Why does my laptop always shut down inexplicably

The CPU or graphics card overheats and the system automatically shuts down.

Laptop automatic shutdown; The common reasons are: first, caused by poor heat dissipation, it is enough to disassemble the machine to clean the fan or replace the fan; Second, the BGA (north-south bridge, graphics card) packaging chip on the motherboard is damaged by virtual soldering, which needs to be repaired and solved. It is recommended that you send it for repair and testing.

In Beijing, I will help you to test for free to make sure, and it can be repaired on the same day.

If you are not in Beijing, it is recommended that you find a reputable and skilled repairer to help you overhaul.

Hello, then charge it and then turn it on.

1. The battery is exhausted;

2. The battery is aging or has a memory effect, and it cannot continue to last when the power is not exhausted;

3. The battery management software of the computer is abnormal, so that the computer obtains the wrong power information and causes the shutdown;

4. The battery management parameters of the computer are unreasonable, and the battery is shut down when the critical point of residual power is reached;

5. Protective shutdown caused by non-battery factors such as high computer temperature, abnormal software, and virus infection.

Introduction: Notebook originally refers to a paper notebook used to record and write a diary, and now it mostly refers to "laptop computers" and notebook classification browsers. Laptops, also known as "portable computers", are characterized by their small size and are easier to carry than PCs.

Also known as a laptop, handheld or laptop, it is a small, portable personal computer that typically weighs 1-3 kilograms. The current trend is to be smaller and lighter, but more powerful.

Laptop battery: Rechargeable batteries are commonly used in laptops, and they also provide support for general civilian AC, which is equivalent to providing a UPS with excellent performance for computers. However, whether it can be shared with civilian alternating current depends on the type of battery.

Laptop battery classification:

1. The relatively rare nickel-cadmium battery, this kind of battery has a memory effect, that is, the battery must be completely used up each time and then charged separately, and the charging must be fully charged once before it can be used. If each charge and discharge is insufficient, insufficient charging or improper discharge will lead to a reduction in battery capacity;

2. NiMH battery, this kind of battery basically has no memory effect, and the charging and discharging are relatively arbitrary, so when in use, you can use the computer while connecting the power adapter of the laptop to AC. At this time, if the battery is insufficient, you can use the computer while charging, and if the AC power goes out, the battery can be powered automatically.

3. Lithium battery is the current mainstream product, characterized by high voltage, low weight, high energy, no memory effect, and can be charged at any time; Other things being equal, the same weight of lithium-ion batteries can be supplied for 5 hours longer than nickel-metal hydride batteries, generally more than 2 hours, and some can even reach 4 hours.

You can judge whether there is a problem with the hardware of the laptop, because the laptop is small, the exhaust heat dissipation is obviously slower than that of the home desktop, so sometimes it is inevitable that there will be an automatic operation of sudden shutdown due to the high temperature of some hardware or battery problems to protect the hardware from being damaged, which can be divided into the following situations:

The computer system is poisoned or contains malware.

The CPU fan is broken and does not rotate, resulting in high CPU temperature, and automatic power-off protection when overheating.

The power battery is damaged, or new hardware is added that is underpowered, or the battery power itself is broken and can no longer be charged.

The fan of the discrete graphics card or discrete graphics card is broken, causing the temperature to overheat.

The motherboard is broken, and the motherboard core is overheating.

The solutions are as follows:

Open the antivirus software of the computer to see if it kills the virus, first determine whether the computer system is poisoned or caused by malware, if there is a virus, it is recommended to use a combination of antivirus software to kill the virus, it is best to use the safe mode to check and kill, or if it doesn't work, reinstall or restore the system.

**Some software, test the temperature of each hardware of the computer, there are test data can be viewed, open the case, see if the CPU fan, independent graphics card fan rotation is normal, if you find the situation, you can change the fan. It's not very expensive, about 30-50 yuan is very good.

If the computer is equipped with a discrete graphics card, the power supply is not enough, then you can only change to a higher power power supply, the power supply has been used for a long time, it is unstable, and you need to change the power supply to test. The charging source of the notebook also has a chance to break, see if it can be charged when plugged in, etc., if not, it needs to be replaced.

The notebook is in a shutdown state, take it apart from the host and take a look, touch the south bridge, north bridge chip and graphics card chip of the motherboard with your hands, if it is very hot, it may also be broken, and you need to send it to the computer store for repair and replacement of new hardware. When replacing, it is best to watch the whole process, otherwise be careful that unscrupulous merchants replace good parts with defective parts, replace good hardware, and use shoddy ones.

If the redo system is still like this, it is estimated that there is too much dust inside the machine, and the temperature is too high due to poor heat dissipation, and the next Master Lu will detect that the temperature is too high, and it is recommended to send it to the maintenance point to clean up the dust!

The possibility of automatic shutdown of the laptop has a lot to do with the high temperature of the CPU, but disassemble the machine to remove dust from the fan and recoat the CPU with heat dissipation silicone.

It may be caused by the CPU temperature being overheated, you can pay attention to it when shutting down, if it is hot, clean the ash properly, and add some silicone or something.

Is the computer you bought a little long, this may have a problem with your fan, or there is too much dust in it and it needs to be cleaned, it is not recommended to do it yourself, or find a nearby maintenance point to find a professional reliable point.

It depends on the situation, one is to look at the computer configuration, and most importantly, the power supply.

The computer with too old configuration is prone to crash and freeze, resulting in shutdown.

If the power supply problem is not fixed by a professional, it is recommended that you go to a computer store to have a look.

This reason can only be judged and analyzed:

This situation is nothing more than that the laptop heat dissipation is not good, when the laptop CPU reaches a certain temperature, the self-protection function will be activated, and the computer will automatically shut down.

Solution: Dust the notebook.

If the virtual memory is occupied, you should clean up the junk on your computer.

If the hardware is overheated for a long time, it should be shut down and wait for the hardware to cool down.

1 First check the power supply, sometimes the battery time is long, there will be a virtual power phenomenon, such as 40% of the power directly shut down. Remove the battery and use the charger directly to supply the battery, if there is no problem, it means that the battery is wrong, in this case, you need to replace the battery.

2**A Master Lu, turn on the temperature monitor to see if the temperature is too high when the machine is running and the computer automatically shuts down, if so, ask a professional maintenance person to open the cover to clean up the dust and reapply the silicone grease.

3 Try reinstalling the system, in rare cases, there will be conflicting software that will cause a reboot.

Follow the steps, if there is no problem with the above three points, please find a professional, 9 percent of the fault will be on the motherboard.