The quickest way to brighten your screen

The fastest method depends on your device. On Windows, use the keyboard shortcut Windows key + A to open the Quick Settings panel, then drag the brightness slider to the right. On Mac, press F1 (or Fn + F1 on newer models) to increase brightness, or click the Control Center icon in the top-right corner and adjust the brightness slider. On Chromebooks, press the brightness-up key (usually marked with a sun icon) on the keyboard.

If your keyboard shortcut does not work, your computer may have brightness controls in the system settings instead. This is common on older laptops or desktop monitors with physical buttons.

Key Takeaways

  • Windows computers use Windows key + A to open Quick Settings, where you can drag the brightness slider right.
  • Mac computers use the F1 key or Control Center to adjust brightness without opening settings.
  • Desktop monitors have physical buttons on the front or side that control brightness separately from your computer's software.
  • If keyboard shortcuts do not work, check your system settings under Display or Screen to find brightness controls.
  • Some laptops have brightness keys on the keyboard marked with sun symbols that work without opening any menus.

Using Windows brightness controls

On Windows 10 and Windows 11, the Quick Settings panel is the easiest route. Press Windows key + A together. A panel will slide in from the right side of your screen. Look for the brightness slider — it usually shows a sun icon and sits near the top. Drag the slider all the way to the right to reach maximum brightness.

If the Quick Settings panel does not appear, your Windows version may be older. Instead, go to Settings (Windows key + I), then select System on the left, then Display. Scroll down to find the brightness slider under "Brightness and color" and drag it to the right.

Some Windows laptops have dedicated brightness keys on the keyboard — usually marked with a sun symbol on the F1 through F12 keys. Hold Fn and press the brightness-up key (often F2 or F3) to increase brightness without opening any menu. This method works even when your computer is locked.

Using Mac brightness controls

The F1 key raises brightness on most Mac keyboards. Press it repeatedly until your screen reaches the brightness you want. On newer MacBook models, you may need to hold Fn and press F1. There is no menu to open — the change happens when ready.

If the F1 key does not work, open Control Center by clicking the icon in the top-right corner of your menu bar (it looks like a rectangle with sliders). Find the brightness slider and drag it to the right. You can also add brightness to your menu bar for one-click access: go to System Settings > Control Center and toggle "Brightness" on.

On iMac and Mac mini computers connected to an external monitor, brightness controls work the same way, but they adjust only the monitor's software brightness if it supports it. If your monitor has physical buttons, those may be faster.

Adjusting brightness on desktop monitors

Desktop monitors have their own brightness controls separate from your computer. Look for physical buttons on the front or bottom edge of the monitor — usually a row of four to six buttons. One is typically labeled with a sun icon or brightness symbol. Press it repeatedly or hold it to increase brightness. Some monitors use a menu system where you press one button to open an on-screen menu, then use arrow buttons to navigate to brightness and adjust it.

If you cannot find physical buttons, check the back of the monitor for a control panel. Some older monitors have brightness adjustment on the back panel instead of the front. Refer to your monitor's manual if you are unsure — the model number is usually printed on the back or bottom.

Modern monitors sometimes include software control panels you can read from the manufacturer's website. This lets you adjust brightness from your computer instead of using physical buttons, but the physical buttons are usually faster and do not require software installation.

Brightness settings that stay after restart

Your computer remembers brightness settings automatically on most devices. When you adjust brightness using keyboard shortcuts or system settings, that level is saved. The next time you turn on your computer, it will return to that brightness level.

If your brightness keeps resetting to a lower level, your computer may have adaptive brightness turned on. This feature automatically lowers brightness to save battery power. On Windows, go to Settings > System > Display and toggle off "Adaptive brightness." On Mac, go to System Settings > Displays and uncheck "Automatically adjust brightness."

When brightness controls are not working

If your brightness keys do nothing, check whether your keyboard driver is up to date. On Windows, go to Device Manager (right-click the Start button and select it), expand Keyboards, right-click your keyboard, and select Update driver. On Mac, brightness keys usually work without drivers, so if they fail, restart your computer first.

If restarting does not help, your monitor cable may be loose. Turn off your monitor, check that the cable connecting it to your computer is fully plugged in on both ends, and turn it back on. For laptop screens, a loose connection is rare, but you can try restarting your computer to reset the display driver.

Some monitors have a power-saving mode that locks brightness controls. Check the monitor's physical menu (using the buttons on the front) to see if brightness adjustment is disabled. If it is, enable it in the monitor's settings menu.

Frequently Asked Questions

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

Most laptops lower brightness automatically when running on battery to save power. Plug your laptop back in, or go to Settings > System > Display and turn off "Adaptive brightness" to keep the same brightness on battery power. Note that this will drain your battery faster.

Can I make my screen too bright and damage it?

No. Maximum brightness will not damage your screen, but it may cause eye strain if you use it for long periods. If your eyes feel tired, lower the brightness to a comfortable level or take breaks from the screen.

My monitor has a brightness button but it does not work. What should I do?

The button may be locked in the monitor's menu. Press the menu button (usually in the center of the button row) to open the on-screen menu, look for a "Lock" or "Control Lock" option, and disable it. If that does not work, try unplugging the monitor for 30 seconds and plugging it back in to reset it.

Is there a way to make my screen brighter than the maximum setting?

No, the maximum brightness setting is the limit your hardware supports. If you need more light, move your desk closer to a window or add a desk lamp. Some monitors have a "dynamic contrast" or "boost" mode that can make bright areas appear brighter, but this is not the same as increasing overall brightness.

Why is my screen brightness stuck at a low level?

Check whether adaptive brightness is on — it automatically lowers brightness in dim rooms. Go to Settings > System > Display on Windows or System Settings > Displays on Mac and turn it off. If that does not help, restart your computer to reset the display driver.