Laptop Display Automatically Changing Brightness of Screen

Fix 1: Disable Adaptive Brightness

Some devices use ambient light sensors and provide the adaptive brightness feature that can adjust screen brightness automatically based on the natural lighting conditions around. 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 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.

After that, you can check if the “screen keeps dimming Windows 10” has been resolved. If your computer doesn’t have this feature or this method fails to work, you can move on to the next solution.

See also:


How to Automatically Adjust Brightness When Youre Plugged In

RELATED: Should You Use the Balanced, Power Saver, or High Performance Power Plan on Windows?

You can set different display brightness levels on your laptop or tablet based on whether or not you’re plugged into an outlet or not. For example, you could have it set to a high brightness level when you’re plugged in, and a lower one when you’re on battery power. Windows would then automatically adjust your brightness.

To adjust this, open the Control Panel. Select “Hardware and Sound,” select “Power Options,” and click the “Change plan settings” link next to the power plan you’re using. You’re probably using the Balanced power plan.

Configure different screen brightness levels for “On battery” and “Plugged in” under “Adjust plan brightness.” This setting is tied to your power plan. You can configure different screen brightness levels for different power plans and switch between them, if you like (though we don’t think power plans are really necessary).

2)Press brightness-up key when starting up

This is another fast and easy yet effective option to fix your dim lenovo laptop screen.

a) Completely shut down your Lenovo laptop.

b) Press the power button to start up your laptop. In the meantime, press and hold the brightness-up key on the keyboard, which is usually a function key (F1-F12).

c) After the start-up, you can see the screen of your Lenovo laptop has been brightened up.

Check the Startup Programs List

If your Windows 10 screen dims a few seconds after booting the computer, a startup program might be the reason. Your system loads many programs at the boot, and it’s worth checking this programs list to find any suspicious items.

  1. Access the Start menu, search for Settings, and select Settings in the search results.
  2. Select Apps on the Settings window.
  1. On the left sidebar, select Startup.
  2. On the right, all of the programs with the toggle saying On are allowed to launch at the boot of your computer.
  1. Turn all or only suspicious programs off in this list. A suspicious program is basically the one that you recently installed before your screen issue started occurring.
  2. Restart your computer and see if the issue is gone.

Turn the Screen’s Power Saving Mode Off

If your video or graphics card comes from a reputed manufacturer, it’s likely a manufacturer tool is installed on your PC. This tool helps you set up various options for your card.

It’s possible that this tool has enabled the power saving mode for your graphics card. In this case, the mode automatically dims your screen after a certain time.

To fix this, simply turn off the power saving option in this utility. For the following example, we’ll use an Intel utility to disable the power saving mode.

  1. Access the Start menu, search for Intel Graphics Control Panel, and select that option in the results.
  1. Select Power on the main screen of the utility.
  1. Select On Battery from the left sidebar.
  2. On the right pane, under Display Power Saving Technology, select Disable.
  1. Select Apply at the bottom to save your changes.

Your Windows 10 PC’s screen should hopefully no longer dim automatically. And if this is the case, please let us know what method worked for you in the comments below.


Amanda Follow us

Position: Columnist

Amanda has

Amanda Follow us

Position: Columnist

Amanda has been working as English editor for the MiniTool team since she was graduated from university. She enjoys sharing effective solutions and her own experience to help readers fix various issues with computers, dedicated to make their tech life easier and more enjoyable.

She has published many articles, covering fields of data recovery, partition management, disk backup, and etc. In order to provide more useful tips and information, she is still committed to expand her technical knowledge.


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