My laptop burned out, what should I do? The laptop does not turn on - problems with the BIOS or hardware errors. Faulty motherboard and does not turn on the laptop

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If the laptop turns off and does not turn on, then often all standard attempts to start it do not bring the desired result. In this case, there is no reaction to pressing the power button, the screen does not light up, all the lights go out (in some cases the battery indicator lights up), the noise of the cooler is not heard and the BIOS beeps do not sound, accompanied by which the operating system usually starts. The presence of the above symptoms is a compelling reason to contact a specialist.

The engineers of the A-Iceberg Service Center quickly eliminate breakdowns of any level of complexity in one visit, regardless of the make and model of the laptop. All work is performed in-house using modern equipment and high-quality consumables.

Why doesn't my laptop turn on after a sudden shutdown?

If the laptop turns off and does not turn on, the technician decides what to do and how to diagnose it according to the generally accepted algorithm for eliminating the causes of the following malfunctions:

lack of voltage in the electrical network or damage to the integrity of the power cord
power supply failure
power connector failure
battery failure
short circuit of the north and south bridge chips of the motherboard, malfunction of its power controller
BIOS malfunctions

Specialists of the A-Isebrg Service Center will conduct a detailed diagnosis of the hardware and system parts of the laptop, repair or replace the power connector, power supply, battery and motherboard. All faulty components are replaced with original certified spare parts.

Troubleshooting

1. The device shutdown could be caused by voltage fluctuations in the electrical network or battery discharge due to lack of power. Plug your laptop into a different outlet or use a multimeter to measure the voltage. If its value is below 190 V or above 250 V, then the problem has been found. The network cable or wiring leading from the power supply to the network adapter may be damaged. In this case, the technician will replace the power cord and worn-out wiring.

2. If the power adapter indicator does not light up, and when you connect a known good secondary power source, the laptop turns on, then repair or replacement of the power supply is necessary. Based on the cause of the breakdown, the technician will replace the mains fuse, disk thermistor, power transistors or diodes of the diode bridge (they could have broken or shorted). In most cases, failure is caused by swelling or oxidation of capacitors, the replacement of which brings the power supply back to life.

3. If the power connector is faulty, then it is simply impossible to charge the battery or work from the mains. It is not practical to repair the connector, so the technician will replace it by following these steps:

disassembling a laptop and removing the motherboard
unsoldering the board's power connector using a hot-air soldering station
removing old solder using braid
soldering the new connector to the motherboard contacts using high-quality gel flux
cleaning contacts from flux residues
reassembling the laptop in reverse order

Advice! To prevent a spark from wearing out the power connector, plug the power cord into the outlet only after connecting the plug to the connector.

Note! Prolonged operation of the device with a faulty power connector can cause burnout of part of the motherboard and its power circuit.

4. Try removing the battery and connecting the laptop directly to the mains. If the device turns on, then the reason lies in the battery failure. The technician will repair it, which includes replacing batteries, temperature sensors and a temperature fuse that opens when overheated. If the laptop turns off when the battery is 60-65% charged, then it needs to be calibrated.

5. A short circuit in the microcircuits of one of the bridges of the system board or a breakdown of its power controller can cause the laptop to suddenly shut down. The device will not turn on until a specialist replaces the damaged electronic components of the north and south bridge chips.

6. The only non-hardware reason for a laptop to spontaneously turn off and then refuse to turn it on is the presence of BIOS errors. The BIOS update procedure involves installing new firmware (compatible with the motherboard model) using a special utility. This will help eliminate critical errors and significantly improve laptop performance.

Carefully! An unprofessional BIOS update (incorrect installation or incorrectly selected firmware version) often causes damage to the motherboard.

Why you can’t do without the help of a specialist

Only an experienced specialist will be able to perform high-quality laptop repairs and replace spare parts without damaging the expensive electronic hardware. Independent troubleshooting in most cases provokes the final loss of functionality of the device or failure of its main components.

Professional repairs, carried out in strict accordance with the manufacturer’s recommendations, will be the key to long-term and uninterrupted operation of your equipment. Trust the specialists of the A-Iceberg Service Center, and today your laptop will be in full working order. A warranty card is issued to confirm the quality of the repair. Leave applications online on the website or by phone

The difficulty of repairing all-in-one computers, in particular laptops, is that the replacement of individual functional modules is not provided. Therefore, the average user can do little to restore the functionality of the equipment.

If you carefully study the situation, it may well turn out that the reason is quite trivial and can be solved without the involvement of specialists from the service center. Therefore, first you need to take a closer look at what is happening and how exactly the Asus laptop does not turn on.

External problems

First, external obstacles to normal operation are looked for.

If peripheral devices, a printer, a fax are connected to the computer, or cable connections are made, a malfunction of the connected equipment may cause the laptop to not work.
Disconnect all external connections. At the same time, during the disconnection process, carefully inspect all connectors.
Damaged or torn contactors, dirt, dust, bent contacts - all this can prevent the device from turning on.

One of the most common reasons for an Asus laptop not turning on is careless handling of the computer. When moving it with the power supply connected, it is very easy to damage the rather thin, vulnerable connecting terminals or break the wires. In this case, it is necessary to replace the connectors or connecting cables.

The laptop may not turn on immediately after being exposed to low temperatures for a long time. According to the instructions, after bringing the PC into the room from the cold, you must wait at least two hours before trying to turn it on. In a warm room, condensation and moisture may appear on cold parts, which will lead to a short circuit and failure of the electronics.

Power problems

If the battery has not been infected for a long time, the charging progress indicators will light up when you turn it on again. But the device itself will not turn on - there is not enough charging power. In this case, you need to wait a while to replenish the electricity reserves in the laptop battery.

If no indicators light up, you need to check the presence of current in the sockets and the correct connection of the power supply. Are there any external damages in the wires? Are contact groups intact? If possible, it would be a good idea to check the power supply by replacing it with a known working one.

Asus laptop turns on and off quickly

Most often, the device turns off immediately after trying to turn it on due to a malfunction in the cooling system.

A lot of dust has accumulated in the case.
Coolers are faulty.
Dust completely clogged the radiator grille.
Thermal paste, necessary for normal cooling of electronic components, has dried out.

Less commonly, a short circuit in the north or south bridge or a faulty video card can cause the computer to turn off immediately after turning it on. Short circuits in electronics often occur due to liquid spilled on the keyboard. Although the moisture was quickly removed, a few drops may have leaked inside and this will inevitably lead to a short circuit and malfunction. If the PC was accidentally flooded with water, tea, wine, you must immediately turn off the power, remove the battery and return the device to a service center as soon as possible for drying and checking its functionality.

The lights are on, the fans are noisy, but the laptop won't start.

The device seems to have turned on, the noise of the fans rotating is heard, but the screen does not light up and the HDD indicator does not blink.

Violations in the BIOS firmware.
Problems with memory or processor.
The north bridge of the motherboard is faulty.

Laptop starts loading BIOS and then shuts down

Or it reboots over and over again. In this case, the following problems are possible.

The south bridge is overheating. Most likely due to a short circuit. Usually such a malfunction is preceded by some kind of problem with the USB.
The processor overheats due to accumulated dust and incomplete contact of the radiator. In this case, you can hear the noise of the cooler operating at high speeds.
There is no power from the external unit, and the internal battery is very discharged. The laptop has enough energy to start, but not enough to work.

The laptop turns off when loading OS Windows

If the computer turns on, the BIOS goes through all the stages normally, and when the operating system starts up, crashes begin and the boot is interrupted - there is a high probability of problems with Windows or a virus infection has occurred. The simplest solution is to roll back to factory settings or completely reinstall OS Windows. As practice shows, after violations in the registry or damage to system files due to viruses, it is almost impossible to find the true cause of the problem and it is easier to reinstall Windows. In mild cases, simply rolling back the system to one of the previous states helps.

Laptop does not work on battery

When plugged into the network, the external power supply of the laptop turns on, but the internal source does not want to work. The following problems are likely here.

No battery, bad contacts. Contacts may become damaged if the computer is dropped or severely shaken.
The battery is faulty and therefore will not charge. The battery does not charge due to a faulty external power supply or damaged connectors.
Faulty internal power supply.

As you can see, there is very little that can be done at home to repair a laptop.

If your laptop screen does not turn on, then the first thing you should try is to reset the hardware settings. If this does not help, then you will have to look for other causes of the problem, which may be so serious that you cannot do without a trip to the service center.

Reset

A hard reset helps in most situations where the screen does not work. To execute it:

Disconnect the charger from the laptop.
Remove the battery from the laptop.
Remove any residual charge and reset the hardware by holding down the power button for 20-25 seconds.
Place the battery back into the laptop and connect the charger.

If a window appears asking you to select a boot mode after an incorrect shutdown of the device, select the normal Windows startup.

Checking the laptop display

If after resetting the hardware settings there is still no image on the screen, then try to determine which component has failed: the video card, matrix or other part of the display. An external monitor will help you do this. For example, on the ASUS website in the support section it is recommended to do the following:

Connect an external monitor to your laptop using the existing interface - HDMI or VGA.
Turn on your laptop. Using the combination Fn+F8, select broadcasting the image through the connected monitor.

If no image appears on the external screen, then the problem lies in the operation of the video card. This is also true for laptops from Lenovo, Acer and other manufacturers. If the picture is displayed on the monitor, then you should further look for a problem in the laptop display. The check should be carried out if the laptop's fan is noisy, the indicator lights up, or there are other signs that the laptop is turning on. If there is nothing like that, then perhaps the problem is not in the display - the entire laptop is not working.

Resetting BIOS Settings

If the problem occurs after changing the BIOS settings, you can try rolling them back to the factory state. Using a keyboard to do this will be problematic, but possible. The BIOS has hotkeys that are responsible for performing certain functions. A factory reset is usually done using the F9 key.

In theory, you can enter the BIOS by pressing the Delete key, then reset the settings (F9) and save the configuration (F10). But in practice, there is a high probability of missing the right moment, so it would be wiser to reset the settings by removing the CMOS battery, which stores the BIOS settings.

The main disadvantage of this method is the need to disassemble the laptop. But you will be sure that the BIOS settings have been reset, and if the cause of the black screen was incorrectly set parameters, the problem will be fixed.

Reinstalling the RAM stick

If the problem occurs after cleaning the laptop, then you should disassemble the laptop again and make sure that you installed all the modules correctly and connected the necessary cables. Therefore, for proper disassembly/assembly of a laptop, it is recommended to use the manufacturer’s manual - then the likelihood of an error occurring is significantly reduced.

In some cases, reinstalling the RAM strip can help solve the problem of no image on the laptop screen. This is especially true if liquid was spilled on the laptop’s keyboard, or it was left in a damp room for a long time, after which malfunctions occurred.

After reassembling the laptop, try turning it on again. If the black screen remains, although the laptop turns on and continues to work without an image on the display, then contact a service center. Possible causes of the problem:

Damage to the display cable.
Keyboard short circuit.
Inverter failure.
Backlight lamp failure.

These faults are unlikely to be resolved on your own; qualified assistance using special tools is required. The worst thing that can happen to a laptop is the motherboard failure. But then he will not show any signs of life. In any case, diagnostics at a service center will reveal the exact cause.

Problems resuming from sleep mode

If the screen remains black when resuming from sleep mode, the first thing you should do is check your video card drivers. The software must be the latest version and suitable for the system. You can download the latest drivers on the laptop manufacturer's website.

In some cases, the problem is caused by input devices that do not support Windows sleep mode correctly. Exiting sleep is done using the touchpad (mouse) or keyboard. If an external device is connected, it may block the laptop from waking up. To fix this flaw:

Save the configuration by clicking "OK". Do not prevent the mouse and keyboard from waking up the laptop at the same time, otherwise you will not be able to wake the computer from sleep. Set the ban on both devices in turn, checking if there is a positive effect.

Laptop overheating

If the screen on your laptop goes blank during operation, then most likely you are faced with overheating of the equipment. First of all, you should check the temperature of the video card. Use the free Speccy utility for this.

If you see that the video card’s temperature is too high (you can see the maximum permissible value in the specifications on the manufacturer’s website), then you should check the laptop’s cooling system. Sometimes just cleaning the cooling system is enough, but if the installed coolers are not powerful enough, then try using a cooling pad or installing more powerful fans.

If the laptop does not turn on, this may indicate a serious malfunction. The causes of such a breakdown can be both software and hardware failures. In the first case, you can correct the situation without disassembling the laptop and physically interfering with the system components. The second option requires a more serious approach and, in some cases, repair or replacement of one or more computer elements.

Why doesn't my laptop turn on?

Before examining in detail how to troubleshoot the problem, it should be noted that a problem with turning on a laptop can arise for a number of reasons.

The most common factors causing malfunction:

failure of the power adapter and, as a result, complete discharge of the battery;
failure of the connector or power cable;
damage to the battery or the connector into which it is connected;
failure of the RAM board or disruption of its contacts with the motherboard;
video card failure;
damage to the north or south bridge of the system card;
BIOS failure.

What to do if the laptop does not turn on

Depending on the nature of the malfunction, methods for solving the problem differ. Determine which type of failure occurs in your situation and act accordingly.

The laptop does not respond at all when pressing the power button

In most cases, this behavior of the laptop is a sign of failure of one of the batteries.

The initial process for diagnosing a power system is as follows:

check the voltage in the surge protector, connect the power adapter and pay attention to whether the indicator on it lights up (if any);
make sure that the power indicator on the laptop lights up;
disconnect the wires, remove the battery, and then reconnect the power adapter and try to start the laptop.

If nothing happens when you connect the power (no indicators light up), then the cause of the breakdown lies in the power adapter or in the charge connector on the laptop itself. Inspect the cable for damage. If possible, test the laptop's performance with a different power supply.

If performance returns after removing the battery, then that is where the problem lies. In this case, it needs to be replaced or repaired.

Perhaps this is all that can be done if the above-described signs are present on your own without the use of special tools. Keep in mind that the cause of such a malfunction can also be a failure of the motherboard or damage to the internal power controller.

The laptop starts and immediately turns off

This behavior at best means poor performance of the cooling system, and at worst indicates a serious hardware failure.

In the first option, it is necessary to clean the inside of the computer and possibly change the thermal paste. But if this does not help, then most likely the south bridge of the motherboard has burned out.

Keep in mind that you can’t do this without the help of a specialist.

Startup occurs, coolers work, but the screen does not light up

First of all, check whether the laptop's screen backlight is turned on. It is usually activated by pressing the function keys.

If nothing happens, shine a flashlight on the computer screen. The image is visible - the backlight has burned out or the inverter has failed.

Other common causes of this malfunction are:

failure of the video card;
damage to the screen matrix or its cable;
North bridge malfunction;
broken BIOS firmware.

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Laptop manufacturers take into account the fact that the devices they supply are high-tech and the likelihood of malfunctions in their operation is quite high. That is why almost all laptops are equipped with simple diagnostic tools for quickly finding and identifying faults. Moreover, in most cases, the user can restore the device’s functionality independently. The most difficult thing is to establish the original cause of the failure. How to determine why the laptop does not turn on and what can be done in this situation?

The laptop does not turn on - find out the reasons

Many modern laptops are equipped with a basic I/O system (the exception is Chromebooks, which use a less functional “bootloader”). This is the so-called BIOS; some models use an add-on over it - UEFI (essentially the same BIOS, but with a more convenient and colorful menu). What it is? This is a small firmware that is “hardwired” into the motherboard. Its main purpose is to scan all devices connected to the board and diagnose them.

In most cases, the user can restore the device's functionality independently.

What happens when the user presses the power key? A startup signal is sent to the BIOS. It, in turn, scans all connected equipment (determines the brand and type of processor, the amount of installed RAM, the model of the video adapter, the model of the north and south bridges, tests the operation of the display, the presence of a network interface, keyboard, mouse, touchpad, etc.) . If the BIOS does not find any errors, it searches for the bootloader on the hard drive and, if found, transfers control of the device to it. Next, Windows starts to start (or another installed OS - Linux, MacOS, Android, BSD, etc.).

From the above we can conclude:

if at startup the user sees the manufacturer’s logo, and then the OS starts loading, then the BIOS has carried out diagnostics and found no faults with the installed hardware;
if the OS does not start loading, but a service message is displayed on the display, this indicates either a missing or damaged hard drive, or that the diagnostics have not been completed - one of the components is not working correctly;
if there is no response to pressing the power button, the BIOS does not receive a startup signal, which indicates a problem with the power system.

All this allows you to determine the type of problem due to which the laptop does not start. They are conventionally divided into:

Software (system). When the error is caused by a software failure, but the equipment is working properly.
Hardware. When the error is caused by a malfunction of any equipment connected to the motherboard.

It is by determining the type of error that you should begin diagnosing the breakdown in order to understand why the laptop does not turn on. The simplest rule:

if there is a reaction to pressing the power button and the noise of the fans is heard, this is more likely a software failure;
if there is no reaction at all to pressing a button (including the lighting of the LED indicators), this is most likely a hardware error.

The user can deal with almost all software errors independently without contacting a service center. With hardware, things are somewhat more complicated, and it is not always possible to do without the help of a qualified specialist.

Diagnosis and elimination of software errors

First of all, it’s worth clarifying that BIOS is also a kind of operating system, although its functionality is quite small. And malfunctions in the operation of this OS also often occur, so its operation should be diagnosed. Other common software errors may include:

OS bootloader corruption;
damage to system files or the OS kernel;
failure of software hardware drivers (most often, graphics adapter drivers “fail”).

BIOS problems

As a rule, in such cases, the laptop starts and displays a service message about problems. In some cases, the image does not appear at all. The easiest option to eliminate BIOS problems is to reset its settings to factory settings. To do this, you need to find a CR2032 battery on the motherboard and remove it for a few seconds (then be sure to put it back). This turns off power to the volatile CMOS memory, where the BIOS settings are stored outside of the BIOS. In most laptop models, this battery is located immediately under the bottom cover or under the keyboard - information should be clarified in the service documentation (or just watch a video on disassembling a specific laptop model). If resetting the BIOS settings does not fix the startup problem, you should check the operation of the hard drive and OS.

You need to find a CR2032 battery on the motherboard and remove it for a few seconds

Problems with the graphics accelerator driver

The video adapter driver is responsible for its correct operation in the environment of the installed operating system (Windows, Linux, MacOS, and so on). If there is a problem with its operation, the image may simply not be displayed on the display (or it will disappear during the OS loading stage). How can I check if the driver is working? There are two options:

connect an external monitor;
start the OS in “Safe Mode”.

An external monitor must be connected via a VGA, HDMI or DVI output, depending on the specification of the laptop. The connection must be made with the monitor and laptop turned off, otherwise you can damage both the display and the graphics adapter.

Press F8 and select "Safe Mode"

If connecting an external monitor does not bring any results (that is, the image does not appear on it), then you should try starting the OS in “Safe Mode”. For this:

When you turn on the laptop, press the F8 key;
after a list of boot options appears, select “Safe Mode”.

If we are talking about a laptop with Linux installed, then you need to start it with the “nomodeset” parameter (enter this line in the GRUB parameters by pressing the “E” key).

As a rule, when loading in “Safe Mode”, the driver built into the OS is used, so the monitor resolution, as well as its color palette, will be “default”.

If the OS loads successfully in “Safe Mode,” you will need to manually remove the installed video adapter driver and install a compatible one (by downloading it from the manufacturer’s website or taking it from the disk that came with the laptop).

If, when you try to start, an error is displayed about the absence of a bootloader, this indicates a damaged record in the MBR or GPT directory of the hard drive, where information about the installed OS and a short algorithm for launching system files are stored. Most often this happens due to simple wear and tear of the hard drive or damage to system files when the laptop is turned off incorrectly (when the battery was removed during operation or the power adapter was disconnected).

How to fix the problem? The first step is to try to restore the bootloader using the built-in OS tools. But this will require an installation disk or flash drive with Windows. So, to restore the bootloader you will need:

when starting the laptop, press the F11 key (in some models - F12, F2, Tab);
from the list of devices that appears, select a disk or flash drive with the Windows installer;
wait for the installation menu to appear and select “System Restore”.

After this, the installer will try to independently detect a problem with the OS installed on the hard drive and fix it. In case of trivial damage to the MBR or GPT, this helps. If, after automatic diagnostics, a notification appears that the program was unable to restore Windows boot, then this indicates damage not only to the boot loader, but also to system files, the kernel and the Windows partition. In such cases, only reinstalling the operating system will help.

To solve the problem you will need an installation disk or flash drive with Windows

It is also worth paying attention that the error about the absence of an OS (Operation System not found) may indicate that the main boot device is not a hard drive, but, for example, a floppy drive or a USB flash drive inserted into the USB port. To fix this error you will need:

when starting the laptop, press the F11 key (to access the boot menu);
select a hard drive as the boot device (as a rule, this line should contain the designation HDD, SATA or ST).

If the laptop has 2 hard drives (many “gaming” laptops have both an SSD drive and a traditional HDD installed simultaneously), then you should boot from each of them one by one.

Reinstalling the system

This is the most drastic, but at the same time the most reliable option for eliminating software errors in the operating system. You should use it if the bootloader cannot be restored. For this you will need either an installation disk or a flash drive with Windows. You can download a trial version of Windows (with a trial period of 30 days) on the official Microsoft website https://support.microsoft.com/windows. There you will be offered ISO images of installation disks. You should download the appropriate one, and then:

or burn the image to a DVD. Any program for burning discs such as Ashampoo Burning Studio, Nero, Ultra ISO and the like will be suitable;
or write the image to a flash drive. You will need a flash drive of 8 gigabytes or larger. The easiest way is to use the Rufus utility. Although it is not recommended by Microsoft, it can itself determine the type of OS being recorded, and it also allows you to select the disk partition type - MBR or GPT. You can download it on the official website https://rufus.akeo.ie. The Russian version of the utility is also available.

Reinstalling the OS will help solve many software problems

after pressing the power button, press the F11 key;
Select the required drive from the list that appears;
following the installer's instructions - install the operating system (select "Install" rather than "Update").

If the user has a license code for the edition of Windows being installed, it can be entered at the installation stage.

Laptop hardware failures

With hardware failures, everything is somewhat more complicated. Most of them cannot be eliminated at home and cannot be done without consulting a qualified specialist. Therefore, it is worth considering only the most banal breakdowns, due to which the laptop may not start, and at the same time the user can fix them independently.

No power

In this case, when you press the power button, there will be no reaction from the device at all. The indicators will not light up and the fans will not start. There are several reasons for this:

the battery is not installed, missing or damaged;
not connected, power supply is faulty;
The contacts of the start button are physically damaged.

To resolve these problems you should:

Check whether the battery is securely inserted (you should simply disconnect it, wipe the contacts with alcohol, and install it back after drying). If possible, check the voltage at the battery terminals. Otherwise, it is necessary to replace it; for this, you should contact an official service center.
Check the power supply. Most of them have an LED operation indicator. You should check whether the plug is inserted into the socket, the connector into the power supply itself, and the connector into the power socket of the laptop. If there is a suspicion that the unit is faulty (it does not heat up, it has a burning smell), then it should be replaced.

To check the contacts of the physical button, you will need to disassemble the case and “ring” it using a multimeter for breaks.

Video card malfunction

A fairly common problem on laptops that are actively used for gaming. The main symptom is the absence of an image on the display, the appearance of graphic artifacts, and the video card displays an error in the device manager (usually error code 43). Troubleshooting is possible using the following methods:

replacing the graphics adapter (if it is connected via the MXM port on the motherboard);
Resoldering of a working GPU chip.

In any case, you will have to contact the service center. Unfortunately, the cost of such repairs is about 50–75% of the cost of a new laptop, so in most cases it is impractical. It’s a different matter if we are talking about a device under warranty.

Hard drive failure

In this case, the hard drive either does not appear in boot devices, or an error is displayed on it when trying to install the OS (due to the presence of damaged sectors). The first step is to remove the hard drive and wipe its contacts with alcohol - quite often the device is not recognized precisely because of the presence of oxides on them. If no reaction follows, then you should replace the hard drive with a compatible one (in most cases, it is 2.5-inch SATA).

Why does my laptop keep shutting down and rebooting?

The most common reasons for this:

RAM malfunction;
overheating of the motherboard (processor, graphics accelerator, north and/or south bridges, multicontroller);
malfunction of the power supply or battery (the current it produces drops in voltage or its current strength is insufficient for normal operation of the laptop).

RAM diagnostics are carried out using the Memtest program. If no errors are detected and a faulty battery or power supply is excluded, then most likely the cause is overheating. To eliminate it you need to:

clean the cooling system from dust;
replace thermal paste on the processor, graphics chip, north and south bridges, multicontroller (depending on the laptop configuration);
replace all thermal pads installed in the laptop (they are usually installed on memory chips integrated into the motherboard or graphics adapter);
Lubricate the cooler with silicone oil.

And to check the current temperature conditions of laptop components, you can use the AIDA64 program (https://www.aida64.com/downloads - here is a demo version limited in operating time). As a rule, the normal operating temperature for all laptops under load is between 45 and 80 degrees. If it is higher, then to protect against failure the device simply shuts down in emergency mode. This is why the laptop either turns off or reboots.

Video: how to determine faults if the laptop does not turn on

In summary, there are many reasons why a laptop may not start. The most common ones are discussed above. If you are unable to fix the problem yourself or the user simply does not want to do this, you should contact official service centers. You can view their list either in the warranty card for the laptop or on the manufacturer’s website.