By default, all laptops dim their display when running on battery power. Decreasing the brightness often helps conserve battery power, allowing you to use your laptop longer when it's unplugged. However, if you want to increase the brightness when on battery power, you can adjust those settings.
Power settings
In Microsoft Windows, you can adjust the settings for brightness when the laptop is running on battery power.
If your iPhone brightness not working in iOS 11 caused by some errors in iOS settings, you can try to fix this issue by resetting all settings on iPhone. And this operation won't cause any data loss, do it without worry. Go to 'Settings' 'General' 'Reset' 'Reset All Settings'. After that I noticed that TV brightness remain the highest even though brightness is - 1416648. Screen brightness setting not working. Aug 16, 2018 The brightness isn't stuck on maximum I can change it from the brightness section in windows 10,but when I want to use the brightness keyboard keys, they don't work.Also I have Nvidia and intel graphic cards and their drivers are already installed. Feb 28, 2021 SOLVED: Brightness Settings Not Working in Windows 10 Microsoft is urging its user to upgrade, and as a result, more and more Windows users are upgrading to Windows 10. However, upgrading or installing a new operating system may cause many unexpected issues. Unable to change the brightness after an update to Windows 10 is a common issue. SOLVED: Brightness Settings Not Working in Windows 10 Microsoft is urging its user to upgrade, and as a result, more and more Windows users are upgrading to Windows 10. However, upgrading or installing a new operating system may cause many unexpected issues. Unable to change the brightness after an update to Windows 10 is a common issue.
Windows 8 and Windows 10
- Open the Windows power settings by right-clicking the power or battery icon in the Systray and selecting Power Options.
- In the Power Options window, select the High performance power plan, if available.
If you do not see a High performance power plan in Power Options, you can create one to use by following the steps below.
- In the Power Options window, in the left navigation pane, click the Create a power plan link.
- Under Create a power plan, select the High performance option.
- In the Plan name text field, enter a name for the new power plan, then click Next.
- Under Change settings for the plan, select an option for Turn off the display and Put computer to sleep. You can choose to leave both set to Venver, or select the number of minutes or hours from the drop-down list for each option.
- Click Create to create the new power plan.
After creating the new power plan, it is automatically selected as your current power plan.
Windows Vista and Windows 7
If you have Windows Vista or Windows 7, try one of the options below to increase screen brightness while on battery power.
- Click the power or battery icon in the Systray.
- Select the High performance option to increase screen brightness.
or
- Right-click the power or battery icon in the Systray.
- Select Power Options or similar entry in the pop-up menu.
- In the Power Options window, select the High performance power plan and click OK.
Older computers or BIOS setup
Older computers or those not running Windows often can adjust the brightness settings through BIOS setup.
Once in the BIOS setup, look under the power, display, or video setting menu, depending on the make and model of your laptop. Check for brightness setting options under those possible menus.
Additional information
- See our battery definition for further information and related links.
Windows Brightness Control slider is one of the very important utilities for Windows users. If it is not working properly, that needs to be fixed immediately. The brightness control lets you prevent your eyes from unnecessary strain and saves battery life while working on a PC for long hours. You can always change the brightness settings as per your needs. However, sometimes you aren’t able to modify the brightness. If you are facing the same problem, this guide is for you.
Usually the brightness control not working error arises because of the display drivers or the Windows power settings. Also, the first trick to apply when you aren’t able to control windows brightness includes restarting your PC or checking for Windows update.
Even after trying these basic ways, you can’t use a brightness control slider, check out the ways explained below.
How To Fix: Windows 10 Brightness Control Slider Not Working!
In this section, we’ll cover:
- Update Display Adapters Drivers
- Enable Adaptive Brightness
- Enable PnP Monitor
- Update The Registry
Method 1: Update Display Adapter Drivers
The first and the foremost ways to fix the brightness control not working on Windows 10 is by updating the Display Adapter. Here’s how to do this manually:
- Open Device Manager from the Start Menu.
- Head to Display Adapters and click the arrow beside to expand the menu.
- Now right click on the available driver and choose to Update Driver.
- You’ll see a dialog box asking you to choose one option out of two.
- Select Automatically search for the updated driver software.
- Wait for the process to finish. Once done, restart your PC to apply changes.
Alternatively, we always recommend you to have an automatic Driver Updater installed on your PC so that you get timely updates of any outdated or corrupted drivers that need to be fixed. This will prevent you from such random errors. We suggest using Smart Driver Care, a robust driver updater utility for your Windows PC. It takes utmost care of your system drivers and lets you fix all the corrupted or outdated ones in a single click. Here’s how to use Smart Driver Care:
- Download and Install Smart Driver Care from the link below.
Click Here to Download Smart Driver Care
- Launch the application on your system.
- On the first screen, you’ll see a Scan
- Click on it and wait for the scan to finish.
- You’ll then see a list of corrupted and outdated drivers.
- Click on Update All to update all of them at once.
- Or you can choose any particular driver and click on Update Driver located beside it.
- Restart Your PC to apply changes.
Windows 10 Brightness Setting Not Working
Not only this, Smart Driver Care gives you the ability to backup and restore backed up drivers in case something happens accidentally.
To know more read the full review of Smart Driver Care
Method 2: Enable Adaptive Brightness
To enable Adaptive Brightness on Windows, follow these steps below:
- From the Start menu or Search box, open Control Panel.
- Navigate to Hardware and Sound.
- Click on Power Options.
- On the next screen, you’ll see Change plan settings highlighted in blue colour. Click on it.
- Then, click on Change advanced power settings.
- On the new window, click on Display to open further options.
- Change the available options to the desired settings.
- Click Apply and then OK.
Method 3: Enable PnP Monitor
If the last method doesn’t work, you can try enabling the PnP monitor. Here’s how to do this:
- Open the Run window by pressing Win+R key together. Now, type in devmgmt.msc to open the Device Manager on Windows.
- Click on Monitors and expand the menu.
- You’ll see a Generic PnP monitor. Right-click on it to check if it is enabled.
- If not, click on Enabled device. If it is enabled, disable it.
- Now, head to the Action tab at the top of the Device Manager.
- Then select Scan for hardware changes.
- Run the scan.
That’s all.
Brightness Setting Not Working In Windows
Method 4: Update the Registry
Last method in our guide to fix brightness not working on Windows is through Registry update.
Note: Please note that updating Registry involves serious changes to your PC. If not done correctly, serious problems may occur.
To continue updating the registry, follow the steps below:
- Open Run window using Win+R keys together. Type in regedit to open Registry Editor.
- Go to HKEY_LOCAL_MACHINE.
- Click System > ControlSet001 > Control.
- Now, Select Class{4d36e968-e325-11ce-bfc1-08002be10318}000.
- Then set FeatureTestControl DWORD’s value data to 0000ffff.
This should solve your problem of brightness not working.
Conclusion:
Although updating the display driver using either manual method or using Smart Driver Care will fix the error of brightness not working. If in case, this doesn’t fix, there are other ways listed in the article. You can try them out and let us know if you have any queries or suggestions.
Keep reading Tweak Library for more such content.
Recommended Readings: