How to Fix Black Lines on Monitor

Seeing black lines on the monitor can be very annoying. It could be the reason for a hardware failure or a software issue. Black lines can interfere with your work and can also give you anxiety if the monitor is costly. In this detailed article, I will provide some checks and fixes to remove black lines from the monitor.

Horizontal lines are often caused by physical damage to the monitor, damaged cable, conflicts between display resolution and selected screen resolution from the OS, wrong refresh rate settings, or out of date drivers. We will try to find ways to fix the black lines issue in the monitor.

Step 1: Check the Cable Connections

First of all, make sure all the cables are plugged in properly.

1. Turn off your monitor and computer.
2. Unplug the cable that connects your monitor to your computer).
3. Check for damage on the cables. If you see any cuts or bends, you might need new cables.
4. Plug the cables back in securely.
5. Turn on your monitor and computer to see if the lines are gone.

Step 2: Update Your Graphics Driver

Sometimes, outdated drivers can cause display issues. So, make sure your system’s graphics drivers are updated.

1. Go to the website of your computer or graphics card manufacturer (like NVIDIA, AMD, or Intel).
2. Find the latest driver for your graphics card.
3. Download and install the driver.
4. Restart your computer and check if the problem is fixed.

Step 3: Adjust the Monitor Settings

Your monitor settings might be causing the problem. So, try changing monitor settings.

1. Press the menu button on your monitor (usually located on the side or bottom of the screen).
2. Navigate to the settings (look for options like “Display Settings” or “Screen Adjustment”).
3. Reset to factory settings. Reset monitor to factory settings. This will revert all settings back to default.
4. Check if the black lines are gone.

Step 4: Test with Another Monitor or Computer

Test the monitor with any other computer to figure out if the problem is with the monitor or the computer.

1. Connect your monitor to another computer (if you have one).
2. Connect another monitor to your computer.
3. Check for black lines on both setups.

If your monitor shows lines on another computer, the problem is with the monitor. If another monitor shows lines on your computer, the problem is with your computer.

Step 5: Check for Software Issues

Sometimes, software problems can cause display issues.

1. Restart your computer in safe mode.
2. Check if the black lines are still there. If they are gone, a software program might be causing the issue.
3. Uninstall any recent programs or updates that might be causing the problem.

Step 6: Calibrate your monitor

Calibrate the monitor to adjust monitor’s display settings to ensure it shows colors accurately. There are mainly two ways to calibrate a monitor. Either you can use computer’s built-in calibration tools or third-party software. There is also hardware calibration that provides accurate results.

Step 7: Look for Physical Damage

If none of the above steps work, there could be a physical damage.

1. Closely check the monitor and try to find if there are cracks or other damage in the monitor.
2. If you see any damage, you need to contact the brand’s service center to get it repaired.

At the end, you need to contact service center to get replacement if the monitor is in warranty. If motor is out of warranty, you can either go to official repair center or a third-party repair center to get it fixed.