What to do if the brightness of the laptop does not change

• The brightness setting of your computer plays an important role in reducing eyestrain and in the battery life of your device.
• You can change the screen brightness setting anytime you want to suit your needs.
• However, sometimes the brightness level may not change. If you have the same problem, this guide is for you.
• This guide is part of the larger Windows 10 Troubleshooting Center in WindowsReport. Feel free to bookmark it for more helpful tips and tricks.

Brightness issues on your computer are generally associated with display drivers and other power settings, which you may or may not be aware of.

If Windows doesn’t allow you to adjust the brightness on your PC or laptop, these are the first two areas to check in addition to trying the usual common solutions, such as restarting your computer or updating Windows.

While the Windows update will work to install the latest drivers that might be pending in the update tray, there are other solutions you can try listed below and see if that helps you get back to the proper resolution and brightness for your machine.

Keep in mind that each model of your laptop, as well as the operating systems, are different, even when you check the settings for each fix.

We have written extensively on black screen problems before. Bookmark this page in case you need it later.

Contents index

• What to do if the brightness of the laptop does not change / the slider does not work?
  • Update display adapter drivers
  • Enable adaptive brightness
  • Enable PnP monitor
  • Update the registry

What to do if the brightness of the laptop does not change / the slider does not work?

1. Update display adapter drivers
2. Enable adaptive brightness
3. Enable PnP monitor
4. Update the registry

1. Update display adapter drivers

1. Right-click Start  and click  Device Manager .
2. Expand Display adapters .
3. Right-click the Display Adapter in the list and click Update Software Driver .
4. Select the option to automatically search for  updated driver software .
5. Restart  the computer after your update and check.

Learn everything there is to know about updating drivers from our comprehensive guide!

You can also try getting the latest drivers from your computer manufacturer’s website and downloading and installing the latest display and chipset drivers. To do this:

1. Right click on Start
2. Select Device Manager
3. Find the display driver and click on it to expand the list
4. Right click on the specific display driver
5. Select Uninstall
6. Go to the Software and Drivers subsection (depending on the brand of laptop this name may change) or search for drivers using Google so you can get a direct link to your device manufacturer’s website.
7. Once you are on the website, search and download

Install the appropriate drivers missing from your laptop that may cause the brightness adjustment problem.

2. Enable adaptive brightness

1. Click Start and select Control Panel
2. Select power options

3. Click the Change plan settings link next to your current power plan
4. Click Change advanced power settings

5. In the new window, click on Display to open the listings below it.
6. Find and click each of the following … Screen brightness, dimmed screen brightness, and Enable adaptive brightness
7. Change each of these to your desired setting
8. Click Apply
9. Click ok

3. Enable PnP monitor

1. Click Start and select Devi Ce Manager
2. Click monitors

3. Right click on the Generic PnP monitor to see if it is enabled
4. If it is not enabled, click Enabled Device . If enabled, disable it
5. Click on the Action tab in the top menu of Device Manager
6. Select Scan for hardware changes

7. Run the scan

4. Update the registry

If you still can’t adjust the brightness on your laptop, try updating the registry.

Note: This solution contains steps that are part of modifying the registry. Be aware that serious problems can occur if you do this incorrectly. Make sure you follow these steps carefully and correctly.