How To Change Brightness On Windows 11

Tips
1

I just upgraded to Windows 11 and I can’t figure out how to change my laptop’s screen brightness. The shortcut keys don’t seem to work and I can’t find the brightness slider in Settings or the Action Center. It’s either too bright at night or too dim during the day. Can someone walk me through where the brightness controls are in Windows 11 and how to fix it if the option is missing?

2

Had the same thing on a fresh Windows 11 install. Here is what to check, in order.

  1. Try the Quick Settings panel

    1. Click the network / volume / battery icons cluster on the right side of the taskbar.
    2. You should see a brightness slider under the volume slider.
    3. If it is missing, move on to the steps below.

  2. Check that Windows sees your display as “internal”

    1. Right click the desktop.
    2. Click Display settings.
    3. Under “Brightness & color”, look for a “Brightness” slider.
    4. If it is missing and it says something like “Display 1: Generic Non‑PnP Monitor” on Microsoft Basic Display Adapter, Windows is using a fallback driver, so brightness keys will not work.

  3. Install or update the graphics driver
    For Intel

    1. Press Win + X.
    2. Click Device Manager.
    3. Expand Display adapters.
    4. Right click Intel UHD / Iris / whatever it shows.
    5. Click Update driver, then “Search automatically”.
      If that does nothing, download the latest Intel driver from Intel’s site or your laptop maker’s support page and install it.

    For NVIDIA / AMD laptops with dual graphics, still install the Intel or AMD integrated driver first, then the NVIDIA or AMD discrete driver from your laptop maker.

    After driver install, reboot, then check Display settings again for the brightness slider.

  4. Install your laptop’s chipset and “hotkey” / “ACPI” drivers
    Go to your laptop brand’s support page, enter your exact model, and install in this order:

    1. Chipset / Intel ME / AMD chipset package.
    2. “Hotkey”, “Function Key”, “ATK Package”, “Dell QuickSet”, “HP Hotkey Support”, “Lenovo Hotkeys”, or anything with “ACPI” or “System Interface”.
      These control the brightness Fn keys. After install, reboot and test the keys.

  5. Check Windows Mobility Center

    1. Press Win + X.
    2. Click Mobility Center.
    3. Look for a brightness slider there.
      If it works here but not with keys, it almost always means the hotkey driver from the vendor is missing.

  6. Disable Microsoft Basic Display Adapter if it is interfering

    1. In Device Manager, under Display adapters, if you see “Microsoft Basic Display Adapter” alongside your main GPU, right click the basic one and choose Disable device.
      Do not uninstall your real Intel / AMD / NVIDIA device.
      After that, log out and log back in, then try the slider again.

  7. Check for external monitor priority

    1. Press Win + P.
    2. Select “PC screen only” or “Duplicate”.
      Brightness controls only work on the built‑in laptop display, not on external HDMI / DisplayPort monitors. If your external is set to “Second screen only”, Windows will hide the brightness slider.

  8. Quick temporary workaround with Intel Graphics Control
    If you have Intel drivers installed but the keys still refuse to work:

    1. Right click desktop.
    2. Open Intel Graphics Command Center or Intel HD Graphics Control Panel.
    3. Go to Display, then Color or Brightness / Contrast.
    4. Adjust brightness from there.
      Clunky, but it works until the hotkey driver is sorted.

  9. If nothing fixes it

    1. Go to Settings > System > Troubleshoot > Other troubleshooters.
    2. Run the “Power” troubleshooter.
    3. Then check Windows Update, including the Optional updates section, and install any “Display”, “System”, or “Firmware” items.

On my HP laptop, brightness slider was missing until I installed:
• AMD chipset driver
• HP Hotkey Support
• The proper AMD graphics driver

After reboot, the slider reappeared in Quick Settings and Fn + F2 / F3 started working again.

3

Couple more things you can try that aren’t just repeating what @hoshikuzu already covered:

  1. Check for “Adaptive brightness” / content adaptive brightness
    Sometimes Windows is actually changing brightness for you and it feels like the slider is gone or “stuck”.

    • Go to Settings → System → Display
    • Click “Brightness & color” area
    • Look for something like:
      • “Change brightness automatically when lighting changes”
      • or “Automatically adjust contrast based on the displayed content”
    • Turn those off and see if the screen finally behaves like a normal screen again.

  2. Make sure you’re not stuck on HDR logic
    If your laptop panel is “HDR capable”, Windows loves to flip HDR on and then brightness controls get weird.

    • Settings → System → Display
    • Click your main display
    • If you see an “Use HDR” toggle, turn it OFF temporarily
    • Close Settings, reopen, and see if the normal brightness slider shows up
      HDR sometimes makes it look like the slider does nothing or is missing when in reality Windows is treating brightness differently.

  3. Check Power Plan / advanced settings
    Once the driver stuff is sorted (agree with most of what @hoshikuzu said, although I rarely bother with Mobility Center personally), Windows can still ignore your keys due to power settings.

    • Control Panel → Hardware and Sound → Power Options
    • Next to your active plan, click “Change plan settings”
    • Then “Change advanced power settings”
    • Expand “Display”
    • Make sure “Enable adaptive brightness” is OFF for both On battery and Plugged in
      If that is ON, your manual brightness is constantly being overriden.

  4. BIOS / UEFI setting for hotkeys
    On some laptops (Lenovo, Dell, Acer, etc.) the Fn brightness keys literally depend on a firmware toggle.

    • Reboot and spam Esc, F2, F10 or Del (depends on brand) to get into BIOS/UEFI
    • Look for something like:
      • “Action Keys Mode”
      • “Hotkey Mode”
      • “Special Function Mode”
    • Try toggling it: if it is “Function keys first”, set to “Multimedia / Hotkeys first” or vice versa
      Save & exit, then test the brightness keys in Windows 11 again.

  5. Roll back a broken graphics driver
    Sometimes the Windows 11 upgrade pulled a bad driver from Windows Update. If the slider is gone after an update:

    • Win + X → Device Manager
    • Expand Display adapters
    • Right click your GPU → Properties
    • Go to “Driver” tab
    • If “Roll Back Driver” is clickable, use it
    • Reboot and see if brightness returns
      I’ve had Windows give me a “newer” driver that killed brightness controls on a Ryzen laptop until I rolled back.

  6. Create a quick manual brightness shortcut as a temp fix
    Not pretty, but if you just want it usable while you sort drivers:

    • Press Win + R, type powrprof.cpl and hit Enter
    • Use two power plans like:
      • “Dim” plan with low brightness
      • “Bright” plan with high brightness
    • Use the battery icon on the taskbar to switch plans quickly
      It’s clunky, but beats staring at a full‑blast white screen at 2am.

  7. Double check you are actually on laptop display
    Slight disagreement with part of the earlier advice: it’s not just external monitor priority that breaks it, sometimes even “Duplicate” with a TV over HDMI can neuter the slider depending on the driver.
    Quick test:

    • Unplug every external display
    • Log out, log back in
    • Then check Settings → Display again
      If the slider magically appears when the cable is out, it’s the GPU / external display handling that’s messing with things.

If after all that there is still zero slider and the keys do nothing, I’d suspect either:

  • Wrong / generic display INF from Windows Update, or
  • Vendor control software missing (Lenovo Vantage, Dell Power Manager, HP Support Assistant, etc.)

In that case, grab the full driver + utilities bundle from your laptop maker and install the whole thing, not just the single GPU driver. Sometimes the brightness hooks are hidden in their “bloat” sadly.