Troubleshoot Unchanging Screen Brightness on Windows 10

Are you struggling with unchanging screen brightness on your Windows 10? Let’s get to the bottom of this issue and find a solution.

Updating Display and Graphics Drivers

To troubleshoot unchanging screen brightness on Windows 10, it may be necessary to update your display and graphics drivers. Outdated or incompatible drivers can cause issues with screen brightness control. Here’s how you can update them:

1. Open the Device Manager by pressing the Windows key + X and selecting “Device Manager” from the menu.

2. In the Device Manager, expand the “Display adapters” category.

3. Right-click on your graphics card (e.g., NVIDIA, Intel, AMD) and select “Update driver.”

4. Choose the option to search automatically for updated driver software. Windows will then search for and install the latest drivers for your graphics card.

5. If Windows doesn’t find any updates, you can also visit the manufacturer’s website (e.g., NVIDIA, Intel, AMD) and download the latest drivers directly from their support page.

6. Once the drivers are updated, restart your computer to apply the changes.

Updating your display and graphics drivers can often resolve issues with unchanging screen brightness. If the problem persists, you can try other troubleshooting steps such as adjusting power settings, checking for malware or software bugs, or restoring default settings through the Control Panel.

Enabling Adaptive Brightness and PnP Monitor

To enable Adaptive Brightness and PnP Monitor on Windows 10, follow these steps:

1. Open the Start menu and type “Control Panel” to search for it.
2. Click on the Control Panel app to open it.
3. In the Control Panel, click on “Hardware and Sound” and then “Power Options.”
4. On the left side of the Power Options window, click on “Change plan settings” next to your selected power plan.
5. On the next screen, click on “Change advanced power settings.”
6. In the Advanced settings window, scroll down and expand the “Display” category.
7. Look for the “Enable adaptive brightness” setting and make sure it is set to “On” for both the “Plugged in” and “On battery” options.
8. Click on “Apply” and then “OK” to save the changes.

Next, let’s enable the PnP Monitor:

1. Press the Windows key + X on your keyboard to open the Power User menu.
2. From the menu, select “Device Manager.”
3. In the Device Manager window, expand the “Monitors” category.
4. Right-click on your monitor and select “Update driver.”
5. Choose the option to automatically search for updated driver software.
6. Windows will search for the latest driver for your monitor and install it if available.
7. After the driver installation is complete, restart your computer.

By enabling Adaptive Brightness and updating the PnP Monitor driver, you should troubleshoot any issues with unchanging screen brightness on Windows 10.

Adjusting Settings from Power Options

  • Accessing Power Options
  • Opening Control Panel
  • Clicking on “Hardware and Sound”
  • Selecting “Power Options”
  • Navigating to “Power Plans”
  • Choosing the desired power plan
  • Clicking on “Change plan settings”
  • Adjusting screen brightness level
  • Clicking on “Save changes”

Troubleshooting with Registry Edits and Hidden Devices

To troubleshoot unchanging screen brightness on Windows 10, you can try making registry edits and checking for hidden devices. These steps can help resolve any issues that may be causing the screen brightness to remain unchanged.

Registry Edits:

1. Press the Windows key + R to open the Run dialog box.
2. Type “regedit” and press Enter to open the Registry Editor.
3. Navigate to the following key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\ControlPanel\NameSpace\
4. Look for a key named “{DDA0B713-DA0D-4D4D-8BDD-CFF9EEA79DD4}”.
5. If the key exists, right-click on it and select “Delete”.
6. Close the Registry Editor and restart your computer.

Hidden Devices:

1. Press the Windows key + X and select “Device Manager” from the menu.
2. In the Device Manager window, click on “View” and select “Show hidden devices”.
3. Expand the “Monitors” and “Display adapters” sections.
4. Look for any devices that are grayed out or have a yellow triangle icon.
5. Right-click on any grayed out or marked devices and select “Uninstall”.
6. Restart your computer.

These steps should help resolve any issues with unchanging screen brightness. If the issue persists, it may be worth checking for driver updates or contacting the manufacturer for further assistance. Remember to always backup your registry before making any changes.


Why is my brightness button not working?

Your brightness button may not be working because the function key is disabled on your keyboard. To enable it, press the Fn + Esc keys simultaneously to toggle the function lock on and off. Enabling the function key should help fix the issue with your brightness button.

Why is my screen brightness not changing Iphone?

To address the issue of a non-changing screen brightness on an iPhone, ensure that the “Auto-Brightness” toggle in the Settings > Display & Brightness menu is turned off. This feature might conflict with manual brightness adjustments. After disabling it, attempt to modify the brightness using the slider in the Settings or Control Center to determine if it resolves the problem.

Why is my screen not dimming?

Your screen may not be dimming because the adaptive brightness setting is turned on. To fix this, go to Settings > Display on your Android device and disable the adaptive brightness option. Then, adjust the brightness bar manually to your preferred level.

Why is my screen brightness not changing?

Your screen brightness may not be changing due to several possible reasons. First, ensure that your power options in the Control Panel are not affecting the brightness. Additionally, check if your PC or laptop has automatic brightness adjustment enabled. Another potential solution is to update your display drivers.

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