whether the power cable, switch, and data cable of the display are correct, and it is also possible that the display is damaged.

If the problem of the notebook appears, you need to find an after-sales service or computer repair shop to solve it, and it is estimated that there is a short circuit on the motherboard, so the indicator light will not light up when the notebook is plugged in.

It means that your socket has no power, or the charger is broken, you can check whether the socket has electricity, and if not, you can try to change the socket.

If the indicator light is not on, then it means that the power supply is not connected, and check whether there is a problem with the power supply first. If there is no problem with the power supply, then the computer itself is a problem that needs to be repaired. It's definitely a hardware issue, not a system issue.

Plug in the power cord, but the indicator light does not light up, it means that there is a problem with your power supply, either the cable is broken or the socket is broken, or the power supply is dead, or one of the power supplies of the laptop is broken.

If there is no problem with the power cord, it is a problem with the computer.

Shake the power interface, see if it is not in good contact, 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 is not good, the power supply circuit of the motherboard is broken, in general, the power interface is in poor contact or the motherboard is broken.

If the laptop fails to turn on, you can troubleshoot it as follows:

1) First remove the battery, unplug the power plug, press and hold the power button for about 5 seconds, then plug it in 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 remove the clips on both sides of the memory module, so that the memory module can be released. Gently remove the memory module and wait a few moments before putting it back on.

4) Cover the cover plate in reverse according to the disassembly method, install the battery, and turn on the power button to restart.

Hello, according to your description magnanimous, the laptop plugged in the power indicator does not light up, it may be caused by the following reasons for the macro let:1Power adapter failure:

A power adapter is an important device that converts AC power to DC power to power your laptop. If the power adapter is faulty, it won't be able to power properly, and the computer won't turn on. 2.

Battery failure: If the battery is old or damaged, it will also be cautious and the computer will not boot normally. At this time, you can try to take out the battery and directly use the power adapter to power the power to see if it can be turned on normally.

3.Power connector failure: If the power connector is loose or damaged, the computer will not be able to charge and turn on normally.

At this time, you can check whether the power connector is loose or damaged. 4.Motherboard failure:

If all three of the above conditions are ruled out, then it may be caused by a motherboard failure. At this point, a professional is required to carry out the repair. In short, you can first check whether the power adapter, battery, and power connector are normal, and if the problem persists, it is recommended to contact a professional for repair.

The laptop can't turn on, and the power indicator light doesn't light up when plugged in, this problem can basically be judged to be a problem with the power supply, because most laptops now have a backup power supply, when plugged in, the indicator light is not on, indicating that the power supply has not passed at all, maybe there is a problem with the power supply of the notebook, and changing the power supply should be able to solve it.

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Hello. Questions.

Hello. Hello.

1. If the laptop cannot be turned on for a long time, you can try to pull out the battery, and then use the power adapter to power it, and it can probably be turned on successfully.

2. Then plug in the battery and see if the charging indicator lights up normally. If the charging display is lit, the battery can still be charged. You need to turn on the battery after it is fully charged.

3. If there is no signal to enter the monitor, you can open the BIOS system by restarting and installing the F12 button, and then reinstall the system to recover.

Extended Information: Desktop computer won't turn on Solution:

1. If there is no problem with the computer line connection, we will first use the simplest method to release the battery electrostatic method to try to solve the problem that the computer cannot be turned on. Unplug the console, and then press the console power on button a few times.

2. If you still can't turn on the machine, we need to enter the disassembly process, open the case panel, find the BIOS battery on the motherboard, cancel it and let it contact the metal for a few minutes before installing it back.

3. Of course, the reason why the computer can't turn on is not only the battery, but also the memory module, graphics card, and CPU are suspicious.

4. The CPU is too precise, and it still doesn't move. Remove the memory module first, (be careful not to pull it out, break the buckles on both sides and take it out) and wipe the gold finger with an eraser. Reassemble.

5. Next, also remove the graphics card and wipe the gold finger part. Put it back on and restart your computer.

6. Of course, dust is also a big killer that causes the computer to not turn on, if there is too much dust, it should be cleaned to avoid short circuit on the motherboard.

Questions. Can you hear from me?

Can you hear from me?

Yes, my laptop is very old, very old.

Yes, my laptop is very old, very old.

That's the power is out.

Questions. This computer was bought second-hand by a child in the family for school because he was afraid of playing games.

This computer was bought second-hand by a child in the family for school because he was afraid of playing games.

And then what about his computer, now it may be that he has been rushing to start the computer but has not used it. It didn't work for about half a month.

And then what about his computer, now it may be that he has been rushing to start the computer but has not used it. It didn't work for about half a month.

It was normal to use it before, and it didn't work for about half a month.

It was normal to use it before, and it didn't work for about half a month.

Now it's just a matter of charging and then powering on.

Uh, it's normal, if it's not in use, you're going to have to pull the battery out.

Otherwise, his laptop will run out of power and will be difficult to store.

Hello there! It should be a problem such as loose or oxidized memory modules, and the treatment methods are as follows: the first method; Memory plugging and inserting method: Disassemble the notebook to find the memory module, open the live buckle, remove the memory module, wipe it clean, and turn it back in.

The second method; COMS battery dischargeFind the COMS battery in the notebook, press the live buckle, take out the battery, connect the battery to the positive and negative poles in turn for 30 seconds, turn it on, if it doesn't work, repeat it several times.

The third method; Find the hard disk cable in the notebook, check if it is loose, and unplug the socket plug plug.

Pro-3, I hope it helps you, give a thumbs up!

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Reason why the computer won't turn on:

1. Problems with battery and power supply: When the built-in battery runs out and is not charged, it will cause the notebook to fail to turn on, at this time we only need to plug in the power supply to charge;

2. It may be caused by an infected virus: press and hold F8 to enter the advanced options page, select the latest correct configuration, and press Enter;

3. Hardware problems: disassemble the notebook to see if the hardware is loose, generally the hardware is not plugged in well, there will be an alarm sound, the long sound keeps ringing to indicate that the memory module is not plugged in tightly, one long and one short means that the memory or motherboard has a problem, one long and two short means that the graphics card is wrong;

4. Display problem: 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 it is not the problem of the monitor.

Then you should first check if there is electricity in this socket, if there is electricity, then there may be a problem with the charger.