Laptop won't turn on for a long time, black screen. The laptop screen does not light up when turned on. If the display shows a black background with a cursor

Every third laptop owner is faced with the problem of a “black screen” upon startup. There may be a lot of reasons that cause the problem, but before contacting a computer repair service, we recommend that you perform diagnostics yourself. We will talk about this below.

Causes of malfunction

The reasons why the laptop screen does not work can be divided into several groups:

1. Damage to the south or north bridge of the motherboard due to mechanical interference or overheating of the device.
2. Problems with the central processor or video card.
3. Broken cable, laptop matrix or backlight.
4. The RAM malfunctioned or fell out of the connector.
5. Malfunctions in the computer hardware settings.
6. The battery has stopped working.

In the first three cases, repair or replacement of parts is necessary. You can try to fix the malfunctions described in the remaining paragraphs yourself.

Advice! If the laptop turns off after a long time of operation and shows no signs of life, it is likely that it has overheated. Check that nothing is blocking the air outlet, clean it from dust, and then turn it on.

Elimination

Important! Determine whether the laptop starts when you turn on the power button (you can hear the noise of coolers, the hard drive, whether the LED lights up). Your further actions depend on this.

Battery check

If the laptop shows signs of life when turned on:

1. Connect it to a 220V network, check if there is voltage (look at the laptop charge indication).
   
2. There is an indication, but the laptop does not turn on - disconnect the charger from the laptop.
3. Pull out the battery as shown in the picture.
   
4. Clean clogged contacts.
   
5. Press and hold the power button for 20 seconds to remove any residual charge from the motherboard and laptop components.
   
6. Connect the charger and turn on the device, check the screen operation. If it works, install the battery and check the operation again. Laptop won't turn on? We recommend replacing the battery.

The laptop “comes to life” when it starts up and there is a personal computer screen or a TV with an HDMI output at hand - check the operation of the laptop, perhaps the fault is really in the laptop:

Advice! The cause of the malfunction may be unstable Windows operation. If so, or troubleshoot through the command line. Enter the command sfc /scannow

BIOS Settings

Laptop users facing the black screen problem were helped by resetting the BIOS settings to default. If the computer shows signs of life (the coolers are working), connect it to a monitor or do the procedure blindly:

1. Turn on your device.
2. After turning on, press the F10 key (enter BIOS) for 10 seconds.
3. A menu will open, wait and press F9.
4. Press Enter (return to original settings).
5. Press F10 (exit BIOS)/
6. Press Enter to save your changes, exit, and restart your computer.

Important! If the previous methods were unsuccessful or your device shows no signs of life, try another option below.

Checking RAM sticks

There is a possibility that the motherboard has stopped recognizing the RAM:

1. Turn off the laptop and take out the charger, turn it over, unscrew the screws.
   
2. Open the back cover.
   
3. Carefully move the latches in different directions to remove the RAM.
4. Change the connector (if several) or swap the OP.
5. Insert the OP back at an angle of 45% and lightly press from above. The clamps will do all the work themselves.
   
6. Check the connections of other devices (hard drive or SSD stick).
7. Close the lid, connect the device to the network and check its operation.

Hello, dear friends! Quite often there are cases when a “black screen” appears when you turn on the laptop. Such a screen is also ironically called the “Malevich square”, but there is little irony, since this phenomenon can indicate either a minor problem or a serious malfunction.

All possible causes, as well as ways to eliminate them, will be presented in this material.

Possible causes of laptop malfunction

In reality, there are quite a few reasons why a black screen appears on a laptop, but in this article we will look at the main ones that users encounter most often. These reasons can be divided into the following groups:

— Defects and damage to the motherboard bridges, which is possible due to mechanical intervention by the user or significant overheating of the device.

— Malfunctions of the central processor and video card.

— Damage to the cable, backlight and matrix of the device. Damage to the cable can be reported mainly on outdated laptop models.

— Failure of RAM.

— Problems with computer hardware settings.

— There are problems with the health of the battery, but such a problem can be detected quite simply. In this case, the laptop simply will not start.

If problems arise with the motherboard, processor, video card and monitor cable, you will need to replace these devices with new ones. At the same time, it is important to determine what exactly has failed so as not to make a mistake in replacing the damaged device. You can try to eliminate all other defects yourself, which is what we will pay attention to in this material.

It is important to know! Very often, users do not control the condition of the air ducts, which become clogged very quickly. In this case, the computer may turn off automatically due to overheating, and it can be restarted only after the processor has cooled down.

Black screen when turning on the laptop - Troubleshooting Features!

If, when you press the power button on the laptop, there are no signs of life: the LEDs do not light up, the cooler does not hum, then the cause is most likely a faulty battery. To eliminate this reason, just connect the laptop to the network and try to start it.

How to check the health of the battery?

1. If when you press the power button the laptop does not show signs of life, then you need to do a number of the following manipulations:

2. Connect the device to a 220 Volt network, and then check whether the battery is receiving a charge. There is a corresponding light indicator on the laptop for this.

3. If the battery charge indicator lights up, but the device does not start, then you need to disconnect the charger.

4. You must also disconnect the battery from the laptop. How to do this depends on the laptop model, although modern devices are equipped with non-removable types of batteries.

5. If after removing the battery there are clogs in the contactor or oxidation, then they should be cleaned immediately. This is done with a cloth, but in no case with sharp metal objects.

6. Without connecting the battery, you need to press the power button of the laptop, and then hold it in this mode for 20 seconds. This will remove residual stress from the motherboard and hard drive.

After this, you should connect the charger and check the functionality of the screen. If the computer starts to function, then you need to install the battery and check its operation from an independent power source. If the laptop does not start on battery power, it should be replaced.

You can check the performance of your computer using a stationary monitor or a modern TV. Laptops have a special VGA or HDMI output, with which you can connect your computer to a TV or monitor. The principle of verification consists of the following actions:

Initially, you need to take a special VGA-VGA or HDMI-HDMI cord. With their help, you need to connect your computer to a TV or desktop monitor.

After connecting, the “Desktop” of the laptop should appear on the TV or monitor. If this does not happen, then make sure that the monitor is connected to a 220 V power supply.

If a picture of the computer loading appears on the monitor, then the reason why the laptop screen does not display the image is hidden in the problem of the cable.

Features of BIOS settings

If a black screen appears after starting the laptop, then you need to reset the BIOS settings. If the computer starts, but a black screen appears, then resetting the BIOS settings should be done blindly or by connecting a stationary monitor:

1. Throughout the startup process, you need to press the F10 button until the BIOS window appears.

2. When the menu opens, press the F9 key.

3. After this, press the Enter key, which will automatically roll back the BIOS settings.

4. After this, you need to press F10, then the Enter key and restart the computer.

5. If after this the desktop image does not appear on the laptop screen, then you can resort to another option to correct the situation.

Checking the health of RAM

A black screen may appear due to a failure of the RAM sticks, that is, the motherboard does not see them for some reason. To correct the situation you will need to perform the following steps:

— Disconnect the laptop from the network and remove the battery.

— Unscrew the screws securing the protective cover on the back of the laptop.

- After opening the back cover, you can see the following picture as below.

It’s not difficult to recognize the RAM strips, but if anyone still doesn’t know what they look like, you can enter them in the Yandex or Google search bar.

To remove the RAM sticks, you will need to move the latches in different directions, as shown below.

After removing the OP strip, you need to clean the contacts, and then install the part in place.

After installing the bar in place, the clamps will automatically lock it in the correct position.

Once the cover is removed from the laptop, you can also check the hard drive and other devices of the laptop for defects. Of course, it is problematic to visually identify defects, so you can contact a service center.

After completing the above steps, you need to return the cover to its place, and then start the device.

The reason that the computer does not start may be a banal jamming of the device’s start button. To do this, you need to make sure that nothing prevents the button from starting the computer. You may need to clean your computer to resolve this issue. If the user does not know how cleaning is carried out on his own, then it is better to use the service of service centers.

In conclusion of today’s episode “Black screen when turning on the laptop”, it is worth noting that the proper operation of the laptop depends on how the user handles the device. Frequent overheating, improper placement of the device, constant and careless handling of the laptop cover, as well as the lack of preventive measures will contribute to serious breakdowns. If you don't want your computer to start malfunctioning in the near future, monitor its condition and treat it as if you had recently bought it.

Video tutorial on how to fix a black screen on an Asus laptop

In this article, we will look at the most common problem associated with Asus laptop. We'll talk about what to do if your device suddenly stops turning on, and you only see a black screen in front of you.

The reasons can be very different, we will look at several ways to fix your Asus laptop yourself.

Step-by-step instructions for fixing a black screen on an Asus laptop

ATTENTION!!! The methods described below will not help you if the device has been subjected to mechanical stress, for example, flooded with liquid. If you are not confident in your abilities, then it is better to contact a service center, where they will first figure out the cause of the laptop malfunction and then fix it.

Method 1. Reset hardware settings.

Step-by-step instruction:

• turn off the laptop, disconnect the charger from it and remove the battery located on the back of the laptop;

• hold down the laptop power button for 20 seconds to directly reset all settings;

• return the battery and charger to their place;
• then turn on the laptop, selecting normal boot.

If this method does not suit you, then try the next one.

Method 2. Laptop display.

ATTENTION!!! As a rule, a faulty display is indicated by hearing the laptop running when you turn it on, but the screen remains black.

Method 3. Through BIOS settings.

To implement this method, you just need to reset the settings in the BIOS.

Step-by-step instruction:

• turn off the computer;
• then, including, before loading, press the “Delete” or “F2” button several times (in newer Asus models, press “F10”);
• wait for the BIOS window to appear;

• then press “F9”, then “Enter”, thereby returning the device to factory settings;

• to save changes, press “F10”, then “Enter”;
• If everything is done correctly, the laptop will automatically reboot.

If this does not bring the device screen back to life, move on to the next method.

Method 4. Reinstall the RAM module.

ATTENTION!!! This method may be effective if liquid gets on the device. Be sure to completely dry the laptop before performing any actions.

Step-by-step instruction:

• turn off the laptop, disconnect the charger from it and remove the battery located on the back of the laptop;

• Unscrew the RAM storage container using a screwdriver. If you have a model like the one below, you will have to unscrew the entire back panel of the laptop;

• bend the fasteners on both sides of the RAM and take out the RAM;

• Wipe it carefully with a dry dust cloth. You can also swap the connectors;

• put the RAM in place by pressing slightly from above until you hear two clicks;
• we assemble the laptop, insert the battery into place and connect it to the network;
• If you did everything correctly, the laptop will turn on.

We hope that our step-by-step instructions helped you deal with this problem. If you still fail to bring the device back to life on your own, our service center specialists are always ready to repair your laptop of any complexity in the minimum amount of time.

Screen failure is one of the most common problems faced by laptop owners. But don’t despair if you have a similar problem. With the right approach, you can return your computer to a working state using simple methods.

Laptop monitor does not light up when turned on - causes of malfunction

First of all, it is worth noting that problems with the laptop screen can be of several types:

• the monitor is filled with a gray tint;
• the image is faintly visible;
• There is no signal at all.

All of these problems can occur due to the failure of one or more hardware components. The most common causes of malfunction are:

• damage to the cable or matrix connector;
• failure of the laptop matrix (usually due to a burnout of the decoder);
• incorrect operation of the video card;
• damage to the screen matrix inverter;
• Incorrect operation of the backlight.

In addition, the monitor often does not light up when the laptop is turned on for one of the following reasons not related to the breakdown of computer components:

• the key to turn off the screen light is stuck (this function is tied to one of the buttons on the keyboard from F1 to F12, the value may differ depending on the brand and model of the laptop);
• The screen brightness level is set to zero;
• incorrect installation of the RAM module or broken contacts;
• hardware settings failure.

Diagnostic methods and ways to solve problems with the monitor

Checking the Brightness Level

If the black screen lights up when you turn on the laptop, then first check what level the monitor brightness is set to. This function is controlled using two of the twelve function keys F1 to F12.

Diagnostics of the screen off button

If the problem persists, you should make sure that the button responsible for turning off the monitor lighting is not stuck. This often happens due to sweet liquids getting on the keyboard. A thin needle or toothpick can help. Use one of these tools to return the button to its correct position.

Connecting an external monitor

If the above methods do not help, then you should resort to diagnostics by connecting an external monitor. To do this, you need to connect a powered computer monitor (or a TV that has the mentioned connectors) to the laptop via the VGA or HDMI connectors using the appropriate cable.

If an image is displayed on an external monitor, then we can say with full confidence that the cause of the breakdown is the failure of one of the laptop hardware elements. To fix the problem, you cannot do without contacting a service center to carry out serious repairs, which only highly qualified specialists can do.

Resetting hardware settings

If there is also no signal on the connected external monitor, you can try resetting the hardware settings. This is done as follows:

1. The laptop is disconnected from power and the battery is removed;
2. press the power button and hold for 20 seconds;
3. the battery is inserted, the power is connected;
4. The laptop turns on and the normal operating system boot is selected.

Reinstalling the RAM module

Sometimes the image stops being displayed on the screen due to incorrect installation of RAM. Partial disassembly of the laptop, removing the memory module and reinstalling it correctly can help.

All of the above methods are good for initial diagnosis and help in eliminating simple causes of the malfunction. Keep in mind that in order to avoid unwanted consequences, it is recommended to entrust computer repair to professionals.

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If your laptop screen does not turn on, then the first thing you should try is to reset the hardware settings. If this does not help, then you will have to look for other causes of the problem, which may be so serious that you cannot do without a trip to the service center.

Reset

A hard reset helps in most situations where the screen does not work. To execute it:

1. Disconnect the charger from the laptop.
2. Remove the battery from the laptop.
3. Remove any residual charge and reset the hardware by holding down the power button for 20-25 seconds.
4. Place the battery back into the laptop and connect the charger.

If a window appears asking you to select a boot mode after an incorrect shutdown of the device, select the normal Windows startup.

Checking the laptop display

If after resetting the hardware settings there is still no image on the screen, then try to determine which component has failed: the video card, matrix or other part of the display. An external monitor will help you do this. For example, on the ASUS website in the support section it is recommended to do the following:

1. Connect an external monitor to your laptop using the existing interface - HDMI or VGA.
2. Turn on your laptop. Using the combination Fn+F8, select broadcasting the image through the connected monitor.

If no image appears on the external screen, then the problem lies in the operation of the video card. This is also true for laptops from Lenovo, Acer and other manufacturers. If the picture is displayed on the monitor, then you should further look for a problem in the laptop display. The check should be carried out if the laptop's fan is noisy, the indicator lights up, or there are other signs that the laptop is turning on. If there is nothing like that, then perhaps the problem is not in the display - the entire laptop is not working.

Resetting BIOS Settings

If the problem occurs after changing the BIOS settings, you can try rolling them back to the factory state. Using a keyboard to do this will be problematic, but possible. The BIOS has hotkeys that are responsible for performing certain functions. A factory reset is usually done using the F9 key.

In theory, you can enter the BIOS by pressing the Delete key, then reset the settings (F9) and save the configuration (F10). But in practice, there is a high probability of missing the right moment, so it would be wiser to reset the settings by removing the CMOS battery, which stores the BIOS settings.

The main disadvantage of this method is the need to disassemble the laptop. But you will be sure that the BIOS settings have been reset, and if the cause of the black screen was incorrectly set parameters, the problem will be fixed.

Reinstalling the RAM stick

If the problem occurs after cleaning the laptop, then you should disassemble the laptop again and make sure that you installed all the modules correctly and connected the necessary cables. Therefore, for proper disassembly/assembly of a laptop, it is recommended to use the manufacturer’s manual - then the likelihood of an error occurring is significantly reduced.

In some cases, reinstalling the RAM stick can help solve the problem of no image on the laptop screen. This is especially true if liquid was spilled on the laptop’s keyboard, or it was left in a damp room for a long time, after which malfunctions occurred.

After reassembling the laptop, try turning it on again. If the black screen remains, although the laptop turns on and continues to work without an image on the display, then contact a service center. Possible causes of the problem:

• Damage to the display cable.
• Keyboard short circuit.
• Inverter failure.
• Backlight lamp failure.

These faults are unlikely to be resolved on your own; qualified assistance using special tools is required. The worst thing that can happen to a laptop is the motherboard failure. But then he will not show any signs of life. In any case, diagnostics at a service center will reveal the exact cause.

Problems resuming from sleep mode

If the screen remains black when resuming from sleep mode, the first thing you should do is check your video card drivers. The software must be the latest version and suitable for the system. You can download the latest drivers on the laptop manufacturer's website.

In some cases, the problem is caused by input devices that do not support Windows sleep mode correctly. Exiting sleep is done using the touchpad (mouse) or keyboard. If an external device is connected, it may block the laptop from waking up. To fix this flaw:

Save the configuration by clicking "OK". Do not prevent the mouse and keyboard from waking up the laptop at the same time, otherwise you will not be able to wake the computer from sleep. Set the ban on both devices in turn, checking if there is a positive effect.

Laptop overheating

If the screen on your laptop goes blank during operation, then most likely you are faced with overheating of the equipment. First of all, you should check the temperature of the video card. Use the free Speccy utility for this.

If you see that the video card’s temperature is too high (you can see the maximum permissible value in the specifications on the manufacturer’s website), then you should check the laptop’s cooling system. Sometimes just cleaning the cooling system is enough, but if the installed coolers are not powerful enough, then try using a cooling pad or installing more powerful fans.