Fixed an issue where the laptop screen brightness could not be adjusted
Here I will guide you how to Fix the error of not being able to adjust the brightness of the laptop screen at home.
1. Update the operating system version again
The latest updated version will help you fix the bugs of the old version so give it a try. By clicking on Check for updates section to check if your laptop is supported for updates.

2. Update the monitor driver
Step 1: Right-click on the windows frame and then select Device Manager.

Step 2: Right-click on Display adapters => Select Update driver.

Step 3: Then click on the dialog box Search automatically for updated driver software to search for the update.

Step 4: If an update is found and accepted, it may take a few minutes.

3. Reset the monitor driver
As in updating the driver, right-click the Display adapter and select Disable device. Then the screen will turn off and restart you just need to re-enter Device Manager and enable the device again.

4. Reinstall monitor driver
Step 1: Click the Uninstall device option.

Step 2: Click the option Scan for hardware change to reinstall the driver.

5. Fix the error with the Troubleshooter feature
Step 1: Go to settings and select Update & Security.

Step 2: Go to Trooubleshoot => select Power => Run the troubleshooter

Good luck.
You should read it
- Fix the error of not adjusting screen brightness on Windows 10
- Error not adjusting screen brightness after upgrading Windows 8.1
- What is Nit screen brightness?
- Summary of driver error codes on Windows and how to fix them (Part 1)
- Summary of driver error codes on Windows and how to fix (Last part)
- How to fix the error of the brightness adjustment key not working in Windows 11
- How to fix VPN error 619
- What is Nit when it comes to screen brightness?
- Instructions to fix blue screen error on computer
- How to fix A20 Error when starting the computer
- How to Control the Brightness of Your Computer With Windows 7
- Instructions to adjust the screen brightness of Android phones
May be interested
How to fix a computer error without Realtek HD Audio Manager
Computer crashes, slow, lag and how to fix them
Instructions on how to fix blue screen errors on computers running Windows
How to fix Computer loss sound after Windows 10 Update
How to fix the error of the computer receiving USB but not displaying data
3 ways to fix the error of not receiving USB USB after installing Windows