What is the reason why the laptop won t turn on?

The laptop won't turn on.

1.The laptop power supply is low.

The laptop power supply is low. This situation is caused by excessive use of the laptop or excessive power consumption of the battery that has been standby for a long time, and as long as you charge it more before use, this problem will be solved.

2.Operating system issues.

This type of problem is always reflected in a system boot error or reboot after the hardware detection is completed, and the solution is to restore the system or reinstall the system.

3.There was no reflection when it was turned on.

This type of situation is generally caused by loose hardware or water ingress into the notebook. If the hardware is loose, just open the notebook and reinsert the loose hardware; However, due to hardware damage, the damaged hardware should be replaced after testing with a professional instrument.

4.When the computer is turned on, it prompts that the serial port, parallel port, hard disk, etc. cannot be recognized.

When the computer is turned on, it prompts that the serial port, parallel port, hard disk, etc. cannot be recognized. This type of situation is usually caused by loose hardware or the same error of COMS data, and can only be troubled by reinserting the loose hardware and restoring COMS data.

5.The laptop cannot enter the system after the alarm is turned on.

Anything that is emitted when the notebook starts"Flute. ""Flute. "The alarm sound is caused by a hardware error or damage. This kind of fault needs to be repaired according to the different alarm sounds.

Reason for not turning on:

1. Check whether the computer is out of power, see if the power adapter is connected, and whether the power indicator is on normally.

2. Check whether the memory module and hard disk are loose.

3. Erase the computer and reinstall the memory module and hard disk.

4. If it still doesn't work, go to the computer physical store for maintenance and testing.

The possible reasons are as follows:

1. Motherboard failure, memory failureIf there are two memories, it is recommended to pull out one memory, keep one memory for a boot attempt, if not, change the other one separately to try to boot the test, if it is a motherboard problem, it is recommended to send it for repair, you can't do it yourself.

2. Graphics card, screen cable failureGeneral graphics card, screen cable failure, usually can enter the operating system, if you have set up the boot**, if you can hear the sound of entering the system when you boot up, it means that the graphics card or the screen cable is faulty or loose. For the above hardware failures, it is estimated that the vast majority of quiet users can't handle it, so it is recommended to send it for repair.

3. Loose hardware, such as loose memory or graphics card, especially the memory has the greatest chance, try to plug it in and unplug it again.

4. If the motherboard BIOS error is caused by the motherboard BIOS error, you need to clear the BIOS, complete the discharge operation, and reset it. The above reasons can only answer for you a general direction of failure, for Xiaobai, even if we encounter hardware failure, we can't repair it ourselves, but we can try whether the hardware is loose and the motherboard clears the BIOS.

Here's how to fix it:Reason 1: Battery, power supply problems1, check all cables (including power plugs) to ensure that all devices are properly and tightly connected together.

2. Check whether the laptop has power (although most people will not make such a low-level mistake), because the notebook has a built-in battery, so it can be used without plugging in the power supply, of course, the time is limited, when the built-in battery is used up and not charged, it will cause the notebook to fail to turn on, at this time we just need to plug in the power to charge.

Reason 2: It may be caused by a virus infection, press and hold F8 to enter the advanced options page, select "Latest Correct Configuration", and then press Enter. After entering the system, run the anti-virus software, check and kill the virus, if there is a virus, restart the computer after the anti-virus, if it is not normal, it may be caused by the incompatibility of the device driver and the program, delete the graphics card, network card and other drivers, restart after removing the driver, if it doesn't work, then rule out this reason.

Reason 3: Hardware problem: Disassemble the notebook to check whether the hardware is loose, generally the hardware is not plugged in well, there will be an alarm sound, the long sound continues to ring means that the memory module is not plugged in tightly, one long and one short means that the memory or motherboard has a problem, one long and two short means that the graphics card is wrong. If there is too much dust inside the notebook, it is best to clean it up first.

In addition, pay attention to whether it is caused by the new hardware, if it is normal before the replacement of the hardware, and it is not normal after the replacement, then check whether it is compatible. If it doesn't start at this time, it's best to send it for repair, and a professional will check whether there is a problem with your hardware one by one. Reason 4:

Display ProblemsIf the power supply** is working, but the screen is still pitch black, try connecting another monitor to your computer (you can borrow one if necessary) to make sure it's not a monitor issue.

In this case, it is generally the fault of the laptop's battery or motherboard, it is best not to disassemble it by yourself, and to find a professional repair point for inspection and repair. If your laptop simply doesn't light up, it may be due to static electricity or memory modules, you can remove it and wipe the gold finger of the memory module with an eraser.

1. It may be that the notebook is out of power, when the built-in battery of the notebook is used up and not charged, it will cause the notebook to fail to turn on, at this time, you only need to plug in the power supply to charge.

2. It may be that the monitor is damaged, if the power supply is normal, but the screen is still dark, you can try to connect another monitor to the computer to determine whether it is a problem with the monitor.

3. It may be a virus in the computer, you can turn on and press and hold the F8 key to enter the advanced options page, click "the latest correct configuration", and then press the enter key to force the main interface of the computer, after entering the system, run the antivirus software, and check and kill the virus.

If the above operations can not make the laptop boot, it is also possible to make the computer hardware malfunction, if possible, you can disassemble the notebook to see if the hardware is loose, generally the hardware is not plugged in well will have an alarm sound, the long sound continues to ring means that the memory module is not plugged in tightly, a long and a short sound means that there is a problem with the memory or motherboard, a long and two short sounds indicate a graphics card error, or it may be a problem with the computer system, it is recommended to go to the nearest maintenance location for these problems, and hand over the computer to a professional maintenance personnel for maintenance.