Adjust brightness through Windows settings

The fastest way to brighten your screen is through the Windows brightness control. On most laptops and some desktop monitors, you can use the keyboard shortcut: hold the Fn key and press the brightness-up arrow (usually marked with a sun icon). Each press increases brightness by a small increment. On some Dell, HP, and Lenovo models, the brightness keys work without holding Fn.

If keyboard shortcuts do not work, open the Windows Settings menu. Press Windows key + I, then select System from the left menu. Click Display, and you will see a brightness slider near the top. Drag it to the right to increase brightness. This method works on all Windows 10 and Windows 11 machines, regardless of monitor type.

Some older laptops have a separate brightness control in the system tray (the icons in the bottom-right corner of your taskbar). Click the battery or power icon and look for a brightness slider. If you see one, drag it right to brighten the screen.

Key Takeaways

  • Keyboard shortcuts using Fn plus the brightness-up arrow are the quickest method on most laptops, though the specific keys vary by manufacturer.
  • Windows Settings provides a brightness slider that works on every Windows machine through System > Display.
  • Monitor-specific controls on the physical device itself override Windows settings and may be necessary if your screen has a very low maximum brightness.
  • Graphics driver updates can restore brightness controls if they stop working after a Windows update.
  • Disabling adaptive brightness (which dims the screen automatically) prevents Windows from overriding your manual brightness choice.

Use your monitor's physical brightness controls

If Windows settings do not make your screen bright enough, the problem may be that your monitor itself is set to a low brightness level. Desktop monitors and some laptop displays have physical buttons or dials on the front or back. Look for buttons labeled with a sun icon or the words "brightness" or "menu." Press the brightness-up button repeatedly until the screen reaches your preferred level.

On monitors with an on-screen menu, press the menu button (often in the center of the bottom bezel), then navigate to brightness or contrast settings using the arrow buttons. Increase the brightness value and press enter or the confirm button. The exact menu layout varies by brand—Dell, LG, ASUS, and BenQ all arrange their menus differently, but brightness is always one of the first options.

Monitor brightness controls override Windows settings, so if your screen is dim even after raising the Windows slider, check the physical monitor first. Many people forget that monitors ship with brightness set to 50 percent or lower to reduce power consumption.

Turn off adaptive brightness

Windows has a feature called adaptive brightness that automatically dims your screen in low light and brightens it in bright light. This can interfere with your manual brightness adjustments—you raise the brightness, but Windows lowers it back down based on ambient light sensors. To stop this, open Windows Settings with Windows key + I, go to System > Display, and scroll down to find Brightness.

Look for a toggle labeled Change brightness automatically or Adaptive brightness. Turn it off by clicking the toggle so it shows "Off." After you disable it, Windows will respect your manual brightness setting and not change it automatically. This is especially useful if you work in an office with fluorescent lights or if you move between bright and dim rooms frequently.

On some laptops, adaptive brightness is controlled through the battery settings instead. If you do not see the toggle in Display settings, press Windows key + I, go to System > Battery, and look for brightness options there.

Update your graphics driver

If brightness controls suddenly stop working after a Windows update, the problem is often an outdated or corrupted graphics driver. Your graphics driver is the software that tells Windows how to communicate with your monitor. When it is out of date, brightness controls may disappear or become unresponsive.

To update your driver, right-click the Windows Start button and select Device Manager. Expand the Display adapters section by clicking the arrow next to it. Right-click your graphics card (usually labeled Intel, NVIDIA, or AMD) and select Update driver. Choose Search automatically for updated driver software and let Windows search for the latest version. Restart your computer when the update finishes.

If automatic updates do not find a driver, visit the manufacturer's website directly. Go to Intel.com, NVIDIA.com, or AMD.com, find your graphics card model, and read the driver manually. This method is more reliable for older graphics cards or specialized hardware.

Adjust color and contrast settings

Sometimes a screen looks dim because the contrast is too low, not because the brightness is actually low. Contrast controls how much difference there is between light and dark areas on your screen. Increasing contrast can make the display appear brighter and sharper without changing the actual brightness level.

In Windows Settings, go to System > Display and scroll down to Brightness and contrast. Drag the contrast slider to the right to increase it. You can also adjust color temperature here—moving the slider toward "Warmer" adds yellow tones, which can make the screen feel less harsh in dim lighting, while "Cooler" adds blue tones and can make the screen appear brighter.

On your monitor's physical menu, contrast is usually located right next to brightness. Increase it in small steps—too much contrast can make text look jagged and colors look unnatural. A good starting point is 50 to 60 percent contrast with brightness at 75 to 85 percent.

Check for display scaling and resolution issues

If your screen looks dim or washed out, the problem might be display scaling or an incorrect resolution setting. Display scaling happens when Windows stretches an image to fit your screen, which can reduce sharpness and make colors appear faded. To check your resolution, right-click on your desktop and select Display settings. Under Scale and layout, look at the resolution setting.

The resolution listed should match your monitor's native resolution—for example, 1920 x 1080 for a standard 24-inch monitor or 2560 x 1440 for a larger display. If the resolution is lower than native, Windows is scaling the image, which can make it look dim. Change it to the highest resolution available (usually marked "Recommended") and click explore. Your screen may flicker for a moment, then stabilize at the correct resolution.

If you see a message asking whether to keep the new resolution, click Keep changes within 15 seconds or Windows will revert to the previous setting. If the new resolution makes text too small to read, go back to Display settings and increase the text scaling percentage under Scale and layout.

Troubleshoot when brightness controls do not respond

If none of the above steps work, start by restarting your computer. Many brightness control failures are temporary and resolve after a restart. Shut down completely (not sleep mode), wait 10 seconds, and turn the computer back on.

If brightness controls still do not work after restart, check whether your monitor is connected properly. For desktop monitors, make sure the cable is fully inserted into both the monitor and the computer. For laptops, the brightness controls may be disabled in BIOS (the computer's firmware). Restart your computer and press the BIOS key during startup—this is usually F2, F10, or Delete, depending on your manufacturer. Look for a setting called "Integrated Graphics" or "Display" and make sure it is enabled. If you are not comfortable in BIOS, skip this step and contact your computer manufacturer's support.

As a last resort, uninstall and reinstall your graphics driver. Open Device Manager, right-click your graphics card, and select Uninstall device. Restart your computer—Windows will automatically reinstall a basic driver. Then follow the driver update steps above to install the latest version from the manufacturer.

Frequently Asked Questions

Why does my screen get dimmer when I unplug my laptop?

Windows automatically reduces brightness when running on battery to save power. This is called battery saver mode. To stop this, open Settings, go to System > Battery, and turn off Battery saver. You can also adjust the brightness threshold—Windows will not dim the screen until battery drops below the percentage you set.

Can I make my screen brighter than the maximum Windows setting?

No, but you can increase perceived brightness by raising contrast and adjusting color temperature. If your monitor has a physical brightness control, make sure it is set to 100 percent—this is separate from Windows brightness and often overlooked. Some gaming monitors also have an "overdrive" or "response time" setting that can make the display appear brighter.

My brightness controls work but the screen is still too dim for my eyes. What else can I do?

Try increasing contrast and reducing blue light by shifting color temperature toward warmer tones. You can also enable high contrast mode in Windows: go to Settings > Accessibility > Display and turn on High contrast. This mode increases the difference between text and background, making the screen easier to read. If eye strain is the issue, take 20-second breaks every 20 minutes and look at something 20 feet away.

Do I need to update my graphics driver if brightness controls stop working?

Usually yes, especially if brightness controls worked before and suddenly stopped. Graphics driver updates often fix brightness control bugs. However, if your monitor is very old or uses an unusual connection type, the driver may not be available. In that case, use your monitor's physical brightness buttons instead.

Is it bad to keep my screen at maximum brightness all the time?

Maximum brightness uses more power and can reduce monitor lifespan slightly, but modern monitors are designed to handle it. The bigger concern is eye strain—very bright screens can cause discomfort during long work sessions. A brightness level of 75 to 85 percent is usually comfortable for most people in normal indoor lighting.