Sometimes the notebook won t boot, and sometimes it s okay?

1.First of all, check whether the external wiring of the computer is connected, and plug each cable back in to see if the fault is eliminated.

2.If the fault persists, then open the main chassis to check whether there is any excess metal in the chassis, or a short circuit caused by the deformation of the motherboard, and smell the inside of the chassis.

3.If not, clean the motherboard from dust and check if the computer is OK.

4.If the fault persists, unplug the reset cable on the motherboard, connect it with other switches and indicator lights, and then use the change cone short-circuit switch.

5.If it can't be turned on, then use the minimum system method, unplug the data cable of the hard disk, floppy drive, and optical drive, and then check whether the computer can be turned on.

It may be a contact problem with the graphics card, or it may be that the temperature is too low and you need to warm it up to normal. Or maybe it's the hardware that doesn't have good contact.

The external power supply starts normally, which means that the motherboard and graphics card are fine, the problem is in the battery power supply, the battery power supply has a resistor and capacitor, adjust the battery voltage and input power, it should be a problem with this part. This individual can't fix it, so I have to go to a computer store and test it with a universal meter to see which container has a problem.

As far as described, there is a clear battery problem. The battery voltage is low or there is a problem with the motherboard battery detection module.

I don't know how to continue asking, satisfied.

It may be that the contact is bad, find someone to take a look.

Operating computer: Lenovo Thinkpad

Operating system: Windows 10.

1. If the computer can't be turned on and restarts repeatedly, you only need to reinstall the new system with a USB flash drive to completely solve the problem. First of all, search for and **install the Magic Pig Installation Master (as shown in the figure below) tool on the available computer, open it, insert a blank USB flash drive, select the production system mode, and click to start production. The pin bucket is empty.

2. Select the desired system and click to start making a USB flash drive boot disk (as shown in the figure below).

3. After making the boot disk, you can preview the boot hotkey of the computer motherboard you need to install, and then unplug the USB flash drive to exit (as shown in the figure below).

4. Insert the boot disk into the computer, press the boot hotkey to enter the boot interface to sell, and select the U disk boot item Enter to confirm the entry into the PE system (as shown in the figure below). Then open the Magic Pig Installation Tool, and select the system you need to install it on the C drive. Blindness.

5. After the installation is completed, restart the computer (as shown in the figure below). Wait for the new system desktop to enter the installation is successful.

Considerations for choosing a notebook:

1. Needs and budget.

Buying a notebook first needs to clarify the budget and purpose of the notebook, choose different configurations according to different uses, especially the purpose is very important, for example, if you consider playing games, playing online games such as PUBG, we undoubtedly need to choose mainstream game books, and need to pay attention to whether the performance of the graphics card meets its game needs, but at this time your budget is only 3000 yuan, obviously the budget is not enough, even if you want to buy a notebook of about 3000 yuan, you can't meet the requirements of the game, which is equivalent to buying in vain.

2. Screen. Notebooks have high and low configurations, natural screens also have good or bad quality, screen classification is A++, A+, A and other classifications, Class A is a relatively ordinary screen, the display effect is more general, usually used in entry-level notebooks, A+ high quality, clear and delicate, to meet most of the display needs, A++ is the best screen display effect, but also the first choice for design. <>

In daily life, there will be a lot of problems with laptops, and the laptop can't turn on is a computer problem that many friends will encounter, and there are many reasons, such as system damage, battery failure, notebook setting problems, etc., general minor problems.

Laptops are very cost-effective and convenient, so they are the first choice for many users. However, there are times when our laptops suddenly won't turn on, what's going on? How do we deal with it?

Below, I will introduce you to the solution skills of laptop not turning on.

What to do if the laptop won't turn on.

First of all, you can press and hold the power button for about 35 seconds to use up the residual static electricity inside the notebook, and then wait for five or six minutes, and then press and hold the power button again.

Remove the computer's battery, plug it in an external power supply, and wait for about 20 seconds to press the power button to turn it on.

The computer does not respond when it is turned on**-1

If it still can't be turned on, and the light of the power adapter will go out immediately, then you need to unplug the power adapter immediately, it may be a circuit problem with the adapter, and plugging it may cause the motherboard to be burned out or short-circuited.

The computer does not respond when it is turned on**-2

Unplug the power adapter, put the battery on, turn it on again, if it can't be turned on, then take the battery off and send it to a professional repair center for repair.

The computer does not respond when it is turned on**-3

If the computer cannot be turned on due to special circumstances such as water ingress, please do not turn it on immediately, and it is best to send it to repair.

It is also possible that the computer has run out of power, and it is necessary to turn it on again after charging it.

Laptop boot computer**-4

The above is the solution to the problem that the laptop won't turn on.

If the computer screen is not lit, it is generally the power supply, memory module, and hard disk that have been in poor contact or damaged.

It is recommended to get it to the place where the computer is repaired.

Check whether the motherboard BIOS is damaged, and reflash the motherboard BIOS program.

You can take it to a computer repair shop for a repair.

It must be a system problem, fix the system.

1. Unplug all external devices, such as mouse and keyboard, external screen, etc., unplug the external power supply and use the battery to turn on, and confirm whether the hard disk indicator flashes during the boot process and whether it is turned on**.

2. Repeat the above operation, this time plug in the external power supply, remove the battery and boot the test.

The analysis of the test results of the above two items is that if any two of them are in the same state of boot black screen and no boot sound, it may be caused by a motherboard failure.

If there is a boot **, it means that you can enter the system, and the situation may be a failure of the screen itself, a data transmission problem with the screen cable, such as only one of the above two boots** or a successful boot, it means that it is a problem with the power adapter or battery.

3. The boot screen caused by the system, the screen is black in this case, there will be BIOS interface logo, and the cursor will flash in the upper left corner of the screen, even if there is no cursor, the screen will be brighter than if it is not powered on.

I am an IT professional This may be a few problems You can check them one by one 1 It may be that the power supply is insufficient You may have to change the power supply 2 It may be that the CPU temperature is too high or there is too much dust in the case You can clean it up yourself 3 You can choose to reinstall the system to try It may also be a problem with the system 4 Finally, it is a problem with the motherboard Maybe the excuse of the motherboard has been changed or the contact is not good, resulting in a failure to start You can try to start with a short circuit You can try to start This is my suggestion You can try Thank you.

According to the described fault phenomenon, this fault is sometimes triggered and sometimes not triggered, and should be considered from the following aspects: 1. Whether the power supply of the laptop power adapter or battery is insufficient; 2. Check whether the power switch is damaged by oxidation or poor contact; 3. Check whether the power supply, clock, reset, and good signals of the south bridge are normal; 4. Check the power supply, clock, reset, and good signals of the boot chip; 5. Check whether the motherboard BIOS is damaged, and reflash the motherboard BIOS program.

There are two common causes.

1.Notebooks are easy to generate static electricity because they are often carried, so sometimes they can't be turned on normally. Remove the battery and press the power button about 20 times to achieve the discharge effect.

2.The boot button is broken, and the button doesn't work?

There are many reasons for this.

1.If there is a short circuit in the notebook, or the connection is unstable, in this case, the notebook may or may not be able to be turned on if you need to move it.

2.There is a problem on the design side of the machine, resulting in electrical instability when booting, including circuit design or layout design.

of instability or immaturity.

of immaturity. In this case, the screen will light up and then go black.

1. You see if the hard disk light is flashing during the boot process, which can tell whether the computer is normal to boot and load the operation.

2. If you can be sure that the system is loading normally, it means that the machine itself is operating normally. Then it may be a problem with the embedded display, such as poor cable contact.

3. If you don't observe the continuous flashing of the hard disk light, it may also be a power failure, or other hardware problems, resulting in most cases the machine does not start normally at all. I think it's more likely that there will be a power supply problem, because occasionally you can boot up and run normally, but not if there is a problem with other hardware.

Today's notebook power supply is generally a wide range of voltage, which can be used in the domestic 220V and Japanese 110V environments, but there are some that are not, you have to see if you can use it now at 110V, if you don't make it clear that you can use it at 110V, don't use it again. It is difficult to say whether it is the damage to the power adapter or the power supply part of the fuselage.

It's best to send it to the maintenance department for inspection!

Hope mine is helpful to you!

First, check whether the hard disk has bad pages and whether the optical drive can operate normally. If there is no bad page, the optical drive is sure to be good, take down the hard drive, reinstall it on another computer, try it only because your system boot file is missing! It is necessary to put it in hard packing!

Or the memory is loose! It's possible.

Solution: First enter the safe mode, enter the method: when you start the computer, it will count down, then you can press and hold F8 to enter the safe mode.

1 If you can, enter "Safe Mode" is here"Safe mode"Kill the poison in the state. Kill intact in the restart, see if it works.

2 Or after the Safe Mode page, see the page selection"Correct configuration for the last time"．

3. If it doesn't work, you can only reinstall the system

Generally, restart first, if it doesn't work, it may be that the explorer registration item is missing, or the file is corrupted, you can refer to the following article to repair, if not, you can only reinstall the system.

When the laptop is asleep or hibernating, and then the laptop is in a black screen state of suspended animation, it will be mistaken for a black screen. So I want to check if it's in both states.

Sleep or hibernate is an energy-saving feature that turns off the display, and if the laptop is turned on but used for a while or enters a state that shows low battery power, the system may start sleep and hibernate mode.

You can change the setting of sleep or hibernation, and the method of setting:

1) In the blank space of the desktop, click the right button, out of the drop-down menu, select "Personalization", 2) in the lower right corner, select "Screen Saver", pop up the screen saver settings tab, enter the power settings at the power management place, 3) In the left menu bar of the power settings, click "Change Computer Sleep Time", 4) After entering the settings, according to the figure, change the following time to "Never", and then click "Save Modification".

It still depends on whether you have an integrated graphics card or a discrete graphics card.

The main cause may be poor contact between memory or memory slots, or poor contact between the graphics card and the graphics card slot. When the heat expands and contracts coldly, it will cause sometimes it can be started, and sometimes it can't be started. It is also possible that there is a problem with the power supply of the host, such as the leakage of the large vertical wave capacitor of the Western Han Dynasty in the internal original.

When the solder joint is in good contact, it can be started, and when the solder joint is in poor contact, it cannot be started.