How to solve the problem when the Lenovo computer has a black screen and the power button is on. Must-see: How to solve the problem when the computer has a black screen and the power button is on.

php editor Zimo brings you the solution to the problem of Lenovo computer black screen and power button on. When we encounter a situation where the computer screen is black but the power button is still on, it may be due to a variety of reasons. In this article, we'll walk you through some common solutions to help you quickly resolve this issue and get your computer back up and running. Whether it is a hardware failure or a software problem, we will analyze it one by one so that you can easily deal with the problem of black screen on your computer. Next, let’s take a look!

The emergence of laptop computers has brought a lot of convenience to our lives. They can be used not only when working, but also when studying. The emergence of laptop computers has brought great convenience to our lives, and it does not require the use of additional power supply, so when using a laptop computer, we do not need to worry about the problem of the power light being on but the screen being black. It is very common for a laptop to have a power light on but a black screen. When we encounter a situation where the laptop power light is on but the screen is black or does not light but does not go out, we can check and determine the fault by looking at the power interface of the laptop host. Next, I will introduce to you how to detect the problem of Lenovo laptop with the power light on but black screen, as well as the analysis and solutions of the laptop power light on but black screen.

To solve the problem of laptop power light on but black screen, first check whether the laptop power interface is damaged. If the interface is not damaged, there may be another cause for the problem.

First of all, we should carefully check whether the power interface is damaged. For USB interfaces, damage may be due to incorrect insertion or poor contact due to oxidation of the contact points. Additionally, we need to ensure that the interface is in working order. Generally speaking, the main reason for laptop interface wear or damage is improper operation during use. For example, the power interface may have poor contact, or the power cord may be oxidized resulting in poor contact, or even poor contact may cause the power cord and laptop power interface to fail to connect properly. These reasons may cause the laptop power light to be on but the screen to be black. Therefore, when checking whether the laptop power interface is damaged, we should not rush to replace it, but should ask professionals to judge and repair it.

#2. Check whether there is any leakage or short circuit in the notebook power interface. If there is no problem, it means that the two capacitors on the motherboard are faulty. .

In addition to the power interface, there are many other interfaces on the laptop. In some cases, if we are using other computers, the slot may not open or the power supply may not open. The light is on but the screen is black. This means that the capacitance on the motherboard of our laptop is not enough. When we use other computers and cannot cut off the power, a black screen will appear. Of course, not all computers will experience such malfunctions. This fault phenomenon still occurs when we use the laptop on other computers. At this time, we can troubleshoot the computer fault by checking whether there is a problem with the two capacitors on the computer motherboard. In some cases, if we use the computer on other computers, some USB slots on the host computer cannot be opened or the power socket cannot be opened, and some power lights will be on but the screen will be black. Therefore, we should remove these slots and plug them back into the computer when we need to use the computer.

3. Turn on the laptop, turn on the power control in the host control panel, and observe whether the light is on but not off, whether the light is on but not off, and whether there is a power outage. electricity, etc.

If not, you need to first check whether there is a power outage, and then check whether there is poor contact in the motherboard circuit between the notebook host and the motherboard. For example, if the ports of some common CPU motherboards are not connected backwards or the power indicator light is not connected, it will not light up but not go out. If it does not exist, it means that there may be an abnormal power supply on the motherboard of the notebook host, causing the power light to be on but the screen to be black. First open the power control panel of the host, then wind it from the side of the main control board to the front of the motherboard, and use the same form to wind it from the top of the host to the back of the motherboard. After winding, plug a No. 5 (5 A) or Connect the No. 5 (2 A) 5 V power cord and open the wire interface. If the light comes on but does not go out, it is likely that there is a fault on the motherboard. After cutting off the line, continue to press the "power button" and continue to turn the four 5 A screws to the right to observe whether the power supply is operating normally.

4. Check whether there is a power interruption in the power interface of the notebook host. If the power light is on but the screen is black when using the notebook computer, you can open the notebook computer and enter the system settings to restart or restart the notebook. Check the computer to see if the black screen appears when the power light is turned on.

If a black screen still appears after replacing the power plug, then you must consider whether the notebook's host power supply system is interrupted. At this time, you can proceed to the next step of replacing the power supply according to the situation.

5. Use a printer or USB flash drive to test the heat of the computer's CPU and graphics card. If there is no heat under normal circumstances, it means that the notebook hardware is of poor quality or the driver is not installed, causing the operation to run. Abnormalities in the software will have a greater impact. When purchasing the driver, you can check whether there is any abnormality in the running software caused by the installation of the driver software, which affects the normal use of your computer.

If there is a problem, it means that the notebook's motherboard circuit is damaged or there is a failure when connecting the power supply. At this time, you need to check whether the motherboard circuit is damaged and whether the plug is intact. There is no looseness, etc.; if the battery is damaged, you can use a hair dryer to heat the laptop battery, and then charge it after the battery cools down. In addition, check whether the laptop's monitor is faulty. If the computer makes sounds and flashes when the monitor is working normally, it means there is a black screen caused by a problem with the monitor. Finally, let me tell you that if the laptop host fails, we can try to check and determine the fault by looking at the power interface of the host. Warm reminder: If we encounter problems such as loud noise from the Lenovo laptop fan or dust entering the laptop case, we can not only use professional identification instruments to detect the cause of the fault but also the black screen phenomenon that may be caused by damage to the laptop itself, and we can also check the problem during the inspection. Disassemble the laptop case to see if the internal parts are damaged or due to mechanical wear and tear caused by prolonged use.

The above is all the content of this article. I hope it will be helpful to you. If you think that the Lenovo computer has a black screen and the power button is on, how to deal with it "Must read: Solution to a black computer screen and the power button and the light is on" if it is well written, remember it. Help recommend it to your friends and learn from it!

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