Welcome to the ultimate guide on troubleshooting the left-side cutoff issue with projectors. Experiencing the sudden disappearance of the left side of your projected screen during a movie night can be pretty bothersome. But worry not, as many others have faced this issue too.

If your projector only shows half the image (right or left side), check your computer’s display settings. Disable dual display in the computer settings to resolve the issue and project the full image.

In this article, we dive deep into the causes, identification methods, and solutions, covering everything from cable connections to temperature troubles. Join the journey as we unravel the solutions and bid farewell to the elusive left-side cutoff. Your glitch-free projection experience starts here!

1. Projector Calibration Issue (Overscan)

Projector Calibration Issue

Improper calibration, known as overscan, can lead to the left side of the screen being cut off. This occurs when the projector extends the image beyond the visible boundaries of the screen.

Identifying the Cause

Navigate to your projector settings or remote control to check if overscan is the culprit. Look for calibration or overscan settings. If the image extends beyond the screen borders, overscan might be the issue.


  • Access your projector menu using either the on-device controls or the remote control.
  • Look for the “Calibration” or “Overscan” option within the menu. This setting is often found under the display or image settings.
  • Once located, select the “Calibration” or “Overscan” option to access the adjustment settings.
  • Make gradual adjustments to the calibration or overscan settings to ensure the entire image fits perfectly within the screen. Start by adjusting the parameters related to the left side of the display.
  • After each adjustment, check the projected image on the screen to see if the left-side cutoff issue has been resolved.

2. Incompatible Resolution or Aspect Ratio

Projector Incompatible Resolution

Using a resolution or aspect ratio incompatible with your projector can result in a misaligned display, cutting off the left side.

Identifying the Cause

Check the resolution and aspect ratio settings on your projector and video source. Look for any warning messages or indicators that suggest an incompatible setting.


  • Begin by accessing the settings on your projector or the video source device, such as a computer or DVD player.
  • Look for the “Resolution” and “Aspect Ratio” settings within the menu. These are often found under display or video settings.
  • Ensure that the selected resolution and aspect ratio match the recommended values for your projector. Refer to the projector’s user manual for the correct specifications.
  • Make necessary adjustments to the resolution and aspect ratio settings until the projected image is aligned correctly on the screen.
  • After making the adjustments, restart the projector to apply the changes. This step ensures that the new settings take effect.
  • If you are still determining your projector’s recommended resolution and aspect ratio, consult the user manual or check the manufacturer’s official website for detailed specifications.

3. Low-Quality VGA/HDMI Splitter

Using a subpar VGA/HDMI splitter may lead to signal degradation, resulting in the left side of the screen being cut off.

Identifying the Cause

Inspect the quality of your VGA/HDMI splitter. Look for any visible damage or signs of wear. Check for signal loss indicators, such as flickering or inconsistent display.


  • Invest in a high-quality VGA/HDMI splitter from a reputable brand.
  • Replace the existing splitter with the new one.
  • Ensure secure connections between all devices.
  • Test the projector to verify that the left-side cutoff issue is resolved.

4. Auto-Image or Auto-Position Is Enabled

Automatic image adjustment features, like Auto-Image or Auto-Position, may misinterpret the screen size, leading to a misaligned display.

Identifying the Cause

Check your projector settings for any auto-adjustment features. Look for signs of automatic repositioning during projector startup.


  • Disable Auto-Image or Auto-Position features in the projector menu.
  • Manually adjust the image position and size to ensure it fits the screen.
  • Save the settings and restart the projector to apply the changes.

5. Obstruction in the Projection Path

Obstruction in the Projection Path

Physical objects obstructing the projection path can result in the left side of the screen being cut off.

Identifying the Cause

Inspect the area between the projector and the screen for any obstacles. Check for shadows or blockages that might interfere with the projection.


  • Clear the projection path of any obstacles.
  • Ensure a clear line of sight between the projector and the screen.
  • Adjust the projector position if necessary.
  • Test the display to confirm the issue is resolved.

6. The Source Video Being Cut Off

The source video may have the left side cut off, significantly if it was edited or formatted incorrectly.

Identifying the Cause

Play a different video to determine if the issue persists. Check the source video for any signs of cropping or misalignment.


  • Use a different video source to ensure the problem is not inherent to the projector.
  • Review and reformat the source video to correct any cropping or alignment issues.
  • Test with the corrected video to confirm the left side cutoff is resolved.

7. Cable Connection Gremlins

Loose or faulty cable connections can contribute to the left side of the screen being cut off.

Identifying the Cause

Gently wiggle and inspect the cable connections at the projector and the video source. Look for any visual cues like flickering or intermittent display issues.


  • Tighten or replace any loose or damaged cables.
  • Securely connect the cables to both the projector and the video source.
  • Power cycle the projector and check for improvements.

8. Outdated Firmware/Software

Running on outdated firmware or software might be a silent contributor to the left-side cutoff dilemma.

Identifying the Cause

Navigate to the projector settings and look for firmware or software version information. Check for any notifications or warnings indicating outdated software.


  • Visit the official website of the projector manufacturer.
  • Navigate to the “Support” or “Downloads” section.
  • Locate your projector model and check for the latest firmware or software update.
  • Download the update file to your computer.
  • Follow the step-by-step installation instructions provided by the manufacturer to update your projector’s firmware or software.
  • After installation, restart the projector to apply the updates and resolve any compatibility issues.

9. Temperature Troubles

Temperature Troubles

Extreme temperatures can affect the projector’s internal components, leading to display issues.

Identifying the Cause

Monitor the operating temperature of the projector. Check for warnings or shutdowns due to overheating.


  • Ensure proper ventilation around the projector to maintain a stable temperature.
  • Clean any dust or debris obstructing the projector’s cooling system.
  • If applicable, check for and clean or replace the projector’s air filter.
  • Narrate your encounter with temperature-related issues and how you resolved them.

10. Aging Projector Lamp

The projector lamp might be reaching the end of its lifespan, affecting the quality and alignment of the projection.

Identifying the Cause

Check the projector settings for lamp hours or lifespan information. Look for any warning indicators regarding the lamp.


  • Replace the projector lamp with a new, compatible one.
  • Power off the projector and let it cool down completely.
  • Locate the lamp compartment, usually accessible from the projector’s underside or rear.
  • Carefully remove the old lamp according to the manufacturer’s guidelines.
  • Insert the new, compatible lamp securely, ensuring proper alignment.
  • Close the lamp compartment, restart the projector, and follow any on-screen prompts for lamp reset if necessary.


Why is the left side of my projector screen being cut off?

The most common reason for this issue is misalignment or incorrect positioning of the projector. Ensure that the projector is centered and directly facing the screen. Adjust the projector’s keystone settings to correct any distortion and ensure it is at the proper distance from the screen.

How do I fix the horizontal alignment on my projector to stop the left-side cutoff?

Check the projector’s menu settings for horizontal or keystone adjustments. Use these settings to fine-tune the alignment until the entire image fits perfectly on the screen. Additionally, ensure that the input signal resolution matches the projector’s native resolution to avoid cropping.

What can cause a projector to crop the left side of the image intermittently?

Intermittent cropping may result from loose or damaged cables. Check the connections between the projector and the video source. Replace any faulty wires and ensure they are securely plugged in. Also, inspect the projector’s input settings to match the signal source.

Is there a software solution for the left-side cutoff on my projector?

In some cases, a firmware update for the projector may address issues related to screen cutoff. Visit the manufacturer’s website and check for the latest firmware updates for your projector model. Follow the instructions to update the firmware and see if it resolves the problem.

What should I do if adjusting the projector settings doesn’t resolve the left-side cutoff issue?

If manual adjustments and firmware updates don’t solve the problem, it’s advisable to contact the manufacturer’s customer support. Please provide them with details about your projector model, the issue you’re experiencing, and the steps you’ve taken to troubleshoot.


If your projector cuts off one side, ensure your computer’s display settings are not configured for dual display, which may show only half the image. Access the display settings, commonly found alongside other display properties adjustments, and turn off the dual display to project the entire image accurately. This straightforward solution ensures a seamless and complete projection experience.


Fernando Shrader

Hey, It’s me, Fernando Shrader. I’m the creator of this website. You might wonder why I’ve created this blog and what’s the difference between Visual Finds and other online blogs. As a professional technician working for the last 8 years with projectors, I though this is the right time to share what I’ve learned in this journey with an online audience so they can see what I’m doing and how they can solve their problems! Happy Learning!