Lenovo laptop has a black screen when it turns on, but the power button is on, what is the problem?

1. Check whether all the plugs of the power supply and the wires on the adapter of the notebook are firmly inserted into their respective sockets, if not, it means that the contact with the power supply is poor, just press the plug down again.

2. If the indicator light is not yet on, the power adapter is being excluded.

The premise of bad is that there must be a problem with the power chip of the motherboard or a problem with a short-circuit breakpoint, and the motherboard is not powered on.

3. If the indicator light reacts, it just goes black.

Yes, this may be a problem with the graphics card or memory.

4. There is no display when the boot is normal, check whether the power cable, switch, and data cable of the display are correct, and it is also possible that the display is damaged.

Hello, it is recommended to clean the computer comprehensively.

There are several workarounds for the black screen:

1。Try to boot the computer, after the computer brand is out, press F8, press Enter, Enter, enter the safe mode, and start advanced.

options, the last correct configuration, Enter, Enter, press to try!

2。Enter safe mode, start normally, press enter, go to the desktop, and use antivirus to kill the whole disk!

3。Use: Defender conducts a comprehensive physical examination of the computer, detects and kills the Trojan horse, and repairs the computer.

4。Unplug the graphics card and memory sticks, erase them, use a brush again, clean the slots of dust and fans, replace the memory slots, and more!

6。If you still can't turn it on, you need to "one-click restore" or "reinstall the system"!

In terms of hardware, it is necessary to observe whether the hardware is installed properly, whether it is loose, deformed or broken. These conditions can cause your computer to shut down, especially if you pay attention to the graphics card and memory module.

The computer can't enter the system when it is turned on, it is generally stuck in the welcome interface and has been spinning, and the forced restart of the computer is still the same, this situation may be a problem with the driver installation, or there is a conflict in the program that starts at boot, and the Trojan virus may appear like this.

If there is a problem with the system, it is recommended to restore to the last correct configuration, and if it does not work again, it is recommended to reinstall the system.

Hard disk, memory, and graphics card can be checked.

If the power indicator is on, there is wind in the cooling fan port, but the display is still black, most of this situation is due to the internal line failure or hardware failure of the notebook.

In this case, it is recommended to use the external monitor of the computer, which is the monitor of the general desktop, connect to the external display interface of the notebook, if the display is normal, the possibility of damage to the motherboard and graphics card is ruled out. If it is abnormal, there is a problem with the motherboard or graphics card.

In addition to excluding non-motherboard and graphics card failures, it is a common LCD screen failure. You can just press the power button to start when you put your ear to the screen frame to listen, if there is a sizzling sound, and then there is no sound, it may be a problem with the high-voltage circuit board, if it has been silent, it may be a problem with the lamp.

Maintenance Method:

1. Do not use it in an unstable environment, such as in the car. This is very harmful to the hard drive, and can even make the hard drive scrapped. The same is true when the device is turned off.

When the power is turned off and needs to be turned on again, it is best to wait for a minute before turning it on. It is best to turn off the laptop for more than 20 seconds before moving the laptop.

2. Do not use it in an environment where the temperature is too high or too low, which has the greatest impact on the LCD and battery, and the low temperature should not be lower than 10 degrees Celsius, and the high temperature should not exceed 30 degrees Celsius.

3. The notebook should be kept away from magnetic materials such as microwave ovens and speakers, which will cause great damage to the hard disk and even make the data of the hard disk disappear. The memory is far away from electronic products such as mobile phones that can generate high-frequency signals.

4. Laptop cleaning: Take care of the laptop regularly, first of all, you should turn off the power of the laptop, and then remove the battery in it. When cleaning the LCD screen, it is best to gently wipe it with a soft cloth moistened with water that will not lint, and there is no need to buy a special laptop cleaner.

When cleaning the keyboard, you should first use a vacuum cleaner and a nozzle with the smallest and softest brush to suck up the dust between the gaps between the keys, and then wipe the keycaps with a soft cloth slightly damp with a damp surface, and wipe them dry with a dry cloth immediately after wiping one, remember, do not let the liquid seep into the inside of the case. Also, never use corrosive liquids to clean your laptop, let alone alcohol.

Please select under what circumstances does your computer appear with a black screen?

2. Then in the power options, change the display off and sleep status to never, and then we can take the message screen.

Method 2: The computer screen is closed by a shortcut key, we can use the FN+F7 key to open it.

Method 3: If it is caused by a malfunction of the computer, we restart the computer, press F8 continuously, select the safe mode to enter, and check and repair the computer.

Method 4: If it doesn't work, you can only reinstall the system.

The above are some solutions to the black screen of Lenovo notebooks, generally as long as the hardware is not damaged, the "ultimate**" reinstallation system can solve the problem.

You can try to enter the BIOS, if the BIOS can be displayed, it may be caused by a system problem, you can reinstall the system to try, if the BIOS cannot be displayed, it may be a hardware problem, and you need to check the hardware.

Estimate the system problem to reinstall it.

In this case, it is directly related to the hardware, and it is recommended that you perform the following operations:

Remove the battery on the back of the laptop, connect the computer with only the power adapter, and try to turn it on, if the boot is normal, then it is caused by poor battery contact or battery failure.

Only use the battery, do not connect the power adapter, if the boot is normal, then it should be caused by a problem with the power adapter or a short circuit in the power interface of the notebook.

Unplug the power cord, remove the battery, and press and hold the power button for 30 seconds without letting go. Try to boot up, if the boot is normal, then it is only caused by the abnormal BIOS of the motherboard.

Unplug the power cord, remove the battery, open the back cover of the memory, plug in and unplug the memory, wipe the gold finger part with an eraser, and plug it back in (don't reverse it).

If the above operations cannot solve the problem, it is recommended that the notebook be sent to the repair center for testing.

Summary. Dear We will be happy to answer your <>

The solution to the power key of Lenovo notebook is bright but black screen,1、Wake up the computer screen,The problem caused by the computer screen off,Just press any key of the keyboard,The computer will resume the display,2、The computer screen is turned off by a shortcut key,Just click the key combination FN+F7 to open the screen,3、Reinstall the computer system,The computer system file is damaged,If the computer cannot enter the black screen of the system,We can use the reinstall system tool to make a U disk to solve it。 [salute] [than heart] <>

<> what to do if the power button of your Lenovo laptop is on but the screen is black.

Dear We will be happy to answer your <>

The solution to the power key of Lenovo notebook is bright but black screen,1、Wake up the computer screen,The problem caused by the computer screen off,Just press any key of the keyboard,The computer will resume the display,2、The computer screen is turned off by a shortcut key,Just click the key combination FN+F7 to open the screen,3、Reinstall the computer system,The computer system file is damaged,If the computer cannot enter the black screen of the system,We can use the reinstall system tool to make a U disk to solve it。 [salute] [than heart] <>

<> Extended Information: Lenovo notebook refers to a Lenovo laptop. Lenovo notebook refers to the portable laptop produced by Lenovo Group.

Founded in 1984 by the Institute of Computing Technology of the Chinese Academy of Sciences with an investment of 200,000 yuan and 11 scientific and technological personnel, Lenovo Group has developed into a large-scale enterprise group with diversified development in the information industry. [salute] [than heart] <>

Is there a **? The boot sector of the DOS hard disk has not been started, it depends on whether it is a hardware problem or a software problem, if the boot station channel is in, it means that there is basically no problem with the hardware, it may be a problem with the hard disk system.

The above is the relevant information for you to query, please refer to it, I hope to help you Hello! Is there any other question I can ask you to help you with? We look forward to hearing from you again and wish you a happy life!

Common causes of a black screen on your computer:

1. Loose wiring, such as loose memory and graphics card, monitor wiring, power cord, etc. 2. Broken hardware, such as monitor, graphics card, motherboard, etc.

3. The black screen of the power failure due to overheating protection of the part, such as CPU overclocking 4, the system is broken, and the black screen of the English state appears.

2 2 The solution is to press a button or press the power button to wake up the computer.

There is no word, it may be that the line has fallen, whether it has fallen.

Is the screen broken? If it's good, it's a lifetime of opening the machine, and it's not.