How to resolve when your computer does not work or start due to a black screen error

This time, we will explain what to do if you encounter a black screen error on your computer.

We have explained what to do if your computer stays on a black screen or won't start, or if you see white text or a cursor on a black screen, we hope you find this useful as a reference.

What to do if your computer screen is black and the power is on

If your computer is supposed to be on, but the screen is completely black, or if the manufacturer's logo does not appear, here are some things to do.

• Check the power supply, battery, and cables of your computer and monitor
• Try unplugging or replacing the monitor.
• For laptops, discharge
• For desktop computers, clear CMOS
• Try disconnecting all peripherals
• Try force quitting and restarting

Check the power supply, battery, and cables of your computer and monitor

If your computer is supposed to be on, but the screen is black, first check to see if your monitor is turned on.

Especially with desktop computers, the monitor may not be turned on.

Also, make sure that the battery and cables are securely connected.

Try unplugging or replacing the monitor.

If your computer is turned on but the screen is completely black, you may be able to resolve the issue by unplugging and reconnecting the monitor, or by replacing it with a different monitor.

If replacing the monitor resolves the problem, the monitor may be damaged or defective.

If replacing the monitor does not resolve the issue, there may be other causes and you may want to try other solutions.

For laptops, discharge

If your laptop's screen is black even though it's supposed to be on, it may be due to static electricity, so discharging the computer may solve the problem.

Turn off your laptop, remove the power cord and battery, and wait a few minutes to a few hours. Then, restart your computer and check if the problem is resolved.

For desktop computers, replace the CMOS battery and clear the CMOS

If your desktop computer is supposed to be turned on, but the screen is completely black, and the following conditions apply, you may suspect that the CMOS backup battery has deteriorated.

• There is no sound from the computer
• power lamp is on
• CPU and fan work
• If there is an HDD access lamp, it lights up but goes out immediately.

In this case, replacing the CMOS backup battery or clearing the CMOS may solve the problem.

However, clearing the CMOS and replacing the backup battery must be done with the computer open. You may damage your computer or lose data when you open it, so if you are unsure, it is best not to touch it carelessly.

Try disconnecting all peripherals

If your computer is turned on but the screen is black, unplugging all peripherals may fix the problem.

You may also try disconnecting all peripherals, including the mouse and keyboard, and restarting the computer. If a problem occurs when connecting a specific peripheral device, it may be better to update the driver for that peripheral device or replace the peripheral device itself.

Try force quitting and restarting

If your computer is turned on but the screen is black, force shutting it down and restarting it may fix the problem.

This method is effective when the problem is caused by a temporary error.

To force shutdown, press "Ctrl" key + "Alt" key + "Delete" key → select "Shutdown".

What to do if your computer has a black screen and white text appears, but you cannot proceed to sign in

If you turn on your computer but see white text on a black screen and cannot proceed to sign in, here are the solutions.

• Check if the memory, HDD, and SSD are recognized in the BIOS (UEFI)
• Check to see if there is a problem with your hard disk or SSD
• Try booting in safe mode
• I'll wait a while
• Check the HDD access LED

Also, in this case, it seems that everything other than the hard disk or SSD is fine.

Check if the memory, HDD, and SSD are recognized in BIOS (UEFI)

If you turn on your computer but see white text on a black screen and cannot proceed to sign in, checking whether the memory, HDD, or SSD is recognized in the BIOS may help resolve the issue.

[How to check whether the BIOS recognizes memory, HDD, or SSD]

1. Start the BIOS (Press the BIOS startup key when starting the computer: The startup key differs depending on the manufacturer.)
2. Check if the hard disk model name and capacity are displayed on the BIOS screen.

If the hard disk is not recognized using this method, it is suspected that the hard disk is malfunctioning, and you will need to take measures such as turning off the power and replacing it.

Check if there is a problem with your hard disk or SSD

If you turn on your computer but see white text on a black screen and cannot proceed to sign in, checking to see if there is a problem with your hard disk or SSD may help resolve the issue.

[How to check if there is a problem with your hard disk or SSD]

1. Select Explorer (folder mark)
2. Select the appropriate drive
3. Right click and select "Properties"
4. Select the “Tools” tab
5. Select "Check"
6. Select "Scan Drive"

Try booting in safe mode

If your computer displays a black screen with a cursor, you may want to try starting up in safe mode, which may help resolve the issue.

[Start your computer in safe mode and how to resolve the issue]

1. Start your computer
2. Immediately after startup (even if the screen is not displayed), press and hold the power button to shut down.
3. "Preparing automatic repair" is displayed
4. "Diagnosing your PC" is displayed (just wait)
5. The "Automatic Repair" screen will appear.
6. From advanced options to troubleshooting
7. Select "Startup Settings" from the advanced options in Troubleshooting
8. Select "Restart"
9. computer restarts
10. Select the number corresponding to "Enable Safe Mode" from the menu using the keyboard
11. After booting into safe mode, uncheck and remove programs that may be affecting your computer.
12. In addition, scan in conjunction with updating antivirus software, etc.

I'll wait a while

Even if you turn on your computer, white text appears on a black screen and you cannot proceed to sign in. If there is a problem with the display driver, it may be fixed by waiting for a while.

Check the HDD access LED

If you turn on your computer but see white text on a black screen and cannot proceed to sign in, check the HDD's access LED.

If the LED is lit or blinking, please wait for a while.

Create and repair startup disk in Windows 10, 11

If your computer remains stuck on a black screen or won't start, there is a workaround to repair it by creating a recovery drive.

The following sections explain the specific steps.

We will also explain how to perform repairs such as system restore.

• How to create a recovery drive
• startup repair
• Perform a system restore
• Repair MBR

How to create a recovery drive

If you have a recovery drive, you can boot your computer from USB and perform repairs.

You can also create a recovery drive on another computer. It is best to use the same model of computer as possible to create the recovery drive.

[How to create a recovery drive]

1. Select "Start (Windows mark)"
2. Select "Windows System Tools"
3. Select "Control Panel"
4. Select "Recovery"
5. Select "Create a recovery drive"
6. Attach a blank USB to your computer
7. Uncheck "Back up system files to recovery drive"
8. Select "Next"
9. Uncheck unnecessary drives
10. Select "Next"
11. Select "Create"
12. When "Recovery drive is ready" is displayed, the process is complete.

startup repair

"Startup Repair" is a feature that comes into play when Windows fails to start twice in a row.

It will automatically try to repair minor problems caused by the software.

Additionally, in Windows 10, startup repair may not be possible without the recovery disc that came with the computer when purchased.

Startup Repair does not necessarily fix the problem. Also, if a serious problem is occurring, problems such as Startup Repair not finishing forever may occur.

Perform a system restore

If you have a restore point created on your computer, you can recover to a point before the problem occurred.

Restore points are often automatically created by default, but if they are not currently being created automatically, you should set them up just in case.

[How to set automatic creation of restore points]

1. Select "Start (Windows mark)"
2. Select "Settings (gear mark)"
3. Select "Version information"
4. Select “System Information” in “Related Settings”
5. Select "System protection"
6. Select the appropriate drive and select "Configure"
7. Check "Enable system protection"
8. Select "OK"

Repair MBR

MBR is an abbreviation for Master Boot Record, which is the sector used to boot a computer.

If this MBR is damaged, the computer will not be able to boot.

If you use this method to repair, please prepare a USB with at least 8GB of free space.

[How to repair MBR]

1. https://www.microsoft.com/en-gb/software-download/windows10Get more Windows 10 Media Creation tools
2. Start the tool
3. Select "Create installation media for another PC (USB flash drive, DVD, or ISO file)"
4. Connect the USB to your PC
5. Select "USB flash drive"
6. Once created, connect it to the computer where the error is occurring.
7. Start your computer and enter BIOS
8. Change the boot order so that USB comes first
9. Select "Repair your computer"
10. Select "Troubleshoot"
11. Select "Advanced options"
12. Select "Command Prompt"
13. Type "bootrec /fixmbr" in the command prompt and press Enter
14. Type "bootrec /fixboot" in the command prompt and press Enter
15. Type "bootrec /scanos" in the command prompt and press Enter
16. Type "bootrec /rebuildbcd" in the command prompt and press Enter
17. Once completed, restore the BIOS boot order
18. Restart and check if the problem is resolved

Back up and recover your data

If your computer remains stuck on a black screen or won't start, backing up your data and then performing recovery may solve the problem.

When you perform a recovery (initialization), your computer will be returned to its factory state, and all data will be lost. Therefore, don't forget to back up your data.

The following sections explain the specific steps.

• data backup
• Perform recovery
• restore data

data backup

First, back up your data.

Copy the data to another computer, other HDD, or SSD.
If you forget this step, important data will be lost, so please be careful.

perform recovery

Next, perform recovery (initialization).

First, Windows fails to start continuously, or "Choose an option" appears when you restart while holding down the Shift key.

Then select "Troubleshoot".
Select "Reset this PC" in Troubleshoot and select "Remove everything." Then, select "Fully clean the drive" and select "Reset to factory settings" to begin initialization.

Be sure to connect the power cord to the computer during initialization so that the initialization does not stop.

restore data

Transfer the data you backed up earlier to your original computer and you're done.

Also, make sure that your computer is working properly.

Summary of errors that cause a black screen on your computer

This time, we will explain how to deal with the error that causes a black screen to appear on your computer.

If your computer's screen remains black even when it's turned on, there may be various reasons.

First, check the status of your monitor and peripheral devices, and if the screen is still dark, check to see if there is anything wrong with your hard disk or SSD.

Also, when performing recovery as a last resort, be sure to back up your important data to avoid losing it.