Let's consider a typical situation - the laptop turns off when Windows boots. This happens for several reasons, which we will discuss. You can get professional help in setting up and repairing a laptop in St. Petersburg at our service center.
Some breakdowns and malfunctions that may arise during the operation of laptops are sometimes very difficult to identify and eliminate. After all, symptoms can point to absolutely any detail and not give clear answers. You encounter this process when the laptop turns off when Windows starts. But it is always necessary to clearly see this moment when all this happens.
Turns off when Windows boots (Windows logo appears)
While the operating system is loading, all devices are connected to the environment and the drivers for each equipment are processed. This is usually seen in the example of a video card, when the desired resolution and color quality are set. With such symptoms, the problem may be either in the laptop hardware or in the operating system itself.
It happens that drivers are installed for the wrong equipment or their update occurs with an error. Consequently, they will process processes and commands with errors, which will lead to shutdown. A comprehensive diagnosis is required by a service center specialist who will tell you exactly what the problem is.
Motherboard mounting
The problem with the system unit turning off immediately after turning on the computer may be an incorrectly installed motherboard.
This mistake is made mainly by inexperienced users who are assembling a computer for the first time and who do not pay attention to the features of attaching the motherboard to the case.
The motherboard must be attached to the inside of the system unit only using special mounting racks.
On the surface of the motherboard there are holes specially designed for fastening with grounding contacts. If you try to screw the board to metal without stands, the computer most likely will not turn on, or it will turn on for a few seconds and then turn off abruptly. But even if the computer turned on and the operating system loaded, but no shutdown occurred, there is a risk of a short circuit.
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Laptop shuts down after Windows boots
If the laptop turns off immediately after the system boots, then most likely the problem is in the system itself and its components: drivers, utilities (especially for laptops, energy saving and power management utilities), software.
The system may also contain viruses and malware that interfere with proper functioning.
Particular attention should be paid to the system startup elements. But if you are not well versed in all this, and the laptop turns off when loading, then your path lies straight to the service center, where you will be provided with qualified assistance in solving the current problem. After all, only specialists who know a lot about this can find and eliminate the cause of the device malfunction.
Today we will look at:
Almost all laptop owners encounter problems of this nature: the device turns on and immediately turns off. To try to fix the problem, you need to find out the reasons for its occurrence.
Tip: Before using the tips in this article, try scanning your computer for viruses using an antivirus. Very often this is how the problem is solved.
In-depth diagnostics
If the above methods do not produce results, then it is necessary to carry out more thorough diagnostics using special equipment. As mentioned above, such a check and major repairs are possible only at a service center. Our specialists will step by step check all possible causes of the malfunction and fix the problem.
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If it turns off immediately, then this means a problem with the BIOS, maybe some BIOS signals are occurring. Well, if after a few seconds it could mean anything. Let me tell you what happened to my friend’s laptop and what I did.
Reasons for not turning on the laptop
Let's consider the first group of reasons for not turning on the laptop:
- The power supply is faulty.
- The battery is completely discharged.
- Problems with the power connector: either it is broken or there is no contact. The cause may also be a malfunction of the cord or plug that is connected to the external power supply.
- Battery low. This is a common reason why the laptop turns on and turns off immediately. Therefore, device owners should monitor the battery level.
- The reason may lie in the motherboard BIOS. In this case, the firmware may be broken. Or it is completely absent. If the user violates the structure of the laptop, the BIOS is blocked.
- There is a short circuit in the power supply. As a result, the video chip or processor is tied. The standby power microcircuit may even have burned out.
- CPU malfunction.
Battery, power supply and hard drive
These components cannot be repaired. Replacing the battery or power supply on a laptop is very simple - the faulty device is disconnected and the new one is connected. Problem solved!
With a hard drive it's not so simple. There is a special cover on the bottom of the case, under which the HDD drive is located. Attention! Do not try to open it unless you have a special screwdriver! You risk stripping the threads on the screw heads, and then removing the hard drive will be very difficult.
The technician removes the cover, disconnects the cable, bends the holders of the HDD drive and removes it. Instead of the faulty HDD, the specialist installs a new one. Then he closes the lid, tightens the screws and turns on the laptop.
Instant shutdown of the laptop. Identifying causes
Turning off the laptop immediately does not allow the operating system to boot. However, even with a malfunction of this nature, it is possible to provide access to the BIOS settings. Most often, the cause of this problem may be:
- The Winchester is out of order. You need to check if the hard drive can be detected in the BIOS settings. If it is found in them, then look at the loading process tab. This is necessary in order to understand from which device you can boot the operating system.
- The cause may be damage to individual segments of the hard drive. There is also a possibility that the OS boot loader has become corrupted. There is only one way to check the reliability: running the diagnostic program. This may be MHDD 4.6 or analogues of this program. If it is impossible to detect the hard drive in the BIOS, then this may indicate two reasons - a malfunction of the hard drive or the south bridge on the motherboard. To test, you need to connect a hard drive that is capable of operating in normal mode instead of the test one. If even in this case you cannot detect the hard drive in the BIOS, then you need to contact specialists who will simply replace the south bridge.
- A malfunction of the operating system loader will immediately manifest itself with the appearance of the message “ntldr is missing press Ctrl+Alt+Del to restart.” Instead, something else may be written, but similar in meaning. This problem can be solved very simply: you need to reinstall the system.
- The file structure of the hard drive may be damaged. In this case, there are attempts to load the operating system, but they are completely unsuccessful. The solution to the problem is to reinstall the OS.
Poorly adjusted BIOS
Among the software problems, there is a possibility of a failure in the BIOS settings. The system timeout can be adjusted by malicious files and viruses. Pay attention to the processor temperature; in some BIOS versions, automatic shutdown of the OS is activated when it reaches 75-80 degrees Celsius.
We recommend: what temperature should a laptop processor have?
Shutdown during initialization stage. Causes
A malfunction in the form of an instant shutdown of the laptop can also occur at the BIOS initialization stage. This is a fundamental difference from if the laptop was turned off while the operating system was loading. In this case, the device either turns off immediately or a few seconds after it is turned on.
Let's look at the most common causes of this phenomenon. There is no voltage coming from the power supply. This may be due to the cooler not working or the cooling system being dusty. The reason may also lie in improper assembly of the laptop cooling system. Because of this, the heatsink does not fit tightly to the crystal. Another instant shutdown of the laptop is a consequence of a short circuit in the south bridge or damaged BIOS firmware, or a malfunction in the north bridge.
Broken battery
The most likely factor is a dead or faulty battery. The shelf life of batteries reaches 5-10 years
, but due to improper use it is reduced to 1-2 years. Experts recommend leaving the device on battery power more often to increase battery life. Interaction with water or other liquids can shorten the life of the battery. The terminals quickly oxidize and become unable to conduct current of the required strength and voltage, which causes the laptop to shut down.
Why does my computer suddenly turn off after turning it on?
Reason 1: malfunction of the cooling system
The first most common cause of the problem is a malfunction of the cooling system.
The fact is that the cooling system is the most vulnerable point of a laptop. If the computer is not cleaned for a long time, then over time the laptop, namely the radiator grille and cooler blades, will become clogged with dust, interfering with the operation of the cooler and the air circulation that allows cooling the internal components of your laptop.
As a result of the fact that circulation may have been disrupted, the laptop will initially become noticeably warm. If the temperature exceeds all permissible standards, a relay will be activated in the laptop, which automatically turns off its operation to prevent combustion of components. If, already at the startup stage, the laptop cannot spin up the cooler of the cooling system, the laptop may turn off immediately after it is turned on.
The problem can be solved quite simply: you need to clean the laptop cooler. The problem is that each laptop model has its own disassembly method, and sometimes it is quite difficult to get to the cooling system. Because of this, it is strongly recommended to contact a service center or a computer technician who will help clean the laptop and also replace the outdated one. thermal paste (which is also highly recommended).
If you suspect that it is the cooling system in your laptop that is broken, for example, there were previously preconditions in the form of excessive overheating of the laptop, you should not put off cleaning it - if you continue to turn on the laptop with impaired air circulation, everything may end up in Some components on the laptop will burn out, and then repairing the device will be much more expensive.
Reason 2: Incorrect connection of laptop components
This reason should rather be considered if the laptop has previously been disassembled.
In this case, you will need to make sure that all the cables in the laptop are connected correctly and completely. Carefully double-check all connections; if a problem is detected, then after connecting it correctly, the problem should be resolved.
Reason 3: USB device conflict
Quite often, the problem with a laptop suddenly turning off can appear due to connected USB devices or memory cards that for some reason come into conflict with the laptop.
In this case, you should try to disconnect all USB devices from the laptop, and also make sure that the card reader is empty. After this, try starting the laptop.
Symptoms of overheating
The following factors indicate ineffective cooling:
- The air flow from the ventilation hole and the laptop body are tactilely hot.
- The laptop turns off only during high load - playing games or watching videos.
- The case itself is hot, and almost no air comes out of the ventilation hole (the grille is clogged with dust).
- The fan was humming loudly before turning off (the cooling system is working at its limit).
- The case is hot, but the air coming out of the vent is barely warm (the cooling system is faulty or incorrectly installed).
- The fan operates intermittently (faulty).
- Monitoring programs (Sandra, HWiNFO, Aida64, etc.) record high component temperatures.
The maximum permissible heating indicator for the processor depends on the model and is approximately 85 - 100 ⁰C, for the chipset - 80 - 100 ⁰C, for the video card - 90 - 100 ⁰C. The screenshot below shows the maximum and current temperatures of the cores of an Intel Core i3 processor installed on a laptop under high and medium load. The values shown are normal.
Increase
Sometimes the only manifestation of overheating is unstable operation of the laptop. This happens due to poor cooling of nodes that are not controlled by hardware monitoring.
Read Laptop turns off by itself without overheating
RAM
The problem associated with turning on the computer is the failure of one or more RAM sticks. You can notice it by the inability to turn on the computer and the sound signals at startup - one long and one short.
Failure of RAM can also be noticed by the system freezing, programs and games launching too slowly, frequent reboots for no reason, and the PC turning off immediately after it starts.
The strip may be inserted incorrectly, and the solution to this problem will be its normal installation in the connector. And if the bar is damaged, then it is worth replacing it completely.
