Computer Screen Goes Black But Computer Still Running [Fixed]

I was working on my computer one day when suddenly, without warning, the screen went black.

I was in a panic like most people and had something gone wrong with the hardware.

Was I about to lose all my important data? 

But then I noticed that although the screen was dark and blank, the computer itself still seemed to be running normally.

That meant it wasn’t a major hardware malfunction, but I was forced to think about what could have caused this strange problem. 

After some investigation and research, I realized that there were several potential explanations for why this happened.

In this article, we’ll explore some of these causes and how you can go about fixing them if your own computer’s screen ever goes black unexpectedly.

Computer Screen Goes Black But Computer Still Running [Fixed]

Computer Screen Goes Black But Computer Still Running

The cause of your computer screen going black but the computer still running could be due to a variety of reasons such as faulty power cable, low screen brightness settings, defective graphics card, reset monitor settings, wrong BIOS setting, corrupt system files, and corrupted graphics drivers. Other potential causes include RAM issues or motherboard problems. To troubleshoot and diagnose the issue properly, try each in turn until you’re able to resolve it.

How to fix a computer screen that goes black but the computer is still running?

If your computer screen suddenly goes black but the computer is still running, there may be several potential causes.

You should begin by checking the power cable connection and making sure that it is securely connected to both the monitor and the wall socket.

You should also check the brightness settings on your monitor, as this can sometimes cause a blank screen.

If these simple solutions don’t solve your problem, then you could have a defective graphics card or corrupted system files.

To determine if either of these is causing your issue, you should try resetting the monitor settings and restoring BIOS settings.

If this does not work, then you should check for corrupt system files and corrupted graphics drivers.

Here is a step-by-step process to fix this issue:

  1. Check Power Cable
  2. Check Screen Brightness
  3. Defective Graphics Card
  4. Reset Monitor Settings
  5. Restore BIOS Setting
  6. Check for Corrupt System Files
  7. Corrupted Graphics Drivers
  8. Reinstall Your RAM
  9. Motherboard Issue
Computer Screen Goes Black But Computer Still Running [Fixed]

1- Check the Power Cable

If a computer screen goes black but the computer is still running, it is most likely caused by a broken or faulty power cable.

If the power cable has been damaged or disconnected in some way, it can cause the screen to go blank.

The solution to this problem is to replace the power cable with a new one that is properly connected to both the computer and monitor.

To check whether a faulty power cable is causing the issue, first, unplug any cables currently connected to the monitor.

Then plug them back in while making sure they are securely connected at both ends. 

You should also visually inspect all of the wires for wear and tear or other damage.

If any of them appear bent, frayed, cracked, or otherwise damaged, you will need to replace them with new ones before connecting them again.

2- Check Screen Brightness

Checking the screen brightness of a computer is an important step to take when troubleshooting a black screen issue.

When the computer screen goes black, but the computer is still running, it could be a sign that the display brightness has been dimmed too low for the user to see.

To check the screen brightness, first, make sure that the power settings are correct.

If you had recently changed the power settings or had been set to “sleep” mode, this could explain why the monitor went black.

If this isn’t the case, check your monitor’s brightness setting and make sure it is turned up all of the way.

 Some monitors may have an auto-brightness feature that can cause them to adjust their luminosity based on the ambient lighting in your environment.

3- Defective Graphics Card

A defective graphics card can also be the cause of a computer screen suddenly going black while the rest of the computer is still running.

This issue is particularly common with monitors, which contain integrated graphics cards that cannot be easily replaced like those in a desktop PC.

A defective graphics card can occur due to several different causes such as an older card becoming faulty over time, being damaged due to physical shock or movement, or having failed components due to a manufacturing defect.

Symptoms of a defective graphics card may include poor video quality, flickering images on the screen, distorted colors, lines across the display, or simply no video output at all. 

If these symptoms occur, a new graphics card should be considered for replacement.

4- Reset Monitor Settings

Resetting monitor settings is often a necessary step in troubleshooting computer screen issues.

The process involves resetting the display settings to the factory defaults, which will restore resolution, color depth, and other settings to their original values.

Monitor resetting can also help to fix issues with brightness or contrast, allowing users to view the display properly.

To perform a monitor reset, 

  1. Start by turning off your computer
  2. Unplugging the power cord from the back of your monitor
  3. Press and hold both the “Menu” and “+” buttons
  4. Press for about 10 seconds until you get the message “Factory Reset” on your display
  5. After that, release both buttons and wait for the monitor to finish its reset process.
  6. When it’s done, your display should revert to its original settings and resolution.

5- Restore BIOS Setting

Restoring your BIOS settings is an important step to take if your computer’s screen has gone completely black and the computer is still running.

BIOS, or Basic Input/Output System, is a firmware program stored on a chip inside your computer’s motherboard.

When you restore BIOS settings, you are essentially resetting your computer’s BIOS back to its default state.

This can be done in several different ways – depending on your particular device.

For most PCs, however, you will need to open up the case and locate the motherboard’s “BIOS jumper” – a small plastic plug that covers two pins on the board.

Once located, move this jumper from its current position over to the “reset” position for a few seconds before returning it to its original spot. 

6- Check for Corrupt System Files

One of the primary causes is corrupt system files. 

Corrupt system files occur when something has gone wrong with the operating system or program files on the computer.

Corrupt system files can cause a computer to become unresponsive, freeze up, or display an error message upon startup.

To check for corrupt system files, users should first restart their computer and then attempt to run a System File Checker (SFC) scan in administrator mode.

SFC scans are designed to detect any missing or corrupted system files and repair them automatically. 

If the scan does not fix the problem, users can also manually repair their Windows installation using a Windows Repair tool.

This tool will allow users to replace any damaged or missing programs and restore their PC’s functionality without operating the system from scratch.

7- Corrupted Graphics Drivers

Corrupted graphics drivers are a common issue that can occur when a computer’s graphics drivers become outdated or damaged.

Corrupted graphics drivers can cause a variety of issues, such as an inability to display images or animations normally on the monitor.

This can range from visual artifacts (strange lines and shapes) appearing on the screen to the entire display going black.

The computer may still be running in this case, but the user will not be able to interact with it properly due to the inability to see what is happening.

In some cases, corrupted graphics drivers can also lead to strange behavior within Windows itself, such as blue screens of death, freezing, or crashing.

Most of these issues are related to the operating system’s inability to properly access the hardware responsible for displaying visuals on the screen.

8- Reinstall Your RAM

If your computer screen suddenly goes black but the computer is still running, reinstalling RAM can be an efficient way to fix this problem.

Reinstalling RAM (Random Access Memory) is a process of replacing or upgrading the existing memory with one that is more suitable to the needs of your computer.

This can be done either by completely removing and replacing the existing RAM modules or by adding additional RAM modules to increase the available capacity.

When reinstalling RAM, it’s important to make sure you’re using memory compatible with your system.

Once you’ve selected a compatible memory module, you’ll need to remove the old module from its socket and install the new one.

The process of reinstalling RAM is generally very straightforward but can require some technical expertise.

9- Motherboard Issue

Motherboard issues are one of the most common problems that can cause a computer screen to go black, but with the computer still running.

A motherboard issue could be something as simple as a loose connection between the motherboard and the video card.

To confirm if it is indeed a motherboard issue, users should first check all cables and connections that go into the motherboard.

If any are loose or appear damaged, they should be replaced. If that doesn’t solve the problem, then further diagnostics may be needed.


In conclusion, if your computer screen goes black but your computer still running, you can troubleshoot by following these steps:

  1. Check Power Cable
  2. Check Screen Brightness
  3. Defective Graphics Card
  4. Reset Monitor Settings
  5. Restore BIOS Setting
  6. Check for Corrupt System Files
  7. Corrupted Graphics Drivers
  8. Reinstall Your RAM
  9. Motherboard Issue

If the monitor still goes black after trying all these steps, the problem is likely with the monitor itself and should be sent in for repair or replacement if it is still under warranty.


Why is my computer monitor turning on but the screen is black?

Your computer monitor turning on but the screen is black may be due to corrupt system files in your computer.

Corrupt system files can result from various causes like shutdowns without proper command execution, viruses and malware, corrupted software installations, and improper maintenance.

If this is the case, you should try restoring or reinstalling your operating system.

You should also make sure your antivirus program is up-to-date so it can detect any potential threats that may have caused the issue.

Additionally, you may need to check if all of your cables are properly connected before taking further steps.

How do you fix a black screen on a computer monitor?

A black screen on a computer monitor may be caused by several different issues, such as a driver issue, a video card problem, loose cables, or hardware malfunction.

If the black screen appears when you first turn your computer on, it could be due to a software or driver issue. 

The first step to try to resolve this issue would be to update your driver. Updates can help fix issues and prevent them from occurring in the future.

It is important to keep your drivers up-to-date as they often contain security patches and bug fixes that are essential for a secure, stable system. 

Why is my HDMI detected but a black screen?

There could be several reasons why your HDMI port is detected but you are presented with a black screen.

First, make sure that the HDMI cable fits firmly into the TV’s HDMI port. 

If it has been inserted correctly and is still displaying a black screen, it could be that the signal isn’t being sent from the other end of the cable.

Try using a different HDMI port on the TV, or switch to another HDMI cable to see if that resolves the issue.

Another option is that the resolution may be set too high for your device.

Why won’t my monitor turn on but has power?

It is possible that your monitor is not turning on because it has lost power.

To confirm, check the power light of your monitor to verify that it’s turned on.

If the power light is off, try plugging the monitor into a different outlet or using a different cord and see if this helps resolve the issue. 

If you are still unable to get your monitor to turn on, it may need to be serviced or replaced.

Why is my computer not displaying through HDMI?

It is possible that your computer is not displaying through HDMI because of a faulty HDMI connection.

This could be due to poor contact between the cable and the port, damaged cables, or an outdated driver.

To resolve this issue, try unplugging and replugging the cable into your computer’s HDMI port, replacing any damaged cables, or updating your graphics drivers.

If the problem persists after attempting these steps, you should take your device to a technician for further assistance.

Can a bad HDMI cable cause no picture?

Yes, a bad HDMI cable can cause no picture.

Because HDMI cables are responsible for transferring data from the source device (such as your TV) to the display device.

When the HDMI cable is not connected correctly or is of poor quality, it may result in no image or a fuzzy, low-quality image.

In some cases, you may also see a distorted or spotted picture. 

If you are experiencing any of these issues with your HDMI connection the cable is likely to blame.

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