The laptop freezes when switching external power supplies.

1。Software conflicts, incompatibilities: redundant similar software installations! The computer is overclocked or there is too much software installed, and the system memory is insufficient!

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2。The computer system is interfered with by stubborn viruses and Trojans or worms, or you have lost your system files!

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4。Do it when necessary: restore the system or reinstall the system with one click!

5。Hardware problems, hard disk or motherboard or fan problems, send it for repair!

You set the screen saver to appear for 99 minutes.

Generally, the computer crashes with a hot key method, that is, press the rset key, that is, the restart key, it is next to the boot button, and the notebook can only install the boot button for 7---10 seconds, of course, this method, desktop computers can also be used.

Here's how to analyze the causes of the crash and how to deal with it:

The first is that there is a problem with the power supply, such as the high-voltage rectifier filter circuit of the power supply, and the three-electrode switch tube has a problem, it will crash, the way is to replace the power supply, the second is the problem of memory and graphics card, such as the chip problem of the video memory and graphics card, resulting in a crash, The solution is to dial out the memory and video memory, Be sure to remember the direction, and then use the eraser to align the gold finger (that is, the part with the copper sheet) back and forth a few times, and then change a slot to insert back, (Don't change the graphics card) it's OK, the third is that there is a problem with the CPU, and there will also be a crash, (such as a broken fan) This is because the CPU temperature is too high and cannot be cooled down. The method is to clean up the dust, or change a fan, and the fourth is that if there is a problem with the motherboard, there will also be a crash, and there are many crashes on the motherboard. The fifth is that there is a problem with the computer's operating system, such as poisoning, loss of files, etc., and it is OK to reinstall the system.

This usually happens when the AC module of the motherboard is broken.

The motherboard power module is abnormal, and the repair bar is about 300.

1. This is generally a problem with the motherboard, which needs to be checked and found in practice, the graphics card chip and other chips are running in different states in the power battery, there may be this problem, or the dual graphics card is automatically switched, etc. Actual inspection is required in repair.

2. It is also possible that the memory module is broken, if it can be disassembled, take the memory module down and clean it before inserting it back is almost good. In one is that there is a problem with the power supply.

3. The above operations must have certain professional knowledge, otherwise disassembling the laptop is easy to cause damage to the notebook.

4. If you can't solve it, you need to contact after-sales service or go to a professional repair shop for maintenance.

This may be that the system is not a problem.

The last time I repaired a Dell alien computer, that's the reason, as long as you plug in the external power supply, it will be stuck, and it won't work if you unplug it, only hard shutdown, and the system will be fine, this may be the system that causes the power control module to falsely alarm, and it is wrong, so it will be stuck.

The voltage of the power supply is unstable It is recommended to change the power supply.

Is there a change of the same power supply to try, if it is still like this, it is a problem with the motherboard circuit.

It seems that the landlord's notebook has a virtual soldering situation! If you are an electronics enthusiast and maintenance expert, it is recommended that you use a magnifying glass to see if there is any virtual soldering in the external power supply part of the motherboard, and solder it with a low-power tip soldering iron and solder paste. If it doesn't work, find a dedicated maintenance person to get it, don't use it.

Otherwise, it is easy to expand the problem!

Generally, this situation can only be understood as a problem with the power cord.

Is the external power cord original? If it's not original, check whether the voltage of the transformer on the power line is matched.

If the power cord is original, then consider trying a new one as well.

According to you, there is a problem with the power cord. It is recommended to try changing the power cord as soon as possible, because if this is the case, it will also affect your battery for a long time.

General computer crashes.

It's a hotkey method.,It's to press the rset key.,That is, the restart key.,It's next to the boot button.,The notebook can only install the boot button for 7---10 seconds.,Of course, this method,Desktops can also be used.。

Here's how to analyze the causes of the crash and how to deal with it:

The first is that there is a problem with the power supply, such as the high-voltage rectifier filter circuit of the power supply, and the three-electrode switch tube has a problem, it will crash, and the method will be ruined Zen Heng is to replace the power supply, and the second is the problem of memory and graphics card, such as video memory.

If there is a problem with the chip of the graphics card, the solution is to dial out the memory and video memory, be sure to remember the direction, and then use the eraser to aim at the gold finger.

That is, the part with the copper sheet) rub it back and forth a few times, and then change a slot and plug it back, (don't change the graphics card) It's OK, the third is that there is a problem with the CPU, and there will also be a crash, (such as a broken fan) This is because the CPU temperature is too high and can't be cooled down to cause a crash. The method is, clean up the dust, or change a fan, the fourth is, the main attack on this board problems, there will also be a crash, the motherboard crash phenomenon is more.

The fifth is that the computer's fiber does the operating system has a problem, such as poisoning and loss of files.

Wait, reinstall the system.

That's it.

You can exclude them one by one like this:

First of all, you can troubleshoot the system or other software!

Remove the battery first when the power is off, connect the laptop to the power adapter (external power supply), turn on the computer and enter the normal system, see if the notebook can work normally, if it is OK, then the power adapter is no problem.

Powered by battery alone, you have tried this situation, it is OK, combined with these two cases, then it means that there is a problem with the power processing circuit inside the notebook.

If you have already tried, remove the battery and connect the power adapter alone to the power adapter and it can't work properly after booting up, then it means that there is a problem with this adapter. But you said that the power adapter can enter the PE system or safe mode and work normally.

Combining these two cases, the problem with this adapter could be:

a.The resistor of the power adapter is broken, and the resistance is broken, resulting in the adapter not working normally with full load! For example, if you are the adapter output, then you can only output 19VDC2A normally.

b.When the electrolytic capacitor electrolyte is dry, the power supply can work normally without load or with a little load, and it will definitely not work normally when it is fully loaded! If your laptop is very old, this is very likely!!

Why does it work properly when entering the PE system or in safe mode, because in these two modes, the laptop works with the least power, that is, it does not work at full load. If the output is an adapter, it may work fine in both modes as long as 19VDC1A!

You can take it apart and see it yourself, the general adapter is made of ultrasonic stamping, similar to glue, and pry it open with a flathead screwdriver or scissors.

Just adopt it!

Let's take a look at Master Lu first, if the temperature is okay, it is a hardware failure of the motherboard or graphics card chip, and the battery is in low-voltage power-saving mode, such as the motherboard working state and the small difference between the function module of the graphics card so there may be differences, it is recommended to find a practical repair with good technology.

The internal wiring of the power adapter is aging and the power supply is insufficient, please replace it.

Hello, please ask, is it good to change the power adapter??

1. Software problems, including system file corruption, viruses and other problems. For example, a process in the task manager with a high usage rate may be a software problem, and the solution is to format and reinstall the system on the hard disk, and all viruses or system software problems can be solved. If it still freezes after getting it, then you can rule out this possibility.

2. Heat dissipation problem, this can be the next Master Lu to see the highest temperature record of the graphics card and CPU, if the temperature is high, you need to deal with heat dissipation, if the temperature is normal, you can rule out the possibility of this heat dissipation problem causing a crash.

3. Hard disk problems, such as hard disk bad sectors, hard disk head motor problems may cause crashes, this can be detected by the next hard disk detection software, but this can only look at the bad sector, if there are other motor or head problems, this can not be seen, this needs to replace the hard disk test, if it is replaced, it is a hard disk hardware failure.

The power cord will not be affected, as long as it is a normal use of the power cord, there is no problem, the temperature of the host is too high, and it will jam and crash after overheating.

Driver problems, incorrect installation until the time has been starting, occupying the program resulting in stuck.

Clean up useless programs, optimize the system, etc.

If the hardware is not in good contact or there is a problem with the memory and hard disk, it is recommended to send it for repair.

If it is a frequent crash after changing the line, it is still related, the quality of the line is not good, and the power supply is insufficient.

Hello is not necessarily a problem with the power supply.

With this configuration, the general power supply will do. $80 is fine.

Please analyze and solve the problem from the following aspects.

1 Computer poisoning or malware may also cause computer abnormalities, the solution is to upgrade the anti-virus software, anti-virus, if it really doesn't work, reinstall or restore the system. Reinstalling or restoring the system can completely resolve the software side of the problem.

2. Unreasonable configuration, uncoordinated, and incorrect BIOS settings will also cause computer abnormalities, so you should find more professional personnel to solve the problem when installing or upgrading hardware. You can send the configuration down to help you see if the configuration is reasonable.

3 The high temperature of the computer will also cause the computer to be abnormal, it is recommended to use Master Lu software to measure the temperature of the hardware, and then solve it.

4. Due to the voltage instability point, the power supply is not enough, and it will often cause computer abnormalities, if it is caused by these reasons, configure a voltage regulator, and replace the high-power power supply to solve the problem.

5 Caused by running large software and programs, such as playing big games, using large software, watching Blu-ray movies, etc., it should be caused by poor computer hardware configuration. The only solution is to upgrade the computer configuration and optimize the computer system.

6 Old computer Because there is too much dust in the case, it is easy to cause computer abnormalities caused by short circuits. Clean the inside of the chassis frequently.

7 Old computer Due to the long period of use, the capacitance of the motherboard circuit is aging, which will also cause abnormal problems in the computer. Only sent for repair or replacement.

8 Old computer hard disk will also fail after a long time, causing the computer to crash, which requires the use of hard disk testing software to test the hard disk, repartitioning the installation system can repair the hard disk logical bad sectors, can not be repaired, and only to replace the hard disk.

If it helps, please choose the answer you are satisfied with!!

There are several reasons why your computer freezes:

1. Hardware:

1.Unstable operation of the equipment due to poor board contact or quality problems2Poor cooling of the computer causes the CPU or graphics card chip to crash due to excessive temperature, including hardware design flaws, such as certain recalled graphics cards or computer parts.

Second, the software aspect:

1. The user is controlled by a remote Trojan, and everything on the computer is in the hands of hackers.

2.Viruses or malicious plug-ins invade the system, resulting in system damage.

3.The driver installed on the computer is not compatible, and the computer will crash after running for a period of time.

4.The compatibility of the software itself, the serious conflict between the software incompatibility and the system conflict, and the computer crashes.

It doesn't seem to have much to do with the power supply.

This doesn't have to be the cause of the hardware.