In this article, we will look at possible solutions to the problem when the laptop works but the screen does not turn on. This can happen to every user for different reasons.
We recommend reading our article sequentially, i.e. the first solution, the second solution, and so on, as we have listed them in order of popularity. It is the first solution that most often helps most laptop users.
So, let's see what to do if the laptop works, but the screen does not turn on.
Solution 1
First, you should unplug the power cable if it's still connected. Turn the laptop over and remove the battery from the back. Turn the laptop back to its normal position. Make sure the power cable is unplugged.
Now hold down the power button, hold it for 30 seconds, then release. Next, connect the power cable, but do not insert the battery. Press the power button to turn on the laptop.
Check if the problem has been resolved. If the laptop is working, but the screen still does not turn on, repeat the steps again, but now hold the button for 1-2 minutes.
Solution 2
Connect your laptop to an external monitor or TV via HDMI or VGA port. Then you need to press F8 to sync your laptop with an external monitor. If nothing happens, try the F3, F10 or other keys, depending on your laptop manufacturer.
As a result, you should see the laptop screen on an external monitor. If this happened, then the problem is still in the screen, most likely in the backlight inverter. In this case, you should contact the service center to have it repaired.
Solution 3
The last solution also requires hardware intervention, namely, to check the RAM.
Turn the laptop over and find the module into which the RAM is inserted. Remove the RAM, but do not touch the metal part. Insert the RAM into another slot. Turn on the laptop and check the work. If no change, try moving the RAM to another slot, and check the operation again.
Perhaps this is all that you can do yourself to fix the problem when the laptop works but the screen does not turn on. Otherwise, you should contact the service center for the help of a wizard.
The more complex the equipment, the greater the likelihood of failures in its operation. Laptops are one of these devices.
More than half of laptop owners are faced with unexpected problems in terms of the loss of performance of this complex device, for example, a black screen is displayed when the mobile computer is booted up again.
Failures occur for many reasons, which are often caused not only by factory defects, but also by careless handling of the laptop.
Of course, the problem is most easily solved through specialized service centers, but often the causes of problems lie on the surface itself and are completely fixable on their own.
What to do in case of such a failure?
If, when you turn on the laptop, there is a dark screen, and the user does not have special diagnostic equipment and, moreover, the proper experience, then entrusting the work to the master from the repair center would be a good solution.
However, if you have at least a little experience in handling computer equipment and a detailed guide before your eyes, with specific recommendations for eliminating the causes of errors, the owner of a laptop can not only save a significant part of the family budget (mobile PC repair is an expensive undertaking), but also acquire valuable skills, who will repeatedly come to his aid in difficult situations that often arise with digital technology.
Important digression: All the step-by-step instructions described below are presented only as informational material and do not call for their implementation at all. The author of the manual is not responsible for the careless actions of users.
Unfortunately, not all employees of service centers conscientiously fulfill their duties. There are situations when the owner of a laptop pays a large amount for the elimination of minor problems. For example, after turning on the laptop, only a black square and a cursor may be displayed.
The first thing the wizard will do is disconnect the battery from the device and leave the PC lying until the next day. The next day, after installing all the removed components in place, the laptop sometimes starts to boot up and function normally again.
Of course, the owner of the computer will not be informed about this, but they will simply take money from him for supposedly replacing some hardware component.
It should be noted that the cost of components for laptops has not yet led anyone to sincere delight.
In the absence of problems with the hardware components of the PC, in the vast majority of cases, the user can deal with software problems on his own.
Main causes of failure
Mechanical impacts as a result of careless operation of the device, the presence of liquid on the components and contact surfaces of parts, overheating of the PC due to poor cooling conditions, and much more lead to equipment failure.
Among the most common reasons that the laptop does not boot normally, the following should be noted:
- Incorrect hardware settings;
- RAM malfunctions;
- Battery failure;
- Display errors (matrix or cable may be damaged);
- Problems caused by laptop overheating;
- Video accelerator problems.
If the consequences of the first three reasons can be eliminated at home, then to solve the rest, you will have to give the device for debugging into the hands of an experienced master.
First you need to think and remember what the user was doing with the PC before the failure occurred. It is not uncommon for a loading problem to be affected by some recently installed application or game causing errors in Windows.
Then it will not be difficult to fix the problem by booting into safe mode and rolling back the OS to the resume point. The recovery technique is described in more detail below.
It is also necessary to pay attention to banal things, such as whether there is a power supply to the laptop. Often the device cannot start due to a completely dead battery.
In the case when, after supplying power through the network adapter, the PC started normally, it means that a simple battery replacement is required.
It should be noted that if in early models, for example, Asus and Acer Aspire, access to the battery was very simple and easy even for novice users, then some modern models require disassembly of the case to get to the battery.
You also need to pay attention to the condition of the power cord. It should not have defects, cuts, kinks and crushing.
If, after installing the adapter in a socket on the laptop case, the indicator starts to burn, then this reason must also be excluded and proceed to the next step.
If it doesn’t catch fire, then, firstly, you need to make sure that the outlet itself is working and that power is supplied to it, and, secondly, analyze the condition of the laptop adapter wires.
What should I do if all indicators are lit normally, but the device cannot start? Next, you need to exclude the influence of incorrect hardware settings. This is also easily done by yourself by simply resetting them.
To this end, the following steps must be taken:
In the case when the device still refuses to turn on, then proceed with the recommendations from the next paragraph of this manual.
Display Performance Analysis
In the case when the laptop on its monitor does not show signs of life, and the system unit is functioning, while characteristic sounds are heard, for example, the noise of the cooling system and the operation of the hard drive, then there is a high degree of probability of display problems.
Almost all laptops have a "VGA" socket on the end for connecting an additional screen.
To do this, on some modern models, for example, from Dell, Lenovo and Samsung, an HDMI jack is provided. After connecting an external monitor, you need to try to connect the laptop again.
When the connected screen is able to normally show all the images accompanying the OS boot, and after turning it on you can see the Windows desktop, then the conclusion is unambiguous: the problem is in the laptop display.
Next, you will need to diagnose the reasons for the failure of the screen, for example, check the cable and the matrix. Unfortunately, at home, such an analysis without the availability of special equipment is impossible.
But it’s too early to be very upset, as the points below often help fix the problem.
Therefore, when the owner of the device is sure that the unit is working and you can hear how the fan sometimes starts to rotate, then before contacting the service center, you should proceed to study the further paragraphs of this manual.
Troubleshooting BIOS settings
Often difficulties are caused by incorrectly entered parameters in the BIOS. In order not to waste a lot of time searching for and correcting incorrectly entered parameters, it is recommended to simply roll back the settings to the default state.
It will be convenient for this procedure to use an additional display connected to the laptop, although all actions can be carried out blindly, but with a lack of experience this will be very difficult to do.
To do this, you need to perform just a few of the following steps:
In this case, the text of the line should become white;
- Next, in the menu that opens, confirm your hardness by clicking "Enter" in making a decision;
- Then sequentially click "F10" and "Y" to close the BIOS while saving the entered adjustments;
- After restarting the PC, the standard OS greeting should already be displayed on its own screen.
In the case when there is still only a black monitor in front of your eyes, you can proceed to the steps from the next chapter of this guide.
Troubleshooting possible RAM problems
Difficulties of this kind are often caused due to a malfunction of the RAM, while the module itself is probably damaged, or the problem may appear due to insufficiently tight contact in the slots.
The following steps will help resolve the issue:
Note: this simple measure of removing RAM sticks often helps, since usually the cause of bad contacts is the presence of moisture on them, which can appear there not only when the user spills liquid on the device, but also due to sudden temperature changes and the process of moisture condensation from ambient air.
Especially often people face such a problem in frosty winter, when a mobile PC has to be transferred for a long time at low temperatures.
After the device is brought into a warm room, they immediately begin to start it up, while it is covered with moist condensate from the air not only outside, but also inside.
Procedure for detaching and reinstalling the bars
You need to do the following:
In the absence of a positive result after all the measures taken, if instead of starting the system the user sees only a black screen, then a modern modification of the software from the manufacturer's resource can help.
Installing the latest BIOS version
Having previously specified the name of the laptop up to the last letter, take the following sequential steps:
If the display has a black background with a cursor?
This situation is often encountered by Windows laptop users. The only thing that is displayed on the screen is only an arrow that regularly obeys the mouse, that is, the PC owner can move the cursor over the black field and this is where all the current functions of a modern laptop end.
Fortunately, such a symptom often indicates the health of the hardware component of the machine and you only have to slightly tweak the software component.
The bootloader cannot cope with its functions due to a system failure in one of the many files.
Sometimes even specialists cannot quickly find the problematic file, so it is recommended for the average user to immediately resort to the possibility of harmlessly turning on the laptop to restore Windows to fix the failure.
Secure Boot Procedure
You need to do the following:
Troubleshooting procedure in safe mode
Complete the following steps:
If the problem is caused by malicious applications?
The performance of the OS is often disrupted by viruses, which also cause a black display on a laptop, and it can even turn off spontaneously. Therefore, after restoring the OS, it is necessary to perform a complete analysis of the laptop's memory with an antivirus program.
Troubleshoot using bootable external media
The sequence of steps is:
Conclusion
The methods described above eliminate the failure in the form of a black display, only in the absence of technical defects in the laptop hardware components.
If instrument settings are the cause of the problems, then each user, having shown a share of interest, will quickly fix the problem himself.
The main thing is to pay attention to seemingly small things, for example, whether the cooler starts to make noise inside the computer, or whether light indication appears on the bulbs built into the device case.
If the car does not show any signs of life, then it is better immediately after analyzing the health of the battery and power cords, take the electronic friend to the service center masters.
In this article, the wizard provides tips on diagnosing and fixing common laptop problems. How to troubleshoot why your laptop is not working. What can you fix yourself, and when do you need a specialist? You will know what happened, what it threatens and what needs to be done.
Laptop won't turn on
Your laptop won't turn on. First you need to check the power supply.
With a tester, we check the voltage in the power supply connector in the three-pin connector. We look at the voltage between the central contact and the outer, in the 2-pin between the inner and outer. 
If there is no voltage, or it does not correspond to the nominal value (usually 19V), the laptop power supply is faulty. We just change it.
If there is voltage, then look further at the power connector itself. Is there a short circuit or open circuit. Check if the power button works. If the button is working, then you yourself will not be able to repair it. Take it to service. The power connector is usually destroyed from the inside. It can also only be replaced in a workshop.
If everything is in order with the connector, but the laptop still does not turn on, then the matter is serious. The motherboard is faulty. It can be a multicontroller, a power switching chip. Repair will cost about 6000-7000 r.
Laptop won't boot
A more common malfunction is that the laptop turns on, but the hard drive does not boot. The motherboard does not start at all, there is no image on the screen.
We try to remove the battery and reboot, if this does not help, we try to change the memory. If this does not help, we carry it to the workshop. As a rule, this is due to a malfunction of the motherboard, video card, less often the processor. 
If there are problems with the video card, then we look at whether it is built-in (soldered) or as a separate MXM module.
Some Acer laptops have a separate MXM graphics card. It is unlikely to be replaced, but it will cost about 6,500 rubles. Similarly, with the repair of a video card in Asus and Fujitsu laptops, which may also have MXM video cards. Separate video cards were in some Toshiba laptops.
If the laptop does not have a separate modular video card, then the video card is soldered into the motherboard. It is located in the chipset or processor. In this case, you need to repair the motherboard. Solder the video chip or change the processor.
No image, image problems
If the laptop turns on, it boots up (the HDD activity indicator shows activity), but there is no image. We try to add brightness, switch to an external monitor and back. If it does not help, we carry it to the workshop. Possible malfunctions: video card, matrix, inverter, cable. If the inverter fails, it is still possible to see a very weak image in reflected light.
If the matrix burned out, then there may be such a situation on the screen. No picture, vertical stripes, white or gray screen, partial lack of image.
Lost brightness on laptop
A typical malfunction in a laptop: the brightness is gone, the image is barely visible. This may be a breakdown of the inverter in the lamp matrix, a malfunction of the matrix itself. possible by replacing it. The inverter was used in older laptops, it converted the motherboard's DC control voltage into AC power for the backlight. You can usually adapt an inverter from another laptop as a replacement. But the parameters of this inverter will be different from the original one. Therefore, correct operation is not guaranteed. If you take the inverter from another device, then the effect of brightness swimming may occur. The screen after a while starts to flicker, the brightness floats. Repair of the inverter costs 3000 rubles.
Laptop battery is defective
Due to a faulty battery, the laptop may not turn on at all. If the laptop battery does not work, we look at how long it holds. We find out if the battery controller is working - the board inside the battery.
If the laptop does not turn off immediately after pulling out the adapter, then the controller inside the battery is working. It's just that the elements are worn out and you can buy a new battery for replacement. If the laptop turns off immediately after the adapter plug is pulled out, then it should be taken to the service so that the malfunction can be diagnosed there. Otherwise, you risk - in vain buy a new battery with a working old one.
Possible malfunctions of the laptop battery:
- battery control board failure
- failure of the circuit on the motherboard.
If the controller circuit on the motherboard fails, the battery will not work. Replacing a laptop battery costs about 3,000 rubles.
The laptop may not turn on.
Some laptop devices not working
What to do if faulty: DVD, keyboard, USB ports, touchpad, bluetooth, WiFi.
If the laptop drive does not work, we fix the breakdown by replacing it with a working one. Replacement price 1600 rubles. But if the drive controller malfunctions, you will have to use an external USB drive.
If the keyboard on the laptop does not work, we replace the keyboard in the workshop.
It is difficult to pick up and replace it yourself - you can break the fasteners. In case of breakage of individual keys, it is possible to repair inexpensively, but the work is painstaking. It will be necessary to select the keys according to the fasteners (there are several of them), color, shape, size. 
The reasons for a USB malfunction on a laptop can be two:
- viruses (removal of 1500 rubles);
- the South Bridge on the motherboard burned out - the repair price is about 6000 rubles;
- a short in the USB connector - carefully inspect all USB connectors for breakage and contact closure.
If the touchpad of the laptop does not work, then first we look to see if it is disabled programmatically. Then we try to rearrange its driver. In case of malfunction of the electronic part, we change the entire device in the workshop. Possibly with a keyboard.
Bluetooth doesn't work. Try to enable it first (often it is disabled), then replace the driver. If BT does not work, then buy an external USB bluetooth.
Laptop WiFi does not work, the reasons may be:
- WiFi turned off;
- the WiFi board burned out (we change it in the workshop), the price is 1500 rubles;
Laptop fan not working
In a special dangerous case, when the laptop fan does not work, urgently bring the laptop in for repair. Because overheating is possible, due to which the motherboard will burn out. The most important thing is not to turn it on before repair.
Repair of a fan in a laptop costs 3000-4000 rubles. It can either be repaired or have to be replaced. If the fan rattles, then it most likely needs to be replaced. It is possible that this happened after improper cleaning with compressed air.
As a result, dust clods prevent the fan from turning.
Fan constantly running
If the laptop fan runs continuously, it means that the temperature of important components is high. The cooling system does not cope, because. clogged with dust and urgently needed. Check the processor temperature with the Core Temp program, find it by clicking on the link.
Windows won't boot, program errors
The most unreliable device in a laptop is a hard drive, it is he who breaks most often. most often associated with the replacement of the disk and its repair.
While Windows:
- does not load, writes that some file is not found or is faulty, cannot find a boot device
- reboots
- turns off.
A hard drive usually has a 2.5″ form factor and rotates at high speed. The hard drive heads float in fractions of a micron from the magnetic surface. In the working state, the laptop is better not to touch or shake. You can't even move quickly. This may damage the surface of the hard disk.
Hard disk problems
During impacts, a bounce effect occurs when the heads, bouncing off the surface several times, damage it. Bad sectors must be removed from the user zone, and sectors from the spare are used instead. But all this is up to a certain level, if there is a lot of damage, the disk needs to be changed.
Damage to the magnetic surface can be of different levels. From insignificant to serious, when reading is impossible. This procedure is called remap. The presence of remaps is a bad sign. The disk will not last long and it is better to change it for a new one. Remaps can be viewed in the SMART hard drive. The heads may be damaged if the laptop is dropped or hit hard. These discs are not repairable.
Laptop hard drives are less reliable than desktop hard drives and require more careful handling.
A complex repair of a laptop hard drive is associated with a malfunction of the controller and heads. If the controller is faulty, the disk will not spin up. Or it spins up, but is not recognized by the system. If the disk spins up, vibrations from the engine are heard, that is, there is hope for data recovery. Replacing the controller is a difficult and expensive job. It is useful only when there is very important information on the disk.
Errors in the file system
There are times when errors in the file system prevent Windows from loading. At the beginning, the laptop boots up, but then everything stops, either there is a constant reboot, or an error is generated.
It is necessary to treat the file system for errors.
If your laptop does not work, you can ask a question here.
You can request a repair using the form below. Specify the exact model. You will definitely get an answer.
Laptops have firmly entered the life of a modern person. Like other appliances, they sometimes break. When it stops turning on, you should not panic, but you should find the cause and eliminate it. In most cases, you will be able to restore your computer.
Causes of the malfunction and their solutions
There can be a huge number of reasons why the laptop does not actually turn on. Many of them are quite simple and it will not be difficult to fix them yourself, but with some problems you will have to contact a service center.
Consider the main reasons why a mobile computer may stop starting:
Comment. Very often, when people say that the PC does not turn on at all, they mean that Windows does not boot. This is not entirely correct reasoning, but it is popular among ordinary users.
Nutrition problems
Power-related problems very often lead to the fact that the PC stops starting. Despite the fact that the problem seems to be serious, in most cases it is quite easy to diagnose and fix it at home.
Main power problems:
- incorrect adapter connection;
- damage to cables and connectors;
- battery failure;
- failure of the power supply;
- problems in the supply chain.
Often with such problems, the laptop power indicator does not light up. First of all, you should check that the power supply is connected correctly and that it is plugged into the outlet. It is worth noting that even very experienced users can forget to connect the PC to the network. As a result, after the battery is discharged, the device stops starting.
Damage to power cables and connectors can be caused by a variety of reasons, including careless handling or pets chewing on the wire. You can check this malfunction using an external inspection.
Another very common malfunction is related to the battery. In some cases, if it does not work, then the PC stops turning on even with the network adapter connected. Usually, after pressing the power button, even the cooler does not work. Therefore, it is worth trying to run a mobile computer on mains power without a battery.
The power supply fails quite often for any device. Without a charger, the laptop battery will run out sooner or later, after which the computer will stop turning on. Checking if the network adapter is working is very simple. It is enough to connect another charger from a known good computer.
Many power supplies are equipped with an indicator. Even if the light is on, it is impossible to completely exclude problems with the network adapter. It is worth noting that there are a lot of power supplies for laptops. Only adapters suitable for a particular model should be connected to a computer.
Problems associated with a malfunction in the power circuit are much less common, but they are more serious. In this case, it will not be possible to independently diagnose and even more so fix the problem. You need to contact the specialists from our service center. Leave a request and you will be called back within a few minutes.
Faulty hard drive
The hard drive stores all the information and operating system of the computer. If it malfunctions, the computer can be turned on, but it freezes before the Windows splash screen appears. In some cases, an HDD error message may be displayed, for example, information that the disk is not a system disk.
In any case, the user still has the opportunity to enter the BIOS SETUP menu. There you can check whether the hard drive is detected and whether the settings are correct. If the hard drive is visible, then you can start the system from a boot disk or flash drive and test it.
Failure of the video card and chipset chips
Notebook components may also fail. The reasons for this may be overheating, damage due to impact, and so on.
Consider which details most often create problems with turning on a PC:
- south bridge;
- north bridge;
- video card.
The behavior of the computer in this case can be very different. If the video card is out of order, then the image will be absent, but the fan will work and sometimes even Windows will boot, making the appropriate sound. If one of the bridges fails, the computer may not turn on at all or stop before loading the OS.
It is almost impossible to determine the reason in this case on your own. And trying to repair at home is likely to only hurt. Therefore, it is better to use the services of a service center.
Video: The laptop does not turn on. Board diagnostics.
Other reasons
In fact, the malfunction may lie in a number of other problems. Among which are the following:
- processor or memory damage;
- broken BIOS firmware;
- overheat;
- errors in Windows.
If the PC beeps when turned on, then in most cases this indicates overheating or problems with the RAM. If you have little experience, you can try to find out on your own why this is happening. To do this, you must first remove the dust. If the problem persists, you can replace the memory modules with known-good ones.
A broken BIOS firmware may result from an incorrect update. If the user tried to perform this operation before the problem occurred, then you will have to contact for repair.
BIOS configuration errors are also often encountered. It is very easy to solve this problem yourself by simply going to the SETUP menu and loading the default settings, for example, by selecting the Load Setup Defaults option.
Errors in the operation of Windows can lead to the fact that the OS does not start. First of all, you need to find out their cause and try to solve it. In addition, you can try reinstalling the operating system or restoring a factory installed one.
Laptop won't turn on at all
Very often, the laptop does not turn on at all due to power problems. But ? The power button lights up after pressing it and nothing else happens. We'll have to find the cause and eliminate it.
Typical actions due to which the laptop stops turning on:
- dust cleaning;
- update;
- overheat.
If errors were made during the cleaning or updating process, then the behavior of the computer can be very different. Including there may not be a start at all. In addition, the system may not turn on due to problems with the hard drive and after overheating.
After cleaning
There are situations when, after cleaning, the laptop stops turning on. This may start the fan or make a squeak. On some models, the indicators also start flashing.
Cleaning a laptop is associated with its disassembly. The first thing to do is to disassemble it again and check the connection of all components, as well as the installation of the cooling system. It would be useful to pay attention to the thermal paste and the health of the tubes that serve as a heat sink.
If during the cleaning process the RAM modules were removed, then you should try to remove them again, clean the contacts and reinstall them. It is also necessary to check whether the laptop starts with the hard drive and optical drive disconnected.
When re-disassembling, it is worth paying attention also to the sensor for opening the lid (display). If not very carefully assembled, it may be out of place.
If the implementation of simple tips did not lead to results and the device still does not work, then you should contact the service center. It is possible that the components were damaged by static electricity during disassembly or some other problem occurred.
After update
Problems may occur during the update. If updates are installed incorrectly, this may cause the computer to stop turning on.
In this case, the user can install a new version of the BIOS, drivers, or patches for the operating system.
The most difficult case is the inability to start the computer after updating the BIOS. This happens when the user tried to interfere with the process, for example, by restarting or turning off the computer during it, or when using unofficial firmware.
Of course, resetting the settings to default will not be superfluous. This can be done by removing the battery for a few minutes or by closing the appropriate jumper on the motherboard. But as practice shows, this probably will not help to fix the problem. The only way out is to contact the service center for repair.
In a situation where errors started after installing driver updates or Windows, you can simply roll back to the previous restore point from safe mode, reinstall the operating system, or return to the state that was when you bought it, if such a function is available in the model.
Faulty hard drive
Usually, when a hard disk fails, it starts up, but the system simply hangs on the manufacturer's logo or displays information that the disk is not a system disk or is damaged.
If the hard drive is detected in SETUP, then you can independently diagnose it by booting from removable media and running a specialized utility, for example, Victoria. If the worst fears are confirmed or if the device cannot be detected in the BIOS, you need to check the cable.
In extreme cases, you need to replace the hard drive yourself or with the help of our specialists, to do this, click the "Request a call" button.
After overheating
Modern computers generate quite a lot of heat during operation. In case of severe dustiness or a malfunction of the cooling system, overheating may occur, after which some parts may fail. As a rule, it is impossible to solve the problem on your own, you will have to contact the service center for this.
The main parts that can fail as a result of overheating:
- CPU;
- video card;
- HDD;
- north and south bridges.
Spontaneous shutdowns
In some cases, the computer may turn on and even work normally for a while. After that, a spontaneous shutdown occurs. There are several main reasons for this.
Let's consider typical problems that lead to the device turning off without instructions from the user:
- overheat;
- parts failure;
- viruses;
- software errors.
Overheating is the most common cause of arbitrary shutdowns and reboots of mobile PCs, which can later lead to device failure. In order to avoid this, it is necessary to regularly remove dust, and also occasionally change the heat-conducting paste.
Malfunction of parts very often also occurs due to overheating. If there were no regular cleanings, then the likelihood of this is high. Solving such a problem on your own will not work. Therefore, it is worth contacting our specialist immediately.
Viruses can lead to incorrect operation of the system, as a result of which the PC may turn itself off. To solve it, you need to download special utilities from the Doctor Web site or Kaspersky Lab, perform a full scan and remove threats.
Software errors also often lead to an arbitrary shutdown of the laptop. You need to find the cause using the code that appears on the screen at the time of the failure. After that, the problematic application should be uninstalled or try updating to the latest version.
Checking for battery problems is quite simple. You need to remove it, connect the charger and start the laptop. If the glitches are gone, then you need to replace the battery.
Turns on but...
In some cases, the PC may turn on, but the download will stop at a certain point. In this case, error messages may appear on the screen. In some cases, Windows does not start, in others it even fails to initialize.
Failed to initialize
Initialization occurs at the time of PC startup before switching to Windows boot. If the indicators light up, the cooler turns on, but there is no access to the hard disk (the corresponding light does not light up), then with a high probability initialization failed.
Possible reasons why the laptop may not initialize:
- malfunction of the processor, memory or video card;
- incorrect BIOS firmware;
- defects or damage to the south or north bridge.
Regardless of the reason, you will have to carry the PC to a service center. Only a specialist with the necessary equipment in this case will be able to accurately determine the cause of the problem and eliminate it.
Windows won't start
The inability to start Windows in most cases does not indicate a hardware problem. Therefore, you can try to reinstall it, roll back to the previous state of the PC, or use the recovery tools from the manufacturer.
In hardware, most often the inability to boot the OS is due to hard drive problems. In this case, it will have to be replaced. You can first try to diagnose with special utilities by booting from removable media.
There are a lot of options for laptop malfunctions. You can diagnose and eliminate many of them yourself at home, but in case of a serious breakdown, you will still have to contact the specialists of our service center.
Even experienced computer users often encounter problems with their laptops. If you are wondering why the laptop does not turn on, the first thing to do is to find the reason. Sometimes the device does not activate even due to power outages. In this article, we will talk about the most common reasons for the absence of signs of life in laptops.
2 Signs of a broken laptop
Most often, users say that the laptop does not turn on if nothing happens after pressing the power button. Sometimes the operation indicator may light up, but then the screen does not activate. Consider the most common signs of a laptop failure:
- The battery is charging, but the computer does not respond to button presses.
- The launch occurs, but is immediately interrupted.
- The laptop turns on, but not completely, stopping the download at one of the stages. Most often, the fan starts to work in the device, but the start does not continue further.
- The device constantly boots, and upon completion of the process, a reboot begins.
It is important to know the exact description of the problem, because if you do not know about it, you will not be able to tell repairers or users of technical forums about it. The accuracy of the answers to your request directly depends on the description of the situation.
All of the symptoms listed above are signs of hardware problems, as they occur even before the operating system boots. There should be no inscriptions on the screen at this moment. If the system boot logo appears on the monitor, then the cause of the problem, most likely, lies precisely in it. Next, we will consider methods for solving problems associated with the hardware of the device. If the manipulations do not bring anything, it is better to contact the service, where specialists will help you.
2.1 The laptop does not respond to the power button or immediately turns off
This can happen for several reasons:
- No voltage at the outlet.
- The battery charge is too low to turn on normally.
- Your device's power supply is defective. Sometimes it breaks due to a damaged cable. Even if the energy has insufficient power, the computer may not work. If we are talking about a “non-native” power supply, then simple incompatibility in some parameters often becomes the cause of problems when turned on.
- Elements of the internal power circuits may also be faulty, which will prevent the laptop from turning on.
- Short circuit in system boards or power circuits.
- Insufficient contact between boards.
- Lower battery voltage for BIOS.
- Problems in the BIOS firmware.
Solution
- First you need to make sure that the laptop power supply is plugged into a power outlet. Many users often forget to control this, which is why they begin to worry.
- Next, disconnect the external power supply from the devices and remove the battery from the laptop. Press the power button with your finger and hold it for about 30 seconds. This will remove residual charges from the containers. Most of the time this solves the problem.
- If this does not help, then unscrew the bolts on the laptop case and remove its back cover.
You can only do this if you are confident in your abilities and skills. It is also worth remembering that the device may be under warranty. If you deform the fillings, it will be impossible to restore them. Because of this, your device will not be accepted for warranty service.
- Remove the motherboard from the case and inspect it carefully. If there are burnt elements or black tracks, a short circuit has occurred. If you find these signs of a malfunction, immediately contact the service center, as you can only make things worse.
Consider the most common signs of a short circuit:
- When you press the power button, the cooler makes a few turns and stops. It can also start working, but after a short pause, this also indicates a certain malfunction.
- The power supply indicator turns off when plugged in. Most laptops use this method to protect against overheating or overload. Due to the short circuit in the entire device, the resistance decreases, as a result of which the current strength increases. This causes the power supply to shut down if overload is in danger.
- Another symptom of a short circuit may be heating of the elements. After connecting the power supply, check the temperature of the boards and tracks. If you find warm places, then there is most likely a short circuit near them. After that, you should immediately contact the service center.
If you do not find signs of a short circuit, then you should continue to inspect the device.
- All internal connectors and contacts must be checked for reliability. Often a similar problem occurs during the installation of new parts or cleaning the device.
- If this does not help, reset the BIOS settings. This can be done by disconnecting the battery for about 15 minutes. On some laptops, it is soldered, which makes it impossible to manipulate.
- It is also recommended to replace the BIOS battery for prevention. If the voltage on it has dropped below 2.8 volts, you should definitely do this. Sometimes this can be difficult, since in modern laptops the battery is often fastened to the connector. If you are not sure that you can replace it yourself, it is better to contact the service center.
- To check the BIOS, turn on the laptop without RAM. The system will make itself known by a short beep if it is active.
- If you took the processor out of the laptop, check the health and integrity of its legs.
- You can try to run a laptop with a minimal body kit. Leave only the processor, one RAM module. Instead of a laptop monitor, connect an external one. If the device starts, then the problematic part is not involved in the circuit. If the problem persists, then it is in the motherboard, processor or RAM.
2.2 The laptop does not turn on, but the battery is charging
In this case, there may also be several reasons for the problem:
- Flashing the BIOS firmware.
- RTC battery.
- Multicontroller (EC/KBC controller) and its binding.
- On older machines, the south bridge may break. Sometimes the platform hub fails.
- RAM.
- Lid closed or sticky keys sensor. Your laptop will think that the lid is closed, and therefore will not allow the system to start, constantly going to sleep.
If you decide to check the device yourself, then use the same recommendations when testing new elements. It is best to contact the service center, because in the absence of the appropriate skills, you can simply damage the laptop.
2.3 Cyclic reboot immediately after power on
A sign of this problem is that the cooler starts to spin actively, but at one moment it stops and starts again. The cycle of starts and stops will continue indefinitely as long as the device is powered.
Most often, the problem with constant reboots is due to problems in the BIOS. Sometimes this can also be caused by broken or incompletely inserted RAM into the slot. You can resolve the issue by flashing the BIOS or replacing the RAM.
2.4 "Unpowered" or no initialization
This situation is similar in features to the previous one, but additional problems may arise when solving it. In particular, the cooler will constantly spin, stopping only for a certain time. This means that the loading of the operating system does not reach the start of the initialization process.
In such cases, you need to determine at what stage the laptop starts loading again. If there is a problem with the monitor, you will be able to hear how the hard drive starts to work. In addition, you may sometimes notice Windows startup signals. Even before initialization, the cooler will be limited to maximum speed and constant restarts. In this case, the drive will not start.
The reasons for this are:
- Problems in the BIOS.
- Broken RAM.
- Broken processor and its power.
- Lack of communication between the processor and the motherboard.
- Broken northbridge (in old laptops).
If the problem lies in the breakdown of the board elements, then it can be solved by replacing the faulty gadget. You can also update the BIOS on another processor.
3 Conclusion
- Initially, you need to determine the signs of a breakdown by carefully studying the process of turning on the laptop.
- After that, try to find out why the laptop does not turn on.
- If the problem is in the software part of the OS, then just reinstall it.
- If you find a malfunction in the hardware, then take the device to a service center.
- Do not open the case if your laptop is under warranty.
- Disconnect all batteries if you find a short circuit. Being energized can cause other hardware failures.
- Change the battery and reinstall the BIOS, which can solve the most common problems.
- Start investigating the problem by checking that the laptop's power supply is plugged into an outlet.
4 Expert opinion
“Remove the battery and be sure to turn off the power supply from the network. The computer should be diagnosed at least once a year, so you can be aware of the problem parts. If everything is OK with the power, then check the battery. When the cooler buzzes, you will most likely have to disassemble the device, so just take it to a service", - writes an Internet user Cyril.
