One of the most common problems that are addressed to a computer service is a problem associated with turning on a laptop. What to do if you turn on your computer and see a black screen? In this article, we will try to highlight all the reasons due to which the laptop stopped turning on. At first it may seem that the problem is very serious, requiring the intervention of an experienced specialist. In fact, often such problems are associated with the usual inattention of the user and are solved quite simply.
All problems can be conditionally divided into two groups:
— Your laptop battery is dead. Your laptop may work properly, but at one moment a black screen may appear or stop turning on, what should I do? Most often, the reason is that the battery has exhausted its resource. To solve this problem, simply replace it. If you do not have such an opportunity now, then you can simply pull it out and insert it back into your laptop. Perhaps the battery will charge and work again (but not for long). You can also just take out your battery and connect it to power, in which case your laptop will run on electricity.
— Conflict with external media. It often happens that the laptop does not turn on due to the fact that a flash drive, camera, camcorder is connected to it ... Or the screen immediately turns off on the computer when these devices are connected ... In this case, you need to disconnect external media and try to turn on your device.
— Motherboard problem. The motherboard is the most important component of any computer. Damage to her death is like. Often this happens due to careless handling of the laptop, hitting it ... In this case, doing something yourself is useless and the only solution to the problem is to replace it.
— Bad contacts. This problem occurs if you have no battery in your laptop. A common problem in this case is bad contacts. Check that all wires are firmly attached to the computer. It is also worth checking the health of the outlet.
— Problem with accessories. Most often this is an overheating of the processor or video card. The reasons may be different, but the most common is the dusting of the laptop. To prevent this problem, it is necessary to clean the laptop from dust at least once every six months. If you are not confident in your abilities, then it is better not to take any action yourself, but to entrust the matter to professionals.
— Malicious software can block your computer. The symptoms are simple: the computer restarts at startup or gives a black screen instead of the desktop. computer This problem can be solved in three ways. The first is to go into safe mode and from there scan your computer with antivirus. The best option here is Dr Web Cureit. The second way is to "roll back" the system at the moment when it was working. This method is guaranteed to save you from almost all problems that are associated with the inability to turn on the computer (except for hardware ones).
The third way is a banal reinstallation of Windows. The most common way to solve problems, which, however, has some disadvantages.
— Driver problem. After installing the driver, the computer began to turn off or show a black screen? Most likely it's the driver. The best way to solve the problem is to reinstall the driver or roll back the system. Steps: Start > Control Panel > All Control Panel Items > Recovery > Start System Restore.
— A system file has been corrupted or deleted. May be the result of user actions or a virus. It helps to reinstall the system or rollback.
— Registry problem. Over time, the registry becomes polluted with unnecessary junk, as a result of which the laptop may slow down or intermittently crash. In this case, you need to roll back the system. It is also necessary to regularly make copies of the registry.
— Bios problem. What to do? This problem can be solved by resetting the settings. This will cause the Bios to return to its original state and the computer will start up normally again. After pressing the button to turn on the computer, immediately press the button to enter Bios (it is different for different operating systems). Wait a little. Next, press the F9 key (reset Bios settings) and press Enter (confirm the reset). If the problem was in Bios, then your computer is guaranteed to start, if not, then the problem is something else.
It happens that we start the game and the laptop turns off, or instead of our favorite shooter, we see a black screen in front of us. What to do and what are the causes of the breakdown?
Question from user
Good afternoon.
Tell me, is it possible to turn on the laptop if the power button does not work? The fact is that I already changed it 1 time, I used to press it 10 times while the laptop turned on (the laptop case in the place of the button is damaged, so something always falls under the button).
Now it's all about the second round...
Good day!
The question is certainly interesting. If you can turn off the laptop in different ways, including without physical keys (buttons), then turning it on is more difficult. Much depends on the model and design of your device...
In this article I will give several options for solving the problem, so to speak, with minimal "costs". So...
Specialist. buttons to enter BIOS / UEFI
Take a close look at your laptop. On some devices (for example, on a number of Lenovo laptop models), there are special buttons for entering the BIOS. In fact, this is an additional (emergency) button for turning on the device, and if the main button does not work for you, then try using it.
For reference. In general, this button ("with an arrow", see photo below) is used directly to enter the BIOS (and not an additional emergency button to turn it on). Press it when the laptop is turned off. After pressing, the device turns on and the start menu appears on the screen with a suggestion to enter the BIOS or implement the rules. loading.
Where can I find her, what does she look like? : most often it is located either next to the power input, or next to the power button of the device. As a rule, to click on it, you need to use a pencil (pen).
After turning on the laptop using this "emergency" button: just select the "Normal Startup" option and continue working as usual. Or, if there is no normal boot option, you need to enter the BIOS and exit from there without saving - the device should reboot.
By the way, if you have problems turning on the device, then, as an option, you can not turn it off, but transfer it to sleep mode . You can simply wake up the laptop from sleep mode using any button on the keyboard or mouse. To set up automatic transfer of the laptop to sleep mode, go to the "Power Options" section (see screenshot below).
Disassembling the laptop and closing the button contacts
Important! Disassembly of the device may be the reason for the refusal of warranty service. In addition, not careful and hasty actions can lead the device to an even more expensive repair than a simple replacement of the power button (therefore, everything you do according to the advice below is done at your own peril and risk).
In general, the Power button (Turn on) is designed to close the contacts that give an impulse to turn on the PC / laptop. Relatively speaking, if the button itself does not work, then these contacts can be closed with any conductive object, for example, a conventional screwdriver.
By the way, probably, many people remember how in popular action movies, in order to start a car, they break the lock and use several wires instead of a key, closing them together. Everything is the same here.
That is, the motherboard should have PWRSW connectors: if you disconnect the button from them and close the PWR and Ground contacts for 0.5 ÷ 1 sec. - the device will turn on!
However, there may be some difficulties here ... There are a lot of laptop designs, and it's not always so easy to get to the power button. In this article (of course) I cannot provide step-by-step instructions for disassembling a laptop (use the specification for the device for this, and disassembly reviews on specialized resources) .
In my example below, I gave a couple of photos of a laptop with a very simple disassembly:
You can close the contacts on the motherboard
Alternatively, instead of a button, you can remove the cable from the laptop case. And to turn on the device, you will close the contacts with each other. Basically, there are options...
P S
By the way, I want to note that if your laptop does not react in any way to the power button, it is possible that everything is in order with the button itself and the reason lies elsewhere:
Suggestions on the subject are welcome...
An incomprehensible situation, when the laptop does not show any signs of life when you press the power button, makes the user seriously nervous. The laptop is often used for work, so it involuntarily becomes scary for the fate of the documents stored on it.
Fortunately, these fears are not always justified: in most cases, any laptop malfunction, whether it be hardware problems or software failures, can be fixed without damaging data. Moreover, you can diagnose and fix this malfunction yourself.
As practice shows, the reasons why power button won't start laptop, maybe several. All of them can be divided into two groups - hardware (problems with hardware) and software. Consider the most common of them:
PC power failure- the most common hardware problem. It is possible that the laptop battery is completely discharged, and to fix the problem, it is enough to put the laptop on charge and wait a bit.
The lack of initialization is the main reason for a programmatic nature.
In this case, when you click on the "Start" button, the laptop starts, but does not fully boot. There may be several reasons for such behavior.
The most common ones are damage to the BIOS firmware, processor overheating (for example, due to a cooler clogged with dust), booting from the hard drive, etc.
Some problems of lack of initialization can be solved independently.
The power button doesn't work.
To make sure it's really laptop power button not working need to be diagnosed.
To do this, follow a series of steps:
VIDEO INSTRUCTION
If such manipulations did not work, and the button still does not work during testing, its complete replacement is required. To do this, the old part is soldered and a new one is mounted in its place.
There are several ways to turn on a laptop without a button.
If the computer is disassembled, you can start it by closing the contacts of the Power button with a screwdriver.
However, this method is only appropriate if you need to make sure that the button itself does not work, and that, say, the loop of the laptop power button is not interrupted.
When you urgently need to start your laptop for work, it's easier to use another method:
The laptop does not turn on and does not boot for various reasons - hardware or software. Often it does not start due to OS problems, incorrect BIOS operation, or after running malicious applications. Next, we will tell you why the laptop does not turn on, and we will also describe how to eliminate most of the problems due to which the device does not boot.
I can immediately make a reservation that by the nature of the malfunction, it is almost always possible to determine exactly which component of the laptop needs to be repaired. An analysis of the behavior of the device immediately after switching on can tell more:
Understanding the problems, as a result of which the laptop still does not turn on, is already half the way to solving them.
The reason why there are no signs of laptop life at all is mainly power problems. I can advise you to immediately exclude obvious things, for example, check if the device is receiving voltage. To do this, simply connect the power supply to the network - most adapters have a light bulb.
If it is lit, then the device is working. The laptop also has indicators that are lit to show that the device is connected to the network.
When the light is off and does not show signs of life, this indicates a non-working power supply. Sometimes the indicators do not light up due to loose connectors. You can extend the life of the PSU quite easily - you need to turn it on by first inserting a plug from it into the laptop, and then connect the device to the network. So the spark does not light up when connected, which is why the contacts fail more slowly.
In the case when all indicators are on when turned on, the problem may be in other devices. I can advise you to do the following:
If, after turning them off, the indication lights up normally, the laptop is working, connect external devices one by one - this way it will be possible to determine what caused the failure.
Sometimes the laptop does not turn on due to a non-working screen, although the device itself boots. Maybe the backlight just isn't on. Hotkeys can be used to turn it on. Their usual combination is the Fn button, pressed simultaneously with F2, F4, F5, etc., depending on the model and manufacturer of the laptop.
Sometimes the monitor itself does not give hope, and instead of the image, all kinds of artifacts can be displayed on the screen.
To check if only it is really faulty, the laptop should be connected to an external monitor.
To do this, you will additionally need a cable, it must match the interfaces on the external monitor and laptop. Usually on new devices there is no longer an outdated VGA interface at all, but there is a modern HDMI.
If the image does not load normally on the monitor, set the transfer mode on the laptop by simultaneously pressing Fn and one of the F1 ... F12 function keys, depending on the manufacturer. It usually schematically depicts a monitor and a laptop. This button is responsible for displaying the image - to a laptop, to a monitor, or to both devices.
If no signs of laptop life could be found on an external device, but all indicators are on, a discrete video card is a common cause of failure. Due to the frequent launch of "heavy" applications, games, poor performance of the cooling system and heavy dustiness, video card devices overheat and quickly fail.
Therefore, in order to extend their life, do not work on a laptop while sitting on a sofa or bed (this is how you close the ventilation grilles), and for “heavy” games, purchase a special laptop stand with built-in additional fans.
You can fix the problem either by replacing the burned-out module, or simply by turning it off. If it turns off, then the integrated graphics will work normally, but serious games on the laptop will no longer work. Switching can be done in the BIOS by setting the Disable option for the burned card. In addition to the described malfunctions, the device often does not boot due to the inoperability of the processor or motherboard.
Another case is that the splash screen picture lights up, information about the laptop may be displayed on the display, but then it shows an error message, the speaker starts beeping or nothing happens at all, the system does not boot. The main reason for such problems is incorrect BIOS settings. You just need to reset them to default. For this:
If the system does not start again, you should pay attention to other laptop modules - their malfunction can cause the same problem.
When there are problems with the fact that the hard drive has stopped working, they can also be diagnosed by some signs. To do this, just listen to the life of the HDD - the engine can spin the disk for too long in unsuccessful attempts to read information, the heads can also crackle cyclically for a long time. After that, he generally "hangs".
When the message “Error loading operating system” or something similar is displayed during boot, the problem may also be caused by a hardware or software failure of the hard drive. However, usually the reason for the inability to boot in this case is a USB flash drive forgotten in the USB connector or an optical disc in the drive.
An endless cyclic reboot of the laptop even before the OS loads happens due to problems with the motherboard. Specifically, this may be an overheating of the south bridge or a short circuit. Their source is often USB breakdown. A poor performance of the power supply can cause the problem of quickly turning off the laptop immediately after the start of the download - it goes out due to the fact that the battery simply stopped charging.
When suspicion does not fall on any physical module, you can try to restore or reinstall the OS to fix the problem. This will require installation media or a recovery disk (it is created directly in the system).
If, when trying to boot, the display shows an inscription that no operating system was found at all, you just need to restore the bootloader. Typically, these problems occur when installing a second, older OS. For example, when the computer already has Windows 8.1 installed, and you installed the “Seven” as an additional one, then problems with loading them are guaranteed.
However, the solution is quite simple:
To fix the problem, enter the following commands in sequence:
After the reboot, Windows should start up.
If the laptop does not work due to “broken” Windows, you will also need an installation disk or flash drive for recovery. There are different ways to carry out the operation:
He will be able to return the state of the system to a certain restore point, that is, until the moment when there were no problems with loading at all. If you want to completely reinstall the OS, in the diagnostic menu, select the partition to restore the OS to its original state.
And most importantly, don't panic. If yesterday you turned off the laptop and today it "died", deal with the problem with a cool head and do not act abruptly - this way you will definitely find ways to eliminate the malfunction.
Like any other piece of equipment, laptops tend to break down. This happens for various reasons. They fall, hot coffee or tea spills on their keyboards, they can't stand it when they sit down or press their backs. But often you have to deal with situations when the owner did not take any physical action in relation to the laptop, but it still does not turn on. A logical question arises - for what then reasons does the laptop not turn on, and what should be done to successfully restore it?
In this article, we will look at the most common causes of laptop breakdowns, as well as give practical tips for resuming their work.
Even before the software is loaded to the end, showing the desktop on the screen, the laptop performs a large number of operations. Regardless of which operating system you are using, tasks such as:
physical activation (response when pressing a button on the keyboard);
initialization (all system files necessary for the basic launch are loaded);
the appearance of an image (additional hardware is connected and loaded - the video card is on, and so on);
the main loading of the operating system (additional system files are loaded, including drivers, as well as programs selected by the user to automatically start at startup).
Breakdown, as a rule, can occur at any of the considered stages. It is quite difficult to find the cause on your own. How can you notice that the laptop does not turn on? The simplest symptom is that the image does not appear and you see a black screen. That is, the traditional picture symbolizing the loading of the operating system is not visible, and nothing is on fire at all. You may also notice that the equipment does not emit standard sounds such as noise, a system boot notification. In the most serious cases, no indicator works.
There can be several reasons why the laptop does not work at once:
1. The power supply has failed. As a rule, this is one of the most popular reasons. Checking why the laptop does not turn on is quite simple - you just need to connect another power supply, the plug of which is suitable for your equipment model.
If you see that the indicators on the body of the equipment light up and the download has started successfully, most likely you will need a new power supply;
2. No battery power. Please note that this breakdown cannot appear instantly, because when the battery is low, the operating system will ask you to connect to the network to recharge. Even when the battery is out of order and does not want to be charged, a battery icon with an exclamation mark will appear on the battery icon located on the right side of the taskbar (near the clock). Hovering over it, you will see that the system directly claims to connect a failed battery.
Connect your laptop to the power supply, and then press the power button on the laptop. In this case, the laptop should start up, and after the desktop appears, you will see that a portable power source is not connected to the equipment. Without turning off your laptop, try installing the battery in it (until a characteristic click appears). Wait a few seconds. The system will notify you if there are problems with the battery;
3. Motherboard burnt out. The motherboard is the main electrical circuit of the computer, which is responsible for both turning on and performing almost all operations. By default, the RAM chip, system memory, is installed here. With the help of special cables, an optical drive (CD and DVD reader), a video card, a hard drive, and many other components are connected.
Please note that you will not be able to repair the motherboard yourself. This requires special tools, as well as diagnostic equipment. The most common symptom of a breakdown is a strange squeak when you turn on the laptop, or to no avail by pressing the start button of the device. You will have to go to a service center where specialists will completely disassemble your laptop;
4. Missing initialization. Such a malfunction may appear in the following. When starting up a laptop, it boots up to a certain period of time when the hard drive light on the panel lights up. As a rule, there are several reasons for failure - server bridge failure, processor failure, missing BIOS firmware, unsuccessful update, and so on.
As stated earlier, if you see that when you turn on the laptop it does not respond, mechanical damage can also be a likely cause. A laptop is a technique that is not designed to withstand serious loads. The situation is especially difficult with ultra-thin laptops like the MacBook. Videos have been circulating on the Internet for a long time, in which you can see how the owners bend the case of this device with their hands, without using any additional tools.
Practice shows that when exposed to significant physical exertion, the motherboard, screen, hard drive, and other components can suffer.
Please note that if the physical part fails, you will have to pay for new components. Of course, in the case of the motherboard, you can try to restore it by diagnosing and soldering some nodes. But successful recovery in such cases is more the exception than the rule. You will be very lucky if the masters can restore the old motherboard manually, without replacing it with a new one. For a new fee, as a rule, you will have to pay an amount equal to a third, or even half, of the cost of a complete laptop (depending on the model, as well as the general characteristics of your equipment).
The display of modern laptops is a matrix connected to the motherboard using a special cable with its own microcircuit. It works with LED or AMOLED technology. Screen problems are rare, because it is one of the most stable components in terms of durability. But it also happens that the matrix has been broken, or it gives out the so-called “broken pixels” and an error lights up.
The screen consists of a huge number of dots that form a picture, painted in a certain color. "Broken pixels" means that one or more dots are not working - they are black. It also happens that the laptop display does not turn on at all, that is, a black background continues to be displayed on the screen, and when you start your device at night, the screen does not light up at all.
So what to do if the laptop does not turn on due to the matrix? First of all, you need to make sure that the reason is really in the matrix. It is enough to turn on the equipment and observe its reaction. In this case, as a rule, cooler noise should appear. Next, the speakers will play the sound that appears when you start your laptop. All indicators, lights, keyboard (if LEDs are built into it) will work fully. This is a sure sign that the problem lies in the matrix.
If you have a black screen on your laptop, then another way to check why the laptop is not working is to connect an external monitor. This can be a projector or a TV that supports HDMI connection. If there are no other problems with your equipment, you will notice that a full image appears on the screen of the secondary monitor.
You will ask a question - what to do if the laptop cannot turn on due to the matrix and nothing lights up on it. The only thing we recommend doing is taking it to a service center. You can also reinstall the matrix yourself, but you need to choose exactly the model that is designed to work with your device. It is strictly forbidden to install other matrices - this will not only lead to unstable screen operation in the future, but also can cause problems during assembly. You can check the name of the matrix installed on your gadget on the Internet.
According to statistics, in 30% of all situations when the laptop does not start on its own, the cause is an error in the operating system. This means that one or more of its components have stopped working correctly, in which case you will not be able to run the software.
The symptoms can be very different. The laptop can turn on up to a certain point, and then abruptly turn off on its own. Or it loads but then shuts down. In some cases, it will not start at all, but system sounds from the BIOS will be heard. Having no knowledge in installing new software, we recommend that you again seek help from specialists from the service center. As a rule, it takes several hours to fully reinstall Windows with further configuration. Fulfillment of the order in the service center can take you from one to three days.
A laptop is a complex piece of equipment that can break down at any time. For a successful recovery, you need to first make sure that the reason why it cannot start is correct. If the situation turned out to be relatively simple, you can try to repair it yourself. In the event of a mechanical failure, you will have to seek help from repairmen. Please note that if you independently carry out all the manipulations related to the repair, all responsibility for the possible consequences rests solely with you. It is strongly discouraged to carry out repairs while there is a valid warranty - this will lead to its complete annulment.
