Adjusting the brightness on your Windows 10 computer may seem like a straightforward task, but for some users, this seemingly simple function can become a significant problem. The inability to modify screen brightness can lead to eye strain and a less-than-optimal user experience. 

This issue can arise for various reasons, including outdated hardware drivers, incorrect system settings, or conflicts with third-party software. In this article, we will explore each of these potential causes in-depth and provide comprehensive solutions to resolve the brightness control problem on Windows 10. 

Whether you’re a seasoned tech professional or a casual computer user, the step-by-step guidance provided here is designed to assist you in regaining control over your screen’s brightness settings.

Understanding the Issue

Screen brightness control is an essential feature for customizing visual comfort and preserving battery life on portable devices. When the ability to adjust brightness in Windows 10 is lost, identifying the underlying cause becomes crucial to addressing the problem. Here’s an in-depth view of the potential issues:

Common Problems

The symptoms related to brightness control failure are often similar among different users, which include:

  • Unresponsiveness to Brightness Controls: The brightness sliders and keyboard shortcuts do not respond.
  • Inconsistent Brightness Levels: Brightness may change randomly or not reflect the settings.

Possible Causes

The factors contributing to brightness control failure can vary but commonly include:

  1. Outdated Graphics Drivers: The software controlling the display may become outdated or incompatible with a recent system update.
  2. Misconfigured Power Settings: Incorrect power management settings can override brightness control functions.
  3. Operating System Bugs: Sometimes, updates or errors within Windows 10 itself may lead to issues with brightness adjustments.
  4. Third-Party Software Conflicts: Applications that manage screen display settings can interfere with native brightness controls.
  5. Hardware Failures: In rare cases, the issue may stem from physical damage or malfunction of display hardware.

Understanding these common problems and potential causes helps to form a basis for troubleshooting and resolving the issue. While the problem may seem baffling at first glance, a structured approach to diagnosing and addressing the underlying factors can lead to a successful resolution. The subsequent sections will provide specific methods to remedy these underlying issues based on the insights provided here.

Fixing the Brightness

Adjusting screen brightness on Windows 10 may be hindered due to several underlying issues. Below are actionable solutions to tackle the root causes:

Method 1: Updating Drivers

Outdated or incompatible drivers often lead to brightness control failures. Here’s a systematic approach to updating them:

  1. Open Device Manager: Press ‘Win + X’ and choose ‘Device Manager’. 
  1. Find Display Adapters: To start, Expand the section titled ‘Display adapters’.
  1. Update Driver: Next, right-click on the graphics adapter and choose ‘Update driver’, then carefully follow the on-screen provided instructions.

Method 2: Using Windows Settings

Incorrect settings can also cause this problem. Adjusting brightness through Windows Settings can resolve the issue:

  1. Access Display Settings: Right-click on the desktop and select ‘Display settings.’
  1. Adjust Brightness: Locate the ‘Change brightness’ slider and modify it according to your preferred level.

Method 3: Reset Your Power Settings

Power settings that have been changed or corrupted may affect brightness control. Restoring them to the default settings can resolve the problem:

  1. Open Control Panel: Write ‘Control Panel’ into the Start menu search, go ahead and select it.
  1. Navigate to Power Options: Click on ‘Hardware and Sound. then ‘Power Options.’

Then select ‘Power Options.’

  1. Choose a Power Plan: Select one of the default power plans, such as ‘Balanced’ or ‘High performance.’
  1. Reset Plan to Default: Start by clicking on the ‘Change plan settings,’ After that select the ‘Restore default settings for this plan’ option. 


Brightness issues in Windows 10, though annoying, can often be fixed with some diligence and patience. By following the above methods, you should be able to adjust your screen brightness once again. Happy computing!