一些Windows 11/10用户报告他们的屏幕亮度^{(screen brightness)}会自动更改或无法正常工作。他们无法调节亮度。如果Windows 11/10 亮度^(Brightness)滑块无法正常工作或在您的计算机系统上自动更改，那么这篇文章将帮助您解决问题并解决问题。

Windows 11/10亮度控制^{(Brightness Control)}不起作用

请^(Please)浏览整个列表，然后决定您想尝试哪些建议，并决定您想尝试它们的顺序。

1. 更新您的图形驱动程序
2. 恢复电源^(Power)计划的默认设置
3. 禁用自适应亮度
4. 禁用英特尔节能技术^{(Intel Power Saving Technology)}
5. 禁用亮度重置任务
6. 运行电源疑难解答。
7. 使用 POWERCFG 工具。

1]更新您的图形驱动程序

首先^(First)，访问制造商的网站并为您的型号更新视频和图形驱动程序^{(update your video and graphics drivers)}。

2]恢复^(Restore)电源^(Power)计划的默认设置

打开Control Panel > All Control Panel Items > Power Options > Edit Plan Settings并通过单击恢复此计划的默认设置来^{(Restore default settings for this plan)}恢复默认电源计划设置。为您的所有电源计划执行此操作。

3]禁用自适应亮度

禁用自适应亮度^{(Adaptive Brightness)}并查看。打开Control Panel > Power Options。打开您的活动电源计划并选择更改^(Change)计划设置选项以打开编辑计划设置^{(Edit Plan Settings)}窗口。现在单击更改^(Change)高级电源设置选项以打开电源选项^{(Power Options)}对话框。接下来，展开显示^(Display)，然后展开启用自适应亮度^{(Enable Adaptive Brightness)}。将其设置为关闭。

4]禁用^(Disable)英特尔省电技术^{(Intel Power Saving Technology)}

如果您的笔记本电脑使用Intel处理器，请禁用Intel Power Saving Technology。您将在Dell或Vaio 控制中心^{(Vaio Control Center)}获得此设置。更多关于此计算机屏幕亮度闪烁^{(Computer screen brightness flickering)}帖子的信息。

5]禁用亮度重置任务

使用开始搜索^{(Start Search)}打开任务计划程序^{(Task Scheduler)}。在左窗格中，您将看到任务计划程序库^{(Task Scheduler Library)}。导航^(Navigate)到Microsoft > Windows > Display > Brightness。

在右侧窗格中，如果您看到一个名为BrightnessReset的计划任务，请双击它> Properties > Triggers选项卡> Edit。现在禁用它^{(disable it)}，看看它是否适合你。

如果它没有帮助，您可以重新启用它。

阅读^(Read)：Windows 11 中没有亮度滑块。

6]运行电源故障排除程序

运行内置的电源故障排除^{(Power Troubleshooter)}程序，看看它对您有帮助。您可以通过Windows 疑难解答设置页面访问它或直接运行以下命令以调出内置的电源疑难解答^{(Power Troubleshooter)}

msdt.exe /id PowerDiagnostic

点击 Enter 后，您将看到Power Troubleshooter弹出窗口。同样，如果您知道任何Troubleshooter的^{(Troubleshooter)}诊断包 ID^{(Diagnostic Pack ID)}，您将能够使用命令行调用它。

7]使用POWERCFG工具

如果您需要进一步排除电源计划^{(Power Plans)}的故障，请使用内置的PowerCFG 命令行工具。

All the best!

提示^(TIP)：Windows监视器亮度滑块^{(Monitor Brightness Slider)}可让您将亮度滑块添加到 Windows^{(add a Brightness Slider to Windows)}。

Windows Brightness Control not working or changes automatically

Some Windows 11/10 users have reported that their screen brightness changes automatically or does not work properly. They can’t adjust the brightness. If Windows 11/10 Brightness slider is not working or changes automatically on your computer system, then this post will help you troubleshoot & fix the problem.

Windows 11/10 Brightness Control not working

Please go through the entire list and then decide which of the suggestions you would like to try and decide the order you want to try them.

1. Update your Graphics driver
2. Restore default settings for the Power Plan
3. Disable Adaptive Brightness
4. Disable the Intel Power Saving Technology
5. Disable BrightnessReset Task
6. Run Power Troubleshooter.
7. Use the POWERCFG Tool.

1] Update your Graphics driver

First of all, visit the manufacturer’s website and update your video and graphics drivers, for your model.

2] Restore default settings for the Power Plan

Open Control Panel > All Control Panel Items > Power Options > Edit Plan Settings and restore the default power plan settings by clicking on Restore default settings for this plan. Do this for all your Power Plans.

3]  Disable Adaptive Brightness

Disable Adaptive Brightness and see. Open Control Panel > Power Options. Open your active power plan and select Change plan settings option to open the Edit Plan Settings window. Now click Change advanced power settings option to open the Power Options dialog. Next, expand Display and then expand Enable Adaptive Brightness. Set it to Off.

4] Disable the Intel Power Saving Technology

If your laptop used Intel processors, disable the Intel Power Saving Technology. You will get this setting in your Dell or Vaio Control Center. More on this at this Computer screen brightness flickering post.

5] Disable BrightnessReset Task

Open Task Scheduler using Start Search. In the left pane, you will see Task Scheduler Library. Navigate to Microsoft > Windows > Display > Brightness.

In the right pane, if you see a scheduled task called BrightnessReset, double-click on it > Properties > Triggers tab > Edit. Now disable it and see if it works for you.

If it does not help, you may re-enable it.

Read: No Brightness slider in Windows 11.

6] Run Power Troubleshooter

Run the built-in Power Troubleshooter and see it helps you. You may access it via the Windows Troubleshooters Settings Page or run the following command directly to bring up the built-in Power Troubleshooter

msdt.exe /id PowerDiagnostic

Once you hit Enter, you will see the Power Troubleshooter pop-up. Similarly, if you know the Diagnostic Pack ID of any Troubleshooter, you will be able to invoke it using the command line.

7] Use POWERCFG Tool

If you need to further troubleshoot Power Plans, use the built-in PowerCFG command-line tool.

All the best!

TIP: Windows Monitor Brightness Slider lets you add a Brightness Slider to Windows.

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