What should I do if the computer screen goes black? But the computer s switch is still on.

Change computers, your configuration is not enough for your needs.

1. Please try the function key to increase the brightness of the screen, turn on and off the toggle display, and avoid the screen brightness being too low or the black screen of the computer will not be displayed because the screen has been turned off.

2. Boot up and enter the BIOS interface to check if it is displayed normally?

1) If the BIOS interface is not displayed with a black screen, it may be a hardware problem with the computer, please bring the machine to the service center for testing.

2) If the BIOS interface is normal, please try to restore the default value in the BIOS interface, save and exit, and restart the computer.

If it does not work, it may be caused by a system or driver software problem, try to restore or reinstall the system after backing up the data to solve the problem.

3. Connect the external display of the notebook to switch the display;

1) If the external monitor is displayed normally, please uninstall the graphics driver and reinstall it;

And make sure you have installed any updates or other programs in the near future? If so, please uninstall the installed updates and recently installed program software through [Control Panel] - [Programs and Functions].

2) If the external monitor is not displayed, or you do not have the relevant display equipment for testing, it is recommended that you take the machine to the service center for testing and confirmation.

4. Please confirm whether you have installed memory or other hardware? If so, please remove the additional memory and other hardware before turning on the computer to confirm.

If you still can't solve the problem through the above methods, please bring the machine to the nearest service center for relevant testing by engineers.

Here's how: You can take the following exclusion methods to solve the problem: First, check whether the power supply of the connected laptop is good and whether the power indicator is on.

If the power indicator is on, the cooling fan port is windy, but the display screen is still black, most of the cases are due to the internal wiring fault or hardware failure of the notebook, such as loose internal memory modules of the notebook, graphics card failure, and display panel failure. At this time, it is recommended that you use an external monitor on the computer, that is.

Hello, for this case of yours.

If the power indicator is on, the cooling fan port is windy, but the display is still black, in this case, most of the cases are due to the internal line failure or hardware failure of the notebook.

If everything is displayed in order, the possibility of damage to the motherboard and graphics card is basically ruled out. If it is abnormal, there is a problem with the motherboard or graphics card.

The power screen is black, but there is a sound to determine that you can enter the system normally, try to connect an external monitor to see if the output of the graphics card is normal, if you connect an external monitor to turn on and display normally, it means that it is a problem with the LCD screen or cable of the notebook.

In short, you check to see if there is a problem with the above.

Then find out where it went wrong.

Targeted solutions.

Precautions for the use of notebooks: 1. Usually reduce the possibility of the screen being exposed to the sun. Try to close the curtains during the day to prevent the screen from being exposed to sunlight and the temperature is too high, which will accelerate aging.

2. Do a good job of daily cleaning. In daily use, it is close to the notebook, so that the screen will inevitably leave a variety of stains, so it is necessary to do a good job of cleaning the notebook screen, you can use a cloth to wipe, and the dust can be removed directly.

3. Reduce the brightness, which can effectively prolong the service life. During the day, it is enough to open 1-2 grids, and it is good to open 2-3 grids at night, and then when you turn on the machine, sometimes there is a default choice, the screen is particularly bright, remember to turn it back.

Directly press and hold the Ctrl key + Shift + Delete and launch the Task Manager. Close the app that is running. If the screen is still black, then directly press and hold the power to force the shutdown and then turn it back on.

The power switch of the black screen of the computer is on, it may be that the computer screen is broken, and you need to go to some station of the computer to repair it.

This one is actually that he enters a dormant state, you can wake this up by hitting the keyboard buttons casually, you can set it in the management of the clerk and do not need to go directly to sleep, otherwise it will be turned on directly, otherwise it will not be in this situation if it is turned off.

Hello! Tap any key on your keyboard to turn on the screen.

The laptop switch is on, but the screen is black for the following reasons:

1. The laptop system is suspended (turn off the automatic sleep after entering the system).

2. It may be that the notebook memory module is in poor contact.

3. The pen and pencil belt are burned out or the graphics card chip is burned out.

The laptop switch is on, but the solution to the black screen:

1. Press a button on the keyboard of your Lenovo laptop to check whether it is activated to remove the computer from hibernation.

2. If the screen is on, it means that the screen off time is too short, and the user can use the keyboard combination shortcut key "Quiet Win+I" to open the Windows settings window.

3. Click the "System" option to open, find "Power & Sleep" in the list on the left, find "Screen" and "Sleep" in the pop-up options on the right, and set all to "Never" to fix them.

4. Or open the control panel, find "Power Options" and "Change Plan Settings" in turn, and then you can set the time to turn off the monitor. <>

First of all, it is recommended to shut down, cut off the power, press and hold the power button for more than 5 seconds, open the chassis and plug in the memory module again.

and the graphics card, give the computer a full clean of dust, and replace the motherboard battery. When the computer is turned on, the LCD screen.

When it lights up, the screen goes black.

Yes, this is a problem with the LCD screen, including two types: dark screen failure and black screen failure. The first type: dark screen failure: when the LCD is turned on.

Light it up, it's a black screen, first try to take care of the screen with a flashlight, see if you can see the image, if you can see the image, this is the dark screen failure, most of them are the problem of the lamp. This is due to: the capacitor bulge at the output end of the power supply circuit part, the phenomenon of leakage, or the short circuit of the high-voltage package, the open circuit of the high-voltage coil, the damage of the adjustable resistance, the breakdown of the switch control tube, or the damage of the lamp, will appear this kind of boot light, immediately dark screen phenomenon, the lamp is the most likely to be damaged.

Solution: Replace the lamp. The second type:

Black screen failure: When the computer's monitor lights up when the computer is turned on, the screen goes black. If the flashlight does not see the image on the screen, it is a typical black screen failure.

Generally, the black screen is due to the failure of the power supply circuit and the driver board circuit, such as the large filter capacitor of the power supply circuit.

There is leakage, bulging, leakage, performance degradation of the power supply ** chip, short circuit inside the power supply shutdown tube, and filter electrolytic capacitors at the output end of the power supply.

There are phenomena such as bulging, leakage, and discharge, as well as the performance of the MCU chip driving the circuit is reduced, and there is a problem with the power supply stability voltage regulator, and there will be a black screen failure. Solution: Repair the power circuit, drive circuit and components mentioned above.

Summary. It may be that your computer is asleep and you try to wake it up by pressing the power button or the keyboard spacebar. If it is not in the sleep state, it may be that there is a bug in the system that causes the computer to freeze or freeze, try to force shut down and restart. Here's a closer look:

How to solve the problem that the laptop screen is black and the power switch is still on?

It may be that the computer is asleep and try to wake up by pressing the open script machine key or touching the space bar of the keyboard. If it is not in the sleep state, Zixiao may have a bug in the system that causes the computer to freeze or freeze, try to force shut down and restart. Here's a closer look:

1. When the computer is in sleep mode, the computer will run in a low-power state with lead cleaning, and the display screen will be turned off at this time. If you need to wake up, you can press the open inspection machine key or the space bar of the keyboard; 2. The computer should have a bug in the system that causes fake death or a good crash, and the computer is still running at this time, and the display screen has no content. You can force the shutdown and press F8 to enter the advanced boot mode after restarting, and select the [Last Correct Configuration] option to enter the system.

Hope it helps.

Forced shutdown is not possible.

Just click on the time to try it.

Long. Press and hold the power button of the computer case or notebook for more than 3 seconds, and you can force the shutdown instantly; Or press and hold the three keys [Ctrl] + [Alt] + [Delete] at the same time, and select the Crack Shutdown icon to turn off the computer;

You can also press and hold [Ctrl] + [Alt] + [End] to power off instantly.

1. If the keyboard and mouse are not responding, and the hard hole fiber disk reading and writing light is not always on, you can press and hold the [Power Button] of the computer case or notebook, and holding it for more than 3 to 10 seconds will force it to shut down; 2. Press and hold the three keys of [CTRL+[ALT]+[Delete] at the same time, win10 system in the menu of high trembling open, click the [Shutdown] icon in the lower right corner3, [CTRL] + [ALT] + [END], this method can achieve instant Qi guess shutdown, but the damage to the hard disk is relatively large.

Black screen causes: 1. Caused by power supply.

Damage to the host power supply or poor quality of the host power supply often causes our black screen failure. For example, after we added some new devices, the display had a black screen failure, and the quality of the power supply was not good, and the lack of power was the main cause of the failure.

2. Caused by accessories.

Poor quality or damage to computer accessories can also easily lead to a black screen failure of the monitor. For example, problems with the motherboard (and the CMOS of the motherboard), memory, graphics card, etc., may definitely cause a black screen failure.

3. Connecting accessories.

The main cause of black screen failure is the incorrect or loose connection between the memory, graphics card, etc., and the motherboard. Moreover, if there is a problem with the connection between the graphics card and the monitor, this kind of failure may also be caused, until the AT power supply is not plugged in correctly, and even if the hard disk or optical drive data cable is reversed, it may also cause the boot black screen failure.

Computer stuck, power off, long-term use of the computer, full load operation, etc., the system will be damaged, repeatedly switch on and off, or not easy to use, it is recommended to restore the system or reinstall. As long as you avoid the problems mentioned at the beginning, you won't have such problems with your computer.

If it's a desktop, it's likely to be a bad contact, and if it's a laptop, it's probably because there's a problem with the screen.

Hello dear<>

This situation is caused by a problem with the internal hardware of the computer. The specific analysis may be due to the following reasons:1

Faulty display or display signal line. If the monitor or the signal cable connected to the monitor is damaged, it will result in no screen display. You can try connecting an external monitor to see if the display is normal, or change the signal cable of the monitor for testing.

2.The power supply is insufficient. If the power management module or other power lines fail to provide the power required by the system, the screen will be black.

Use a voltmeter to check if the power supply outputs a normal voltage. 3.Motherboard failure.

The motherboard is the core component of the computer, and if it fails, it will affect the start and operation of the system. You can check whether the indicator light on the motherboard flashes as usual when you turn it on, which can preliminarily judge whether the motherboard is in good condition. 4.

CPU or memory failure. CPU or memory is also a key part of the computer, and if there is a failure, the system will not boot normally. You can try resetting the CMOS information, or replacing the CPU and memory to test.

5.Hard drive failure. The operating system requires the hard disk to complete the boot and run, and if the hard drive is corrupted and cannot read the system files, it will result in a black screen.

You can detect if the cable of the hard drive is loose, or try to detect the hard drive by using the PE system boot. 6.Other possible causes.

In addition, abnormal BIOS settings, overheating of the thermal chip, etc., will also cause a black screen. It needs to be comprehensively judged according to the operation of other hardware. The black screen immediately after the computer presses the power button is usually caused by a critical internal hardware issue such as the monitor, motherboard, CPU, memory, hard disk, etc.

It is necessary to carry out targeted detection and troubleshooting of each hardware, such as using external displays, voltmeters, replacing key components, etc., to test and judge, find the root cause of the fault, and repair or replace the corresponding hardware before resuming normal use. If you still have questions or need help, you can contact my technical support.