FIX: Windows 10 brightness slider not working

In this tutorial, learn how to fix Brightness control not working on Windows 10 PC or laptop.

– If your display driver is broken, you won’t be able to adjust the brightness of your computer in Windows 10.

– Check the power choices settings if the Windows brightness does not change.

– If your system’s display settings aren’t working, you can try modifying the registry.

– If you can’t control the brightness on your laptop, ensure sure your drivers are up to date.

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Display drivers and other power settings, which you may or may not be aware of, are generally linked to brightness difficulties on your computer.

Apart from trying the standard popular repairs like restarting your computer or updating Windows, these are the first two areas to check if Windows won’t let you increase brightness on your PC or laptop.

While updating Windows will install any waiting drivers in the updates tray, there are a few additional options you can try, which are outlined below.

Even as you verify the settings for each patch, keep in mind that each model of your laptop, as well as operating system, is unique.

When the brightness on your laptop, such as an Asus VivoBook, HP, or Dell, stops working, you can use the remedies below.

How To Fix Windows 10 Brightness Slider Not Working Issue

1. Update the display adapter drivers

1. Go to Start by right-clicking on it and click Device Manager.

2. Expand Display Adapters.

3. Click on Update driver software after right-clicking on the Display Adapter mentioned.

4. Select the option automatically search for the updated driver software.

5. After the computer has been updated and validated, restart it.

You can also go to the manufacturer’s website for your computer and download and install the newest display and chipset drivers.

Install any missing drivers that may be causing the brightness adjustment issue on your laptop. If this fails, we suggest using a third-party driver updater.

The tool will show you which drivers need to be updated. If you need to update multiple drivers at once, you can do so by selecting the Update button next to each one.

It is programmed to download and install all of the necessary drivers for you. Getting the appropriate driver versions is the best method to avoid irreversible damage to your PC.

To ensure that everything goes well and that you don’t run into any GPU driver issues, utilize a comprehensive driver update helper such as Driver Easy tool, which will address your problems in just a few clicks. To update your drivers safely, follow these simple steps:

1) First, download and install Driver Easy on your computer.

2) Launch Driver Easy and click the Scan Now button. Driver Easy will scan your computer and detect any problem drivers.

3) To get the most recent and accurate driver for your sound device, click the Update icon next to it or headset.

You can also update all outdated or missing drivers on your computer by clicking the Update All option in the bottom right corner. (You’ll be prompted to upgrade to the Pro version if you don’t already have it when you click Update All.)

Restart your computer after updating the display adapter drivers. After that, log in again to check if the issue has resolved.

2. Enable adaptive brightness

1. Navigate to the Windows search bar and type Control Panel.

2. Choose Power Options.

3. Next to your current power plan, click the Change plan settings option.

4. Select Change advance power settings.

5. Click Display in the new window to see the listings beneath it.

6. Find and select Display brightness, Dimmed display brightness, and Enable adaptive brightness from the drop-down menus.

7. Make the desired changes to each of them.

8. Choose Apply.

9. Click on OK.

Adaptive brightness is a feature of the Windows operating system that employs an ambient light sensor to automatically change the brightness of a display to its surroundings.

3. Enable the PnP Monitor driver

1. Select Device Manager with a right-click on Start.

2. Choose Monitors.

3. Check if Generic PnP monitor is activated by right-clicking on it.

4. Click Enabled device if it isn’t already enabled. If it’s turned on, turn it off.

5. In Devices Manager’s top menu, select the Action tab.

6. Choose Scan for Hardware Changes.

7. Run the scan.

PnP stands for plug-and-play hardware, which does not require the installation of a driver. You can think of it as a generic display driver that Windows will install automatically.

4. Update the registry

1. Navigate to the Start menu by right-clicking on it and type RegEdit.

2. To open, click on it.


4. Choose System.

5. Go to to ControlSet001.

6. Tap on Control.

7. Choose the below registry and set FeatureTestControl DWORD’s value data to 0000ffff:


If you still can’t get your laptop’s brightness to adjust, try changing the registry. Before you make any changes to the registry, make a backup and then restore it if something goes wrong.

The steps in this solution are part of the registry modification process. Please keep in mind that if you perform this improperly, major issues may arise. Make sure you follow these instructions carefully and accurately.

If the problem persists, you should seek professional assistance. If your screen is broken, updating your drivers will not help. If the display is afflicted by hardware faults, you’ll almost certainly need to replace it.

In this video, we are gonna show you how to fix screen brightness issue on Windows 10:

If you’re still having difficulties adjusting the brightness on your Windows 10 PC, let us know in the comments area below.

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