Summary :

Although Windows 10 is a stable operating system in performance, some issues may also happen in some cases and you need to troubleshoot it. Today in MiniTool’s post, we will show you how to fix the issue of laptop brightness not changing.

Laptop Brightness Not Changing

Fix Brightness Control Missing; Can’t Adjust Brightness in Windows 10. The brightness slider on Windows 10 could be missing or greyed out due to various reasons, either due to a graphics driver problem or maybe a bug with the latest version of Windows. Here’s the list of methods we will be following in order to get the brightness slider fixed.
If your iPhone brightness not working in iOS 11 caused by some errors in iOS settings, you can try to fix this issue by resetting all settings on iPhone. And this operation won't cause any data loss, do it without worry. Go to 'Settings' 'General' 'Reset' 'Reset All Settings'.

Aug 13, 2019 If the brightness slider isn’t working due to known issues with the operating system, especially after a major feature update, then Microsoft is bound to address those immediately.

Adjusting the brightness of your device is an easy task you may perform every day. You can increase the brightness by day to make it easy to see the contents on the screen. Likewise, you can lower the brightness to adapt the light at night to let eyes rest.

However, some users reported that they couldn’t adjust the screen brightness. The brightness always keeps maximum, regardless of the power plan.

This issue may not impact your desktop since you can change the brightness via adjusting the monitor. But for some laptops, it is frustrating if Windows 10 can’t change brightness. Since the laptop is constantly running with the maximum brightness, the battery life may be affected.

Fortunately, you can easily fix this issue and we will introduce some methods to you in the following part. Let’s go to see how to troubleshoot it.

Tip: Is screen brightness not working? This related article - Top 5 Solutions to Windows 10 Brightness Not Working is helpful.

Fix: Can’t Adjust Brightness Windows 10

Adjust the Brightness from Power Options

To fix the issue of laptop brightness not changing, you can tweak some power options settings. It is also useful if you encounter the problem in Windows 7 and 8.

See what you should do:

Step 1: Open Control Panel in Windows 10 and view all the items by Category.

Step 2: Navigate to Hardware and Sound > Power Options.

Step 3: Click the Change plan link next to your selected plan.

Step 4: Click Change advanced power settings.

Step 5: Scroll down to find Display and expand the drop-down menu.

Step 6: Expand Display brightness and adjust the value, do the same for the Dimmed display brightness menu, and make sure Enable adaptive brightness is Off.

Step 7: Click the Apply button and the screen brightness will be changed to the values you set.

Adjust Brightness from the Graphics Properties Menu

If your laptop brightness won’t change, you can adjust it via the Graphics Properties menu. This menu is decided by your graphics card driver and it may be different based on the version you have.

The following steps are for the Intel graphics card.

Step 1: Right-click the empty space on the desktop and choose Graphics Properties.

Step 2: Click Display > Color Settings.

Step 3: Move the Brightness slider to adjust the brightness. Then, click Apply.

Update Your Graphics Card Driver

If the above ways fail to fix laptop brightness not changing, the issue may be related to your graphics card driver. Updating the driver will be helpful.

Step 1: Go to Device Manager, expand Display drivers, and right-click your driver to choose Update driver.

Step 2: Click Search automatically for updated driver software and then follow the wizards on the screen to finish the update.

Alternatively, you can check what graphics card you have, go to the manufacturer’s website, download, and install a new version for your graphics card driver.

Re-enable your PnP Monitor

When encountering the issue of laptop brightness not changing, perhaps the PnP monitor is disabled due to some driver or system updates, preventing you from adjusting the screen brightness. To fix this issue, re-enable your PnP monitor if you are using it.

Step 1: Also open Device Manager via the Start menu.

Step 2: Right-click the PnP monitor and choose Enable device.

Fix Catalyst bug via Registry Editor (ATI GPUs)

If you are an ATI user and have installed Catalyst (especially version 15.7.1), you may encounter the issue - Windows 10 can’t change brightness. You can follow these steps to fix the issue:

Step 1: Type regedit to the search box and click the result to run Registry Editor.

Step 2: Go to HKEY_LOCAL_MACHINE SYSTEM ControlSet001 ControlClass {4d36e968-e325-11ce-bfc1-08002be10318} 0000.

Step 3: Double-click MD_EnableBrightnesslf2 and change its value to 0. Do the same for KMD_EnableBrightnessInterface2.

Step 4: Go to HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Control Class {4d36e968-e325-11ce-bfc1-08002be10318} 0001.

Step 5: Respectively double-click MD_EnableBrightnesslf2 and KMD_EnableBrightnessInterface2, and then change the value to 0.

Step 6: Exit Registry Editor and restart the PC. Then, the issue of laptop brightness not changing should be resolved.

A good choice to avoid eye strain is to adjust screen brightness. How to change brightness on Windows 10? Multiple methods are offered in this post.

Final Words

Is your laptop brightness not changing in Windows 10? These five methods are effective for you to easily get rid of the trouble and you can have a try now.

Windows Brightness Control slider is one of the very important utilities for Windows users. If it is not working properly, that needs to be fixed immediately. The brightness control lets you prevent your eyes from unnecessary strain and saves battery life while working on a PC for long hours. You can always change the brightness settings as per your needs. However, sometimes you aren’t able to modify the brightness. If you are facing the same problem, this guide is for you.

Usually the brightness control not working error arises because of the display drivers or the Windows power settings. Also, the first trick to apply when you aren’t able to control windows brightness includes restarting your PC or checking for Windows update.

Even after trying these basic ways, you can’t use a brightness control slider, check out the ways explained below.

How To Fix: Windows 10 Brightness Control Slider Not Working!

In this section, we’ll cover:

Update Display Adapters Drivers
Enable Adaptive Brightness
Enable PnP Monitor
Update The Registry

Method 1: Update Display Adapter Drivers

The first and the foremost ways to fix the brightness control not working on Windows 10 is by updating the Display Adapter. Here’s how to do this manually:

Open Device Manager from the Start Menu.

Head to Display Adapters and click the arrow beside to expand the menu.
Now right click on the available driver and choose to Update Driver.

You’ll see a dialog box asking you to choose one option out of two.
Select Automatically search for the updated driver software.

Wait for the process to finish. Once done, restart your PC to apply changes.

Alternatively, we always recommend you to have an automatic Driver Updater installed on your PC so that you get timely updates of any outdated or corrupted drivers that need to be fixed. This will prevent you from such random errors. We suggest using Smart Driver Care, a robust driver updater utility for your Windows PC. It takes utmost care of your system drivers and lets you fix all the corrup

Brightness Setting Not Working