Windows keeps changing brightness automatically seems to be the issue that bothers users a lot. The ambient light sensor that is in most of the newer machines ensures that the screen brightness is adjusted automatically based on the light of surrounding at a certain time. This is the Windows 10 feature mainly, but not all people like this unstable brightness of the display. This is not the issue of the updated or not properly upgraded OS, though. Displays on gadgets such as laptops and tablets may use ambient light sensors in order to detect and adjust to surrounding levels of light. The adaptive brightness feature in Windows tracks ambient light sensors, identifying changes in ambient light and automatically adjusting the brightness of display based on natural lighting conditions around.
To manually adjust the screen brightness, we suggest following these troubleshooting steps:
Click Start, then select Settings.
Choose System, then select Display.
Under Brightness and color, move the Change brightness slider to adjust the brightness.
How to Turn off Auto Brightness
Click the Start menu and type Control Panel to open up the Control Panel window.
Control Panel highlighted from Windows 10 search box.
Click the green text Hardware and Sound.
Hardware and Sound highlighted from the Windows 10 Control Panel.
In the next window, click Power Options.
Here in the Power Options, click Change plan settings to the right of the computer’s Power Plan.
Click Change advanced power setting and a small window will appear.
Change advanced power settings highlighted from Power Options in Windows 10.
To the left of Display, click on the ‘Plus’ button to have a drop down menu appear.
Advanced settings Power Options for the Display in Windows 10.
You will see Enable adaptive brightness in that drop down menu.
Click Setting and set it to Off to disable the auto-brightness feature.
Turn off adaptive brightness
Open Control Panel.
Go to Hardware and Sound.
Select Power Options.
Click Change plan settings next to your current power plan.
Click Change advanced settings.
Expand Display.
Expand Enable adaptive brightness under it.
Turn it off for both battery and plugged in states.
Click OK.
Repeat this for all power plans you use.
Disable Adaptive Brightness
Step 1: Press Windows + S, input power in the empty box, and click Edit power plan from the search results.
Step 2: Click Change advanced power settings to open the Power Options window.
Step 3: Under the Advanced settings tab, expand Display > Enable adaptive brightness and set the setting’s status to Off.
Step 4: Click Apply and OK button to save changes.
FAQ
Why does my brightness keep going down when auto-brightness is off?
If the interior temperature of the device exceeds the normal operating range, the device will protect its internal components by attempting to regulate its temperature. If this happens, you might notice these changes: Charging, including wireless charging, slows or stops. The display dims or goes black
Why does Windows 10 keep dimming?
If your screen keeps dimming, you can go to disable this feature. Step 1: Press Windows + S, input power in the empty box, and click Edit power plan from the search results. … Step 3: Under the Advanced settings tab, expand Display > Enable adaptive brightness and set the setting’s status to Off.
Why does my computer randomly dim and brighten?
Hardware problems may be causing the screen to dim or brighten and that means you have to take the laptop in to be fixed. Your laptop’s battery, power supply unit, or graphics card may either have come loose or they may have been damaged. … If a hardware component has been damaged, you will have to replace it.
How do I stop Windows auto adjusting brightness?
Go to Start > Control Panel > Hardware and Sound > Power Options > Change plan settings > Change advanced power settings > select Display and turn Enable adaptive brightness to Off.
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