The laptop does not turn on the indicators are off for the reason. Black screen: laptop does not turn on and the power indicator does not light or does not turn on with battery, but is working normally from the mains (problem solving)

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The most common failure for most laptop users is a battery that does not charge when the power supply is on.
It happens that this trouble happens with a new (just purchased) laptop.
There are some variations on this.
For example, the system reports that the battery is connected, but does not charge.
Also, the laptop itself may not respond to plugging into an outlet.
Let's take a look at the most common reasons why charging does not work.

Weak tension

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One of the most common reasons - you see that in the notification area there is a system message that the battery is charging, and in brackets - "Plugged in, not charging".

Check the mains voltage.

Maybe the problem is in the whole apartment or a specific outlet.

Plug into another and see.

Cord problem

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The wire under the braid may break.

In this case, check the voltage with a tester.

If it is not there, then connect it to another device or use a working power supply (and you know that it definitely works).

Often, many do not have such opportunities and need to buy a new adapter.

Overheating of the battery

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In this case, the system stops charging so as not to damage the laptop battery itself.

If you just plugged it in and charge normally, but after a few minutes suddenly stopped, then the reason is the overheating of the battery itself.

No charge with a working power supply

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Having returned from the store with a brand new laptop, you found that it did not charge and that it had a pre-installed licensed system?

In this case, there may be a manufacturing defect, which is unlikely, or incorrect initialization of the battery (problem with the controller).

We perform the following actions:

These steps do not always help, but at least they are safe, easy to do, and will save you time if the problem is resolved.

There are two more varieties of this method:

1 Only for the case with a removable battery - disconnect charging, remove the battery, then press the power key and hold for a minute.

Then we connect in the following sequence: battery - charger.

The laptop must be left off for at least 15 minutes, then turned on.

2 With the laptop turned on, turn off the charging without removing the battery.

Press the start button while holding it until it turns off completely (in most computers until it clicks) for another minute.

After the done, we connect the charging and after 15 minutes, turn on the laptop.

The problem with the BIOS

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If none of the above worked, then the problem with laptop power management and charging may be due to an early version.

In this case, resetting the BIOS settings will help the computer owner. To do this, we perform the following actions:

Turn off the device
We take out the battery
Disconnect the charger from the network
Press the start key and hold it for a minute
We connect the laptop to an outlet without a battery
We turn on and go to BIOS

Logging into BIOS for various laptop models

Acer - keys such as F1, F2 or Del.
Asus - F2 or Del keys.
Lenovo - the same keys as in the previous cases or F12
HP - you can press the same buttons or Esc.

Other netbook / laptop models use the same keys as described above at boot time.

1 Find an item Load defaults (it's in the EXIT menu).

In this way, you will set the default settings that are optimal for your laptop.

2 After BIOS prompts you to save the settings, press YES and then turn off the device by pressing the start button and holding it for 10 seconds.

3 Turn off the charging, insert the battery and you can start the computer.

After completing these actions, the system informs about the correct charging and detection of the battery.

Use the next step if none of the above helps.

Find on the official website of the manufacturer of your brand of computer downloads, in the section "Support" download and install the updated BIOS version.

Make no mistake with your device model!

ACPI and Chipset Drivers

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You can eliminate them in the following ways.

The first of them can help, if yesterday your charging was working, but today it stopped, then we follow this algorithm:

Moreover, in the device manager itself, the presence of installed drivers without updates for them can be shown.

In this case, go to the official website of the manufacturer of your device, download and install drivers for your laptop model.

To guide you? I will give below their names:

Intel Management Engine Interface
ATKACPI (for Asus)
Individual ACPI drivers

There are also other system drivers. As well as software (Power Manage or for Lenovo and HP laptops - Energy Management).

Power Supply

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If the battery is connected while it seems to be charging, but in fact not, then you need to try all the troubleshooting methods described above.

Did not help?

Then most likely the reason for this problem lies in power supply failure.

See if the indicator of the block itself (if any) is on.

When the device does not turn on without an adapter, the most likely cause is the adapter (but it could be in the connectors or electronic components of the device).

There are cases of malfunction of both the charger itself and the controller on it.

And there are also problems with the laptop connector or the battery connector - oxidized or damaged contacts.

The same points cause problems with the adapter even when there are no charging notifications in the Windows notification area.

In this case, the computer runs on battery power and simply "does not see" the connected one.

Extra programs

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If you have completed all the previous points, but understand that your device quickly "eats up" the charge, then you need to pay attention to those working in the background.

To do this, open the task manager by holding Ctrl + Shift + Esc and analyze the CPU usage.

It is necessary to sort those from the list that use the most processor, and observe them for a few minutes.

By removing programs running in the background, we will extend the battery life.

Checking battery wear

There are times when the old battery does not charge or is not fully charged.

This occurs with very frequent charge / discharge cycles. Thus, the capacity of the battery itself is reduced, people say "quickly sits down".

And it turns out that it discharges very quickly and does not fully charge.

The question arises, how to find out the real capacity of the battery and the degree of its deterioration?

You can take the laptop to a service center, or you can try to solve this problem yourself.

The first way

We go to the start menu and enter in the command line

and press Enter.

Or on the command line, enter

Powercfg energy

plus the Enter key.

If the system requests administrator access, then you need to log in with administrator

After that, a notification about the operation of the system should appear, and the report will be generated in 30 seconds.

In our version, the system placed it at “ C: \\ Windows \\ System32 \\ energy-report.htm«.

After that, go to the dad with the report, then copy it to the desktop and open it.

After that, in the file that opens, we are looking for a line that contains information about.

We are interested in the last two lines, which are highlighted with a yellow arrow.

With this data, we can easily calculate wear and tear by applying the following formula: (calculated capacity minus the last full charge) and divide by the calculated capacity.

This gives us the percentage of wear.

Second way

Requires installation of a special program: AIDA 64.

With this utility you can practically everything about your computer.

If the computer does not respond when you press the power button, this is a sign of a serious hardware or software problem. Getting rid of software faults is easy enough - no need to disassemble the laptop case and check the state of internal components. But hardware problems can only be fixed by replacing or repairing broken components.

Why won't my laptop turn on?

Before trying to fix a problem, it is advisable to first determine the cause. Problems can arise due to various factors, the most common ones are listed below:

breakdown of the RAM card or its lack of connection to the motherboard;
critical battery discharge due to a broken power adapter;
breakage of the connector for connecting the battery or the battery itself;
system failures in BIOS settings;
failure of the video card, as well as one of the bridges of the system card;
disconnected loop or damaged power connector.

Determine which option is right for your case, since different solutions work for different problems. Then follow the instructions.

Laptop does not turn on, lights are off

If nothing happens when you press the computer's power button, a battery may be broken. Carry out diagnostics in the described way:

Make sure there is voltage in the line filter.
Plug in the power adapter and see if the indicator comes on (not available on all models).
Check if the light is on on the laptop itself (usually on the side of the computer case).
Unplug the power cord, remove the battery from the compartment, and plug the adapter back in and start the computer.

If, as a result, any of the indicators did not light up, the reason why the laptop screen does not turn on is in the power adapter or in the port for connecting the charger to the computer. Check the cable for kinks or damage, or make sure the laptop will charge using a different cable.

If, after removing the battery from a special compartment, the computer charges without interruption, the cause of the malfunction is in the battery. Perhaps she just served her term, then get a new one.

The above are exactly the actions that you can perform on your own, at home. This does not require special tools and professional skills. However, the cause of the problem may lie in the failure of not only the adapter, but also the motherboard or power controller.

Why does my laptop turn off immediately after starting up?

These are symptoms of a malfunction in the cooler system: due to overheating, the computer automatically shuts down. There may be other hardware problems as well.

Clean the inside of your computer and replace dried thermal grease. If you are afraid that you will do something wrong, contact the service center. If this does not help, then most likely the south bridge in the laptop has burned out. Then you cannot do without the help of a specialist.

The screen does not light up, although the laptop itself is working

Perhaps you just accidentally pressed the keyboard button responsible for the backlight function. If pressing the key does not help, turn on the laptop and shine a flashlight on the monitor. If the image starts to show through, the reason is a blown backlight bulb.

What if the laptop won't turn on?

Diagnose the system, checking for possible causes of the problem:

the north bridge of the motherboard is out of order;
damaged matrix or cable connecting the monitor to the board;
the video card is broken;
damaged BIOS firmware.

If your laptop refuses to turn on, then there may be several reasons. But first you need to decide on the concept "does not turn on." If when you press (or hold down the power button) while the charger is connected, the laptop does not start, that is, you cannot hear the fan turn on, the screen remains black, then this means that the laptop does not turn on. In other cases, for example, when the screen remains black and you hear the noise of a working fan, your laptop has turned on, but there are other problems with displaying the image, etc. We'll look at both options.

The laptop does not turn on and shows no signs of life

Let's say that the laptop does not respond in any way when turned on. Why is this happening and what to do in this case? First you need to make sure that the power supply system is working. Usually, there is a charge indicator LED at the point where the charger is connected. If the indicator is on, then power is most likely supplied to the device normally. If you do not have a power indicator or it does not light up, then you need to make sure that the charger is working properly, for example, by connecting it to another laptop or by measuring the voltage at the plug being connected. In the latter case, you will need a special device - a multimeter, which must be able to use. Of course, the best option is to connect a guaranteed working "charger", tested on other computers.

After excluding the charger from the list of possible causes of malfunction, you should check the battery. Often, due to its malfunction, the laptop does not turn on even when the power source is connected. Remove the laptop battery and press and hold the power button for one minute. In this case, the charger should not be connected to the laptop. Without inserting the battery, connect the charger to the laptop and try turning on the laptop. If it does not start, then the power module on the motherboard may be faulty or there is a short circuit in the power circuit and even incorrect BIOS firmware of the motherboard. It is almost impossible to diagnose and eliminate such malfunctions without special equipment, therefore, in this case, there is a direct road to a laptop repair service center.

Another likely reason for the laptop not turning on is a malfunction of the power button itself. Its contact group or the lead-in loop may become unusable. On many laptop models, the button also illuminates when pressed. Therefore, if the power indicator of the laptop is on and the battery is definitely working, and the button does not respond in any way to pressing, then this may be the case. In this case, you will have to contact the workshop.

The laptop turns on - the screen is black

If your laptop still turns on, but the screen remains black, then this indicates a malfunction in the computer hardware. Moreover, such a malfunction does not occur instantly, of course, if you did not drop the laptop or subject it to strong mechanical stress. Failure of a backlight lamp or matrix inverter is usually accompanied by screen flickering, as well as uneven backlighting. These signs already indicate that the display may stop working soon.

Other reasons may be the failure of the RAM, as an option, the incorrect installation of the memory strip into the slot. The RAM must be tested using a special program, for example, Memtest86 +. Incorrect operation of the processor or north bridge, errors in the BIOS firmware - these are the reasons why the laptop can start with a black screen. Also pay attention to the CapsLock and NumLock indicators, they often start blinking in a certain way, indicating a particular hardware problem in your laptop. You can decode such signals on the device manufacturer's website.

If at the initial stage of loading, some information is displayed on the screen, but then the display goes blank, then the problem is probably related to the inability to initialize the BIOS. This malfunction is caused by the components of the laptop, in particular, the chip of the south bridge, the processor (in this case, reboots occur some time after turning on the laptop). Power outages can also affect BIOS performance, especially when the battery is dead. If the issue of overheating can be solved by replacing the cooler, then it is better to entrust the search and elimination of problems with BIOS firmware and other hardware faults to a specialized service center.

Another symptom that the user may encounter is the laptop freezing after turning on. In this case, the computer does not respond to pressing buttons on the keyboard. Such cases are often encountered when there are problems with the hard disk or with the operating system itself. To diagnose the hard drive, you need to perform a special test, for example, with the HDDScan program. Testing will check the integrity of the hard disk sectors. You also need to check if it is connected correctly. The failed south bridge could also be the culprit.

Software problems

This kind of problem can be attributed to the category "laptop does not turn on" with a stretch, since, in fact, the computer starts up, but questions arise about the installed software. This is a separate big topic. But still, let's briefly go over the possible symptoms and solutions to problems.

If the reason lies in the area of \u200b\u200bsoftware, then the first thing to try is to start the operating system in safe mode. Usually, to do this, before starting to boot Windows, you need to press F8 and select the boot option from the proposed list. Click "Safe Mode". If in this mode the laptop starts up normally and no freezes occur, then you should check the computer for viruses. Also, if you installed any software before problems appeared, especially drivers, then they must be removed.

If, after all the manipulations in the normal boot mode, freezes or reboots still occur, then you need to check the integrity of the operating system files. To do this, you need to install a disc with the original OS image into the drive and execute the SFC / SCANNOW command in the command line. According to the results of the scan, damaged system files will be automatically restored.

The radical and most recent solution to problems with the operating system will be a complete reinstallation. Remember to make a backup copy of important files stored on the system drive.

Typically, most laptop hardware problems are best diagnosed and fixed at a service center. But experienced users are quite capable of dealing with software errors.

In some cases, it turns out that, despite the fact that the power indicator is on, the laptop does not turn on. Why does this situation arise? What do you need to pay special attention to? What might be required to correct this situation? It is actually not as easy to understand all the emerging issues as it might seem at first glance. The personal computer is a rather unpredictable piece of equipment. Power up problems can be the result of many failures. Some users are in a hurry to go to service centers. This is not recommended. First, it is advisable to independently diagnose the problem that has arisen. Perhaps it will be possible to cope with the situation without outside help.

Video card

The laptop won't turn on even though the power light is on? There are various reasons for this phenomenon. The first thing you might think about is a problem with the video card. In the case of a stationary PC, it is quite easy to detect and fix such a breakdown. To do this, just take out this component and connect it to another machine. But in the case of laptops, the user will have to try. If you suspect a malfunction or breakdown of the video card, it is recommended to contact the service centers for help or call the system administrator for help. You don't even have to try to diagnose the problem yourself. The laptop usually turns on by itself - you can hear the cooler. But there is no picture on the screen. Sometimes you can even hear the operating system loading.

Screen malfunction

If the power indicator is on, but the laptop does not turn on and the problem with the video card is excluded, then the monitor may be damaged or broken. This is an extremely rare occurrence that sometimes occurs in practice. If the display breaks down, then the reasons for the breakdown are likely to be the same as in the case of the video card. In this case, there will be no image on the monitor, but the sound of turning on the OS will appear. It will not be possible to deal with this problem on your own. Your only option is to buy a new laptop. You can try to contact the service center under similar circumstances. Perhaps the display can be repaired there. Usually, after such a repair, the devices do not work for long. Ultimately, you will still have to replace the laptop with a new one.

The following possible situation can be corrected without assistance. What if the power light is on but the laptop still won't turn on? The main reasons for this phenomenon are a crash or reset. Perhaps the BIOS settings are out of order. It is for this reason that the problem in question could arise on the laptop. In this situation, it is recommended to perform a BIOS reset and the computer should then be fully operational.

Lack of ingredients

What else could have caused this problem? If we are talking about a new laptop that worked before, then one should not exclude the absence of any components. If the laptop itself turns on, but nothing is displayed on the screen, and the NumLock and CapsLock buttons do not go out, then the BIOS may be initializing. The laptop probably does not have RAM or a processor; if we are talking about a device that previously functioned, then the reason may lie in the breakdown of the components listed above.

HDD

In some cases, it happens that despite the power indicator is on, the laptop still does not turn on, although it worked normally before. The hard drive is causing the problem. One small crash is enough for the computer to refuse to start. In this case, the power button will still be lit. You may also notice that the fan is operating normally. In this case, the NumLock buttons and others light up and go out, as expected. It is recommended to disassemble the laptop and disconnect the hard drive. Now try switching on again in this state. It did not help? Then you can try again to gently attach the component. If the problem was a crash, then it should go away.

Battery

What if the power light is on but the laptop still won't turn on? Diagnosing the problem in this case will require certain knowledge from the user. Do not rush to give your computer for repair. It should be borne in mind that most of these problems are usually solved with the help of a professional. You can solve the situation yourself if the problem is with the battery. She was probably just discharged. Then it will be enough just to connect the power to the network and the computer and try to turn on the devices again. It is better to wait a few minutes before pressing the laptop power button. This will allow the battery to receive some power. This technique turns out to be quite effective. Some experts also recommend removing the battery completely from the laptop and then connecting the power cord to it. After that, you need to turn on the computer and observe the situation. If the computer is working at full capacity, then nothing else needs to be done. Otherwise, the source of the problem will have to be addressed elsewhere. Practice shows that a discharged laptop or battery problems are quite common. These problems are eliminated quite easily and without outside help.

Closures

What to do if Samsung laptop won't turn on? In this case, the power indicator is on and the cooler is working. The following reason is quite rare. It is almost impossible to diagnose it yourself. This problem can appear if the laptop is damaged in the south or north bridge. Why does this situation arise? Bridge failures can be caused by various causes, such as short circuits caused by temperature differences. If, because of this, the USB port on the laptop is damaged, then the appearance of the problem under study will be quite likely. In this case, there is only one method of fixing this problem - repairing damaged components. Buying a new PC will be the most effective way to solve this problem. Repaired components in laptops are unlikely to last long. Here, each user will have to decide for themselves what to do.

Viruses

If the laptop refuses to turn on, but the device has previously functioned for some time, then you should think about the effect of viruses on the device. Often, a computer infection leads to the fact that the computer simply stops functioning normally. In some cases, it comes to BIOS virus damage. In this case, there may be problems with turning on the laptop. It is unlikely that you can fix the problem yourself. As with most of the previously mentioned cases, it is best to take your computer to a service center right away. Here you will be helped to restore the laptop to work and cure it from viruses. Fortunately, this scenario is quite rare. However, you should not exclude it, especially in cases where the user himself admits the presence of viruses on the computer. In some cases, problems related to turning on the laptop occur after the OS is treated. In this case, it will be enough to first reinstall the BIOS, and then the operating system. After that, no problems will bother you.

Conclusion

Let's summarize preliminary results. To begin with, it should be noted that diagnostics and troubleshooting in most cases boils down to calls to the service center. Most often, many do just that. After all, a laptop is a rather complex device. It is actually not as easy to repair it yourself as a desktop computer. If you cannot figure out on your own why the computer does not turn on, then you can immediately contact a specialized service center for help. If you suspect a specific problem, be sure to inform the service center staff about it.