How to Change Display Numbers in Windows 10 (What Actually Works)

With two or more monitors, Windows 10 labels them 1, 2, 3, and so on. Often the numbers don’t match where the screens sit on your desk, and “1” isn’t even the monitor you use most. The catch: Windows has no setting to renumber displays. The numbers come from how your graphics card detects each port. But you can fix everything that the numbers actually affect: which screen is the main one, how the mouse moves between them, and, if you really want different numbers, the cable order. Here’s how.

Quick Answer

You can’t rename display numbers in Settings. Instead, go to Settings > System > Display, drag the monitor boxes to match your desk layout, select the monitor you want as primary, and check Make this my main display. To actually change which monitor is “1,” swap the cables between the ports on your graphics card.

Why Display Numbers Can’t Be Changed

Windows assigns numbers based on the order your graphics card reports its outputs (for example, DisplayPort 1 before HDMI). The number is just a label. It doesn’t control which screen shows the taskbar, the Start menu, or new windows. That’s all controlled by the main display setting and the arrangement, which you can change freely.

Step 1: Identify Which Monitor Is Which

1. Right-click the desktop and choose Display settings (or go to Settings > System > Display).
2. Click Identify. A large number appears on each screen for a few seconds.
3. If a monitor is missing, click Detect, and make sure Multiple displays is set to Extend these displays.

Step 2: Rearrange the Displays to Match Your Desk

1. In Display settings, drag each numbered box so the layout matches the physical positions of your monitors. For example, if monitor 2 is on your left, drag box 2 to the left of box 1.
2. Line up the top or bottom edges if your monitors are at different heights. This controls where the mouse crosses between screens.
3. Click Apply.

Now your mouse moves naturally from one screen to the next, whatever the numbers are.

Step 3: Choose Your Main Display

1. Click the box for the monitor you want as your primary screen.
2. Scroll to Multiple displays and check Make this my main display.

The main display gets the Start menu, the system tray, and the clock (unless you show the taskbar on all displays), and most apps open there first. The number stays the same, but this is usually what people actually want when they ask to make a screen “number 1.”

Step 4 (Optional): Swap Cables to Change the Numbers

If you want the numbers themselves to change, for example so games or a streaming app that asks for “Display 1” pick the right screen:

1. Shut down the PC.
2. Swap the monitor cables between the ports on your graphics card (or use a different port type, like DisplayPort instead of HDMI).
3. Turn the PC on and click Identify to check the new numbers.

Plug monitors into the graphics card, not the motherboard, on desktops with a separate GPU. The order ports are numbered in varies by card, so it can take a try or two.

Advanced: reset saved display configurations

Windows stores monitor setups in the registry under HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\GraphicsDrivers\Configuration and \Connectivity. Some users delete those subkeys (after backing up the registry) and restart to force Windows to redetect monitors, which can change numbering after a cable swap. Only try this if you’re comfortable with the Registry Editor, since mistakes there can cause display problems. Uninstalling the monitors under Device Manager > Monitors and restarting is a safer first attempt.

Graphics Card Control Panels

NVIDIA Control Panel, AMD Software, and Intel Graphics Command Center use their own numbering, which may not match Windows. They can set up and rearrange displays but generally don’t renumber Windows’ labels either.

Show the Taskbar on Every Screen

Go to Settings > Personalization > Taskbar and turn on Show taskbar on all displays. Under Show taskbar buttons on, choose whether each screen shows only its own windows.

For Windows 11 steps, see extending your display on Windows 11.

Troubleshooting

• Numbers change after sleep or a restart: Update your graphics driver from the GPU maker’s site and use the same ports every time. Some docking stations reorder monitors when they wake.
• Make this my main display is grayed out: That monitor is already the main display, or displays are set to Duplicate instead of Extend.
• Game opens on the wrong monitor: Set your preferred monitor as main before launching, or look for a monitor/display option in the game’s video settings.

Frequently Asked Questions

Does the display number affect performance?

No. It’s only a label. Refresh rate and resolution are set per monitor under Advanced display settings.

Is it different in Windows 11?

The steps are almost the same. In Windows 11, the main display checkbox is under the Multiple displays section after you select a monitor.

Summary

1. Windows can’t rename display numbers directly.
2. Use Identify, then drag the displays to match your desk.
3. Check Make this my main display on your primary monitor.
4. Swap cables between GPU ports if you need different numbers.