1. Why isn't my second monitor displaying anything?

  • Check the connections:
    • Ensure both monitors are properly plugged into the computer.
    • Check the cables (HDMI, DisplayPort, etc.) to make sure they are securely connected to both the monitor and the computer.
    • If possible, try using a different cable or port.
  • Check power:
    • Make sure the second monitor is turned on.
    • Check if the power cable is plugged in correctly and the monitor is receiving power.

2. How do I set up my dual monitors correctly?

  • On Windows:
    1. Right-click on the desktop and select Display settings.
    2. Under the “Multiple displays” section, click Detect if your second monitor isn’t showing up.
    3. Select Extend these displays to use the monitors as separate screens.
  • On Mac:
    1. Go to Apple Menu > System Preferences > Displays.
    2. Click the Arrangement tab and make sure Mirror Displays is unchecked if you want to extend your desktop.

3. Why is my second monitor mirrored, and how do I extend the display?

  • On Windows:
    1. Right-click the desktop and go to Display settings.
    2. In the “Multiple displays” dropdown, choose Extend these displays to use the monitors separately.
  • On Mac:
    1. Open System Preferences > Displays.
    2. In the Arrangement tab, uncheck Mirror Displays to extend your display.

4. Why is the resolution different on each monitor?

  • On Windows:
    1. Right-click on the desktop and select Display settings.
    2. Scroll down to Display resolution for each monitor and adjust them to the same or appropriate resolution.
  • On Mac:
    1. Go to Apple Menu > System Preferences > Displays.
    2. Click on each monitor in the Displays panel to adjust the resolution.

5. Why are my monitors reversed (the cursor moves in the opposite direction)?

  • On Windows:
    1. Right-click the desktop and choose Display settings.
    2. Under the “Rearrange your displays” section, click and drag the monitor icons to match the physical setup of your monitors (drag one to the left or right as needed).
  • On Mac:
    1. Go to System Preferences > Displays.
    2. Click the Arrangement tab and drag the displays to match your physical monitor setup.

6. Why does my second monitor keep going black or flickering?

  • Check cables: Ensure the video cable (HDMI, DisplayPort, etc.) is securely connected. Try using a different cable if you have one available.
  • Check power: Make sure the monitor is powered properly, and the power cable is securely plugged in.
  • Try a different port: If you have multiple ports on your computer, try connecting the monitor to a different port.
  • Check for driver updates:
    • On Windows: Go to Start > Device Manager > Display adapters, right-click the adapter, and select Update driver.
    • On Mac: Ensure your macOS is up to date by going to System Preferences > Software Update.

7. How do I use my second monitor as the primary display?

  • On Windows:
    1. Right-click on the desktop and choose Display settings.
    2. Select the monitor you want to use as the primary display and check the box for Make this my main display.
  • On Mac:
    1. Go to System Preferences > Displays.
    2. Click the Arrangement tab, then drag the white menu bar to the monitor you want to use as your main display.

8. If nothing works, what should I do next?

If none of the steps above resolve your issue, log a ticket for IT support. Here’s how:

Please include:

  • Details about the problem.
  • The steps you've already tried

Guillaume Manouan 

Head of IT