How to Use an Extra Laptop as a Dual Monitor: Setup Guide

How to Use an Extra Laptop as a Dual Monitor: Setup Guide


Are you looking for a more convenient way for your laptop to interact with an extra display? You may have heard of using an extra laptop as a monitor, but aren’t sure where to start. Setting up an extra laptop as a dual monitor is an efficient way to increase productivity at home or the office. In this guide, we will explain how to use an extra laptop as a dual monitor in a few straightforward steps.

Before getting started on setting up an extra laptop as a dual monitor, you’ll need to make sure your computers are compatible. Make sure both devices are running the same version of Windows, such as 10 or 8.1. If they aren’t, you won’t be able to use the laptop as an additional monitor. You’ll also need to make sure you have a network cable, Video Graphics Array (VGA) cable, or High-Definition Multimedia Interface (HDMI) cable.

Step-by-Step Guide

Step-by-Step Guide

Having an extra laptop handy is great for daily use. But did you know you can use it as a dual monitor for your existing laptop? With the right setup, you can double your laptop’s display area and work more efficiently. Here’s a step-by-step guide on how to make it happen.

Step 1: Connect Your Laptops

You can use a VGA or HDMI cable to connect your laptop to the extra laptop. The main laptop will be connected to the extra laptop as an “output”. This means that the extra laptop will be the one with the display.

Step 2: Set Up the Extra Laptop as Extended Display

Once the cable is plugged in, you need to go to your laptop’s Display Settings and modify it to make the extra laptop an extended display. You can usually find the Display Settings in the Control Panel. Just look for something that says “Advanced Settings” or “Second Screen Options”.

Step 3: Tweak the Settings

Once the extra laptop is set up as the extended display, there are still a few settings that need to be changed. Find the option to duplicate the display and change the resolution to the desired display size. You may also need to adjust the brightness and contrast levels to make sure the display is readable.

Step 4: Enjoy

With the setup complete, you can now use your extra laptop as a dual monitor. This is a great way to improve productivity and efficiency. Have fun and enjoy your newfound display area!

Advantages and Disadvantages

Using an extra laptop as a dual monitor has become increasingly popular, especially for people who work from home. There are many advantages to using an extra laptop as a dual monitor, but it also has some disadvantages. This guide will explain the setup process and list the pros and cons to help you decide if it’s the right option for you.


  • Setting up a dual monitor with an extra laptop is fairly simple and doesn’t require any extra hardware.
  • Using two laptops allows you to easily switch between your work and personal device without having to constantly switch cables in and out of a main desktop monitor.
  • You can easily extend your laptop’s ability for multitasking, making it easier to focus on a certain task.
  • You can access all your data from both monitors without having to move it back and forth between various connected devices, making it more efficient.


  • Using a second laptop may cause compatibility issues if your computers do not have the same operating system or graphics card.
  • The picture quality of your dual monitor might be lower than if you were to buy an additional dedicated monitor.
  • The lifespan of your extra laptop may be reduced since having two laptops running at the same time will require more power and heat.

If you opt to use an extra laptop as a dual monitor, make sure you follow the setup instructions carefully and account for any potential compatibility issues. By weighing the advantages and disadvantages of using a laptop as a secondary monitor, you can decide if it’s the best way for you to get the most out of your two devices.

Troubleshooting Tips

Troubleshooting Tips

Encountering problems while setting up a Dual Monitor using an extra laptop? Here are some troubleshooting tips that can help:

  • First and foremost, make sure that both of your monitors are connected to the same computer. Even if it is a laptop, connecting it with a monitor might require some wiring from your local computer store.
  • Ensure that the laptop’s display settings are set to “Duplicate” and not “Extend”. This will mirror the same content on both monitors, like two TVs in one room.
  • If you are using a Windows laptop, uninstalling the “Generic PnP Monitor” driver might help as this could be causing some display issues. To do that, go to Device Manager > Uninstall all the display drivers by right-clicking > Restart computer.
  • If possible, try a different cable connection (e.g. VGA,HDMI,DVI,DisplayPort), as some ports might be outdated. Make sure that the monitor and laptop have compatible ports.
  • If your laptop has an external g raphics card , make sure to update the drivers for that card and for the laptop as well. This should hopefully solve most problems.
  • Sometimes there can be compatibility issues between your laptop and second monitor’s graphics adapter. Try to troubleshoot the issue in safe mode or replace the adapter with a newer model.

These steps should help you troubleshoot most of the issues while using your laptop as a dual monitor. If you still face any issue, contact your laptop’s technical support.

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