How to Change Screen Resolution — Windows 11, 10, macOS & Chromebook

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Jump to: Windows 11 Windows 10 macOS Chromebook External Monitor Resolution Greyed Out Fix

What resolution should I use?

Set your monitor to its native resolution — the one marked Recommended. Running below native blurs everything because the monitor must stretch pixels to fill the panel.

If you want to verify what resolution your monitor is currently outputting, use the resolution checker on the homepage.

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If text, images, or games look stretched or fuzzy, your operating system is likely outputting the wrong pixel count or scaling factor. For reference on what resolution to target, see most common screen resolutions in 2026. Running a monitor at a non-native sizing mode forces the monitor’s scaling engine to interpolate pixels, which leads to general softness. If you want to check your active screen output first, you can use our home page resolution checker or learn about pixel density in our native pixel density guide.

This guide walks you through changing the screen layout step-by-step on all major platforms, configuring external monitors, and troubleshooting locked or greyed-out settings.

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Change screen resolution in Windows 11

Windows 11 features a clean Settings interface, but the setting options are hidden under multiple layout submenus. Follow these steps to adjust your screen:

1. Right-click the desktop → Display settings
   Right-click any empty space on your desktop screen and select Display settings from the context menu. This action opens the System Display settings directly.
2. Scroll to Scale & layout → Display resolution
   In the right-hand panel, scroll down past the HDR options to locate the Scale & layout section. Click on the dropdown menu next to Display resolution.
3. Select your resolution from the dropdown
   Choose your desired resolution. It is highly recommended to select the option marked (Recommended) (e.g., 3840 x 2160 or 1920 x 1080), which matches your monitor’s native layout.
4. Click Keep changes
   Windows will temporarily apply the new screen size for a 15-second trial. If the screen looks correct, click Keep changes. If the screen turns black or becomes unreadable, do not press anything; the settings will automatically revert after 15 seconds.

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Change screen resolution in Windows 10

Windows 10 remains highly popular, and while its screen management mechanics are identical to Windows 11, the Settings panel layout is structured differently.

1. Access Settings Panel: Right-click an empty space on your desktop and select Display settings from the pop-up context menu.
2. Configure Sizing: Scroll down in the main window to find the Resolution dropdown menu under Scale and layout.
3. Select Native Option: Click the dropdown and select your monitor’s native pixel width and height (marked with the Recommended tag).
4. Confirm the Selection: Once selected, a confirmation dialog box will appear. Click Keep changes to save. If you do not click it within 15 seconds, Windows will revert the settings to prevent a persistent black screen.

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Change display resolution on Mac

macOS handles display scaling differently than Windows. By default, it presents user-friendly visual boxes rather than lists of raw dimensions. This allows users to choose text size preferences while macOS automatically optimizes Retina rendering.

1. Open Settings: Click the Apple Menu () in the top-left corner of the screen and choose System Settings (or System Preferences on older macOS versions).
2. Navigate to Displays: Click the Displays icon in the sidebar.
3. Configure Scaling: Select the monitor you want to configure at the top of the pane.
   • To change the apparent size of text and UI elements, select one of the scaled visual options (ranging from Larger Text to More Space).
   • To see a list of raw hardware options, right-click any of the scaling options or hold down the Option key while clicking the scaled boxes to show a dropdown list of exact options (e.g., 2560 x 1440).
4. Revert Settings: If you choose a mode that displays a blank screen, macOS will revert to the working settings if you don’t confirm the change within 15 seconds.

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Change screen resolution on Chromebook

ChromeOS handles display resolution through the system Quick Settings panel. Unlike Windows, Chromebook uses a combined resolution and display size slider.

1. Open Quick Settings: Click the clock in the bottom-right corner of the screen (the system tray area).
2. Open full Settings: Click the gear icon (Settings) in the Quick Settings panel.
3. Navigate to Displays: In the left sidebar, click Device, then select Displays.
4. Change Resolution: Under the Built-in display section, click the Resolution dropdown and select your target resolution. The highest available option is your panel’s native resolution — select it for the sharpest image.
5. Adjust Display size: The Display size slider below controls UI scaling independently of resolution. Move it left to fit more on screen, right to make everything larger.

For an external monitor connected to a Chromebook, click the monitor’s name at the top of the Displays page and adjust its resolution separately from the built-in screen.

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Change resolution for an external monitor

When you connect a secondary monitor, a projector, or a docking station to your computer, managing multiple screens becomes slightly more complex.

• Rearrange Virtual Screens: In both Windows Display Settings and macOS Displays, you will see a visual representation of your connected monitors. Click and drag the screen icons to match how they sit on your desk. This ensures your mouse cursor moves smoothly between screens.
• Select the Target Monitor First: Before changing screen sizing or scaling, click on the specific monitor icon at the top of the settings page. Any adjustments you make to scaling, pixel counts, or refresh rate will apply only to the selected screen.
• Mirror vs. Extend:
  • Extend these displays: Recommended for productivity. Each screen functions independently at its own native sizing.
  • Duplicate / Mirror displays: Forces both monitors to show the identical image. The OS will automatically drop both screens to match the lower-spec monitor, which often results in a blurry image on the higher-spec display.

If your secondary monitor looks blurry after extending, check if you need to adjust scaling on that specific monitor using our blurry screen guide.

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Why is my screen resolution greyed out?

If you cannot click the display sizing dropdown menu in Windows, or if the options are locked to low settings (like 800 x 600 or 1024 x 768), it indicates a communication issue between your GPU, operating system, and monitor.

Here are the step-by-step procedures to troubleshoot and fix a greyed-out settings option:

1. Update your graphics card drivers

When Windows lacks proper graphics drivers, it defaults to the Microsoft Basic Display Adapter. This basic driver doesn’t support high-density outputs or hardware acceleration.

• Press Windows Key + X and select Device Manager.
• Expand the Display adapters section.
• If you see “Microsoft Basic Display Adapter” or a warning yellow triangle, your drivers are missing.
• Go to the driver download page for your graphics processor manufacturer (NVIDIA, AMD, or Intel), download the latest driver package for your GPU model, and run the installation. Once finished, restart your PC to see the full layout options.

2. Check display cable bandwidth

If you connect a high-density screen (like a 4K monitor or an ultrawide monitor) using an older cable, the operating system may limit the dropdown selection to prevent signal crashes.

• HDMI vs. DisplayPort Bandwidth Limits:
  • HDMI 1.4: Limited to 4K at 30Hz or 1080p at 120Hz.
  • HDMI 2.0: Supports up to 4K at 60Hz.
  • HDMI 2.1: Supports 4K at 144Hz and 8K at 60Hz.
  • DisplayPort 1.4: Aligns with 4K at 144Hz with full color depth.
• If your sizing options are limited, swap your cable for a high-quality, VESA-certified DisplayPort 1.4 cable or an Ultra High Speed HDMI 2.1 cable.

3. Check for multi-monitor bandwidth caps

If your laptop is connected to a USB-C hub or docking station driving multiple monitors, the dock might run out of bandwidth, locking secondary screens to a lower pixel width. Try connecting the monitor directly to the laptop’s built-in HDMI or USB-C port to see if the settings dropdown unlocks.

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Cable bandwidth and resolution reference

Below is a reference of maximum output capabilities based on cable standard connections:

If you’re still experiencing scaling bugs or screen fuzzy text, refer to our specific Windows blurry screen guide for instructions on configuring ClearType tuning and per-app scaling overrides.