Explaining the causes and solutions when the computer screen does not work or freezes

This time, we will explain the causes and solutions when your computer screen does not work or freezes.

If your computer freezes, possible causes include the following:

• Malfunction or failure of the main unit
• HDD malfunction or failure
• Malfunction of equipment such as monitor or mouse
• Insufficient memory
• Application malfunction
• Impact of viruses etc.
• System malfunction

Some of them are not big problems and can be resolved quickly, so let's check them one by one.

Causes and solutions for computer screen not working or freezing

If your computer screen does not work or freezes, the following may be the cause:

• In case of insufficient memory
• In case of HDD malfunction or failure
• If there is a problem with the application
• If you are affected by heat
• If you are infected with a virus, etc.

This article explains how to solve the problem when the computer screen does not work due to the above reasons.

In case of insufficient memory

If your computer screen does not work or freezes, it may be due to insufficient memory.

Memory is necessary to process a program, and if it is insufficient, the processing time may take longer and the program may stop working.

In this case, it would be best to use an application that matches the installed memory, or increase the memory to make it more durable.

Also, if you have resident programs running behind the scenes that are using up memory, disabling them may solve the problem.
If there are any unused items other than Windows-related, driver-related, and virus software-related items, try disabling them. Leave other programs you don't understand.

[How to disable resident programs]

1. Press "Ctrl" + "Shift" + "Esc" keys to start Task Manager.
2. Select the Startup tab.
3. Select the application you want to disable.
4. Select "Disable".

In case of HDD malfunction or failure

If your computer screen does not work or freezes, it may be due to a problem or failure of the HDD (hard disk).

HDDs read, write and store data on a daily basis, but they are said to reach the end of their lifespan in about 3 to 4 years. Deterioration of the HDD can cause your computer to freeze or slow down processing.

Considering the usage period of the HDD, if you think there is a possibility of deterioration or malfunction, we recommend that you back up your data as soon as possible. This is because if your HDD completely breaks down, you may not be able to retrieve your data.

In addition, data may become fragmented due to repeated reading and writing, slowing down processing.
Fragmentation means that each piece of data that was originally stored one by one is now stored separately. It takes time to search for data that is stored separately, and reading and writing becomes slow.

In this case, you may want to try defragmentation to clean up your data.
By default, defragmentation is executed periodically, but you can also do it manually using the method below.

[Defragmentation procedure]

1. Select "Start (Windows mark)".
2. Select Windows Administrative Tools.
3. Select "Defragment and Optimize Drive."
4. Select the appropriate drive.
5. Select "Optimize".
6. Select OK.

If there is a problem with the application

If your computer screen does not work or freezes, it may be due to a problem with the application.

If a particular application freezes while running, there may be a problem with the application itself, or the application is not compatible with the computer's memory or other specifications.

If it freezes, first start the task manager using the "Ctrl" key + "Shift" key + "Esc" key and end the process of the relevant application.
After that, try uninstalling the app and reinstalling it.

[How to uninstall an application]

1. Select "Start (Windows mark)".
2. Select "Settings (gear mark)".
3. Select "Apps".
4. Select the appropriate application.
5. Select "Uninstall".

If you are affected by heat

If your computer screen doesn't work or freezes, heat may be the cause.

Care must be taken if there are obstacles or dust in the heat exhaust area, as this may trap heat and cause thermal runaway.
If heat builds up, it will not only cause malfunctions such as freezing, but also damage and deterioration of parts.

In this case, try removing obstacles and dust from the heat exhaust area to improve ventilation of the computer.

If you are infected with a virus

If your computer screen does not work or freezes, it may be infected with a virus.

There are also viruses that put a load on the memory and CPU, which can cause the computer to freeze.

If you suspect that your computer is infected with a virus, you may want to run a scan using your antivirus software.

Causes and solutions when the computer starts but the screen does not work

If your computer starts up but the screen doesn't work, or the computer remains completely black, the following may be the cause:

• If the monitor is the cause
• If it is charged
• In case of system or BIOS malfunction

This article explains how to solve the problem when the computer screen does not work due to the above reasons.

If the monitor is the cause

If your computer starts up but the screen doesn't turn on, or the screen remains completely black, the problem may be caused by your monitor.

Check that the monitor is turned on and that the computer and monitor are properly connected. The screen may not be visible due to poor contact.

In addition, there may be cases where the screen does not appear on the monitor temporarily.
In this case, try turning off the monitor and then turning it on again, as this may solve the problem.

If the screen appears when connected to another monitor, the monitor may be defective.

If it is charged

If your computer starts up but the screen doesn't work, or the screen remains completely black, discharging the electrical charge may solve the problem.

You can discharge the battery by turning off your computer, unplugging it from the power outlet and disconnecting the battery, and leaving it for about 10 minutes.

If you don't know the cause, but the screen is black after startup, please try this method once.

In case of system or BIOS malfunction

If your computer starts up but the screen does not turn on, or the screen remains completely black, there may be a problem with the system or the BIOS program.

If the manufacturer's logo is not displayed, the BIOS may not be functioning properly.
The BIOS is the first program to start after the power is turned on, and is installed on a component called the motherboard, so if this component is malfunctioning, it will need to be repaired or replaced.

Also, if your Windows system freezes, running "Startup Repair" may solve the problem.
Startup Repair will run automatically by force shutting down your computer three times.

Causes and solutions when the computer screen does not move but the mouse does

If the computer screen does not work but the mouse does,Causes and solutions for computer screen not working or freezingIn addition to the problems explained in , the following are possible causes:

• In case of keyboard malfunction
• If the program is processing

This section explains how to deal with each cause.

In case of keyboard malfunction

If your computer screen doesn't work, but your mouse does, it may be because your keyboard is malfunctioning and it seems to be frozen.

Check that the keyboard is connected correctly and try reconnecting it if necessary.

If you have a wired keyboard, try re-plugging the connected cord, and if you have a wireless keyboard, check to see if the battery is dead.

If the program is processing

If the computer screen does not move but the mouse does, it may be because a program is processing and the computer is not accepting any operations, causing it to appear frozen.

If you click with the mouse or use the keyboard many times in this state, it may put a load on your computer, so please wait.

If there is no improvement after an hour, there may be other causes other than the update program being executed.

Causes and solutions when the computer freezes and the mouse does not work

If your computer freezes and your mouse doesn't work,Causes and solutions for computer screen not working or freezingIn addition to the problems explained in , there may be a problem with the mouse itself.

If you have a wired mouse, try reconnecting the cord, and if you have a wireless mouse, check to see if the batteries are dead, it's turned on, and the receiver is connected properly.

What to do if your computer freezes and won't turn off

If your computer freezes and you can't turn it off or shut it down, check for problems with the keyboard, mouse, or applications, and then try the shutdown method below.

• How to exit using the keyboard
• How to exit using the power button
• Termination method using an outlet

Please note that data may be corrupted upon exit.

In particular, data is being read and written while the HDD's access lamp is lit, so make sure the lamp is off before executing.

How to exit using the keyboard

If your computer freezes and won't turn off, try using a keyboard shortcut to turn it off.

Press "Ctrl" + "Alt" + "Delete" to bring up the menu, press "Tab" and select Power to perform a shutdown.

In some cases, this method may not be effective, so please check the method described in the next section.

How to exit using the power button

If your computer freezes and won't turn off, you can force it to shut down by pressing and holding the power button.

Please note that if you have any data in progress, it may not be saved.

Since this is different from the normal termination method, there is also a risk of data corruption.

Termination method using an outlet

If your computer freezes while you are using a desktop computer and you cannot turn it off, you can also turn it off by unplugging it from the outlet and cutting off the electricity.
For laptops, a similar solution is to remove the battery pack.

However, if the power is suddenly unplugged when the power should normally be turned off during a shutdown procedure, there is a risk of data damage.

Please use this method only if the other methods do not resolve the issue.

Summary: Explaining the causes and solutions when the computer screen does not work or freezes

This time, we have explained the causes and solutions when the computer screen does not work or freezes.

If your computer freezes, it may be due to being overloaded or overheating.
It is also possible that the problem is caused by the HDD rather than the computer itself, or by a malfunction in a peripheral device, so let's check the parts you know first.

If you panic and turn off the power because your computer freezes, the data on the HDD may be damaged.
If you have no choice but to force quit, make sure that the access lamp is not lit before doing so.