当您在光线较暗的环境中工作时，您可以打开键盘上的背光功能。这可以帮助您轻松完成工作，但在某些情况下，该功能可能无法响应或工作异常。如果您的背光键盘无法(backlit keyboard is not working) 在Windows台式机或笔记本电脑上使用，请阅读这篇文章。
许多键盘都有背光键盘选项，其中背光在一天中的特定时间或周围环境黑暗时打开。这使用户即使在晚上也能工作。但是，有时背光键盘无法打开。
背光键盘在(Backlit)Windows 11/10中不起作用
如果您的 PC 上安装了 Windows 11/10，并且除背光键盘外所有热键都可以正常工作，您可以尝试以下方法。无需购买只点亮一个区域的USB蛇形灯。(USB)
- 检查您的键盘是否支持背光选项
- 检查是否有启用背光键盘的开关
- 调整亮度级别
- 检查背光超时设置
- 运行键盘疑难解答
- 更新键盘驱动程序
- 执行干净启动
- 进入 BIOS 设置实用程序
让我们详细介绍一下上述方法。
1]检查(Check)您的键盘是否支持背光选项
在购买键盘时，许多用户认为它必须具有背光系统，因为大多数现代键盘都有。然而，事实并非如此。即使使用高端的现代计算机，笔记本电脑也可能有也可能没有背光键盘。
因此，请与您的系统制造商一起解决这部分问题。但是，如果背光之前已在您的系统上工作过并且问题是最近才出现的，则继续执行以下解决方案。
2]检查(Check)是否有启用背光键盘的开关
许多笔记本电脑都有一个系统，其中背光键盘需要使用组合键来启动。检查是否可以使用按键打开或关闭键盘灯(turn the keyboard lights on or off using the keys)。
键盘背光具有三种模式：关(Off)、低(Low)、高(High)。
在某些键盘中，组合是Fn+F4。在某些情况下，它是Fn+F5。在某些笔记本电脑上，要打开或关闭背光，您必须按键盘上的Fn + Spacebar。请(Please)与您的系统制造商确认组合。
3]调整亮度级别
如果背光功能不起作用，您可能已将亮度设置为极低的水平。要调整背光的亮度，请连续按带有背光图标的键 2 或 3 次。键盘背光变暗和变亮。您可能需要同时按 Fn（功能）键来激活背光键。
如果您使用的是Lenovo计算机或 PC，请打开Lenovo Vantage。对于Windows 10，Lenovo Settings已替换为Lenovo Vantage。它提供了一个易于使用的界面和一个易于使用的界面，以个性化您的设置、运行设备诊断等。
打开联想华帝。
在主页的左侧面板中，查找键盘背光图标。
找到后，点击或单击以更改它。
4]检查背光超时设置
如果背光仅持续几秒钟，则可能需要在BIOS中配置(BIOS)背光超时设置( backlight timeout settings)。
5]运行键盘疑难解答
键盘疑难解答(Keyboard troubleshooter)是诊断与键盘相关的问题并在可能的情况下解决问题的出色工具。运行键盘(Keyboard)疑难解答的过程如下：
- 右键单击开始(Start)按钮，然后从菜单中选择设置。(Settings)
- 在“设置”(Settings)窗口中，转到左侧窗格中的“系统”选项卡。(System)
- 在右窗格中，向下滚动并选择疑难解答(Troubleshoot)。
- 在疑难解答(Troubleshoot)窗口中，选择其他疑难解答( Other troubleshooters)。
- 向下滚动到键盘疑难解答(Keyboard troubleshooter)，然后单击与其对应的运行。(Run)
键盘(Keyboard)疑难解答程序将诊断背光键盘的问题，并在可能的情况下解决这些问题。
6]更新键盘驱动程序
如果您的键盘是基于传感器的并且驱动程序已过时，它可能无法工作，因为它无法检测到灯何时熄灭。在这种情况下，您可以使用英特尔驱动程序和支持助手(the Intel Driver and Support Assistant)来更新系统的驱动程序。
7]执行干净启动
如果第三方软件导致您的键盘出现问题，隔离此原因的最佳方法是在您的系统上执行干净启动。(Clean Boot)这样一来，任何影响键盘的第三方程序都不会在启动时自动启动。稍后，您可以通过点击和试用来隔离软件。
8]进入BIOS设置实用程序
首先，确保计算机具有最新的系统设置(Setup)( BIOS ) 并且配置正确。
- 进入(Enter)BIOS设置或BIOS设置实用程序(BIOS Setup Utility)
- 使用箭头键导航到系统配置(System Configuration)选项卡。
- 在它下面，找到Action Keys Mode。如果尚未启用，请确保启用此模式。
在某些BIOS中，您会在(BIOS)System Configuration > Click Keyboard Illumination下的某处看到它。选项可能是：
- 禁用或关闭(Off)– 键盘照明关闭。
- Dim – 键盘照明为一半亮度。
- 明亮(Bright)– 键盘照明处于全亮状态。
您可能还想确保您的BIOS 已更新(BIOS is updated)到最新版本。
如何检查您的计算机是否有背光键盘？
这可以通过实际查看您的键盘或联系您的卖家来确认。原因是即使是最现代的高端笔记本电脑中的键盘也可能没有背光键盘。这通常发生在将其他功能调整到设计中。
键盘上的Fn键有什么用？
Fn 键用于使用F1 到 F12 键(F1 to F12 keys)的附加功能。这些功能的输出可能因计算机的品牌而异。虽然这个键在早期版本的键盘中并不常见，但它是现在的常态。
希望这可以帮助。
Backlit keyboard not working or turning on in Windows 11/10
When you are working in low-light environments you can turn on the backlit function on the keyboard. This helps you get your wоrk done comfortably but, on a few occasions, the function may faіl to respоnd or work weirdly. If уour backlit keyboard is not working on your Windows desktop or laptop, please read this post.
Many keyboards have an option of a backlit keyboard where a backlight switches ON after a certain time of the day or when the surroundings are dark. This allows the user to work even at night. However, at times the backlit keyboard doesn’t turn ON.
Backlit keyboard not working in Windows 11/10
If you have Windows 11/10 installed on your PC and all your hotkeys work fine except the backlit keyboard, you can try the following methods. There’s no need to buy a USB snake light that lights up only one area.
- Check if your keyboard supports the backlight option
- Check if there’s a switch to enable the backlit keyboard
- Adjust the brightness level
- Check Backlit timeout settings
- Run the Keyboard troubleshooter
- Update Keyboard drivers
- Perform Clean Boot
- Enter BIOS Setup Utility
Let’s cover the above methods in a bit of detail.
1] Check if your keyboard supports the backlight option
While buying a keyboard, many users assume it must have a backlight system since most modern keyboards do. However, that isn’t the case. Even with high-end modern computers, the laptop may or may not have a backlit keyboard.
So, please sort this part out with your system manufacturer. However, if the backlight has worked with your system previously and the issue is recent, then proceed with the following solutions.
2] Check if there’s a switch to enable the backlit keyboard
A lot of laptops have a system in which the backlit keyboard needs to be fired up using a combination of keys. Check if you can turn the keyboard lights on or off using the keys.
The keyboard backlight has three modes: Off, Low, High.
In some keyboards, the combination is Fn+F4. In some it is Fn+F5. On some laptops, to turn on or off the backlight, you have to press Fn + Spacebar on the keyboard. Please confirm the combination with your system manufacturer.
3] Adjust the Brightness level
If the backlit function is not working, chances are you might have set the brightness to an extremely low level. To adjust the brightness of the backlight, press the key with the backlight icon two or three times in a row. The keyboard backlight dims and brightens. You might need to press the Fn (function) key at the same time to activate the backlight key.
If you are using a Lenovo computer or PC, open Lenovo Vantage. For Windows 10, Lenovo Settings has been replaced with Lenovo Vantage. It offers an easy-to-use interface to one easy-to-use interface to Personalize your settings, run device diagnostics, and more.
Open Lenovo Vantage.
From the left panel of the homepage, look for the keyboard backlight icon.
When found, tap or click to change it.
4] Check Backlit timeout settings
If the backlight stays on for only a few seconds, the backlight timeout settings might need configuring in the BIOS.
5] Run the Keyboard troubleshooter
The Keyboard troubleshooter is an excellent tool to diagnose issues related to the keyboard and resolve them if possible. The procedure to run the Keyboard troubleshooter is as follows:
- Right-click on the Start button and select Settings from the menu.
- In the Settings window, go to the System tab in the left pane.
- In the right pane, scroll down and select Troubleshoot.
- In the Troubleshoot window, select Other troubleshooters.
- Scroll down to the Keyboard troubleshooter and click on Run corresponding to it.
The Keyboard troubleshooter will diagnose problems with the backlit keyboard and resolve them if possible.
6] Update Keyboard drivers
In case your keyboard is sensor-based and the drivers are obsolete, it might not work since it wouldn’t be able to detect when the light goes off. In such a case, you could use the Intel Driver and Support Assistant to update the system’s drivers.
7] Perform Clean Boot
In case a third-party software is causing the problem with your keyboard, the best way to isolate this cause would be to perform a Clean Boot on your system. By doing so, any third-party program influencing the keyboard would not launch automatically at startup. Later, you can isolate the software through hit and trial.
8] Enter the BIOS set up utility
Firstly, make sure the computer has the latest System Setup (BIOS) and is configured correctly.
- Enter the BIOS setup or BIOS Setup Utility
- Use the arrow keys to navigate to the System Configuration tab.
- Under it, locate Action Keys Mode. Make sure to enable this mode if it is not enabled already.
On some BIOS, you will see it somewhere under System Configuration > Click Keyboard Illumination. The options may be:
- Disabled or Off – The keyboard illumination is off.
- Dim – The keyboard illumination is at half brightness.
- Bright – The keyboard illumination is at full brightness.
You might want to also make sure that your BIOS is updated to the latest version.
How to check if your computer has a backlit keyboard?
This can be confirmed by looking at your keyboard physically or by contacting your seller. The reason is that even keyboards in the most modern high-end laptops might not have a backlit keyboard. This usually happens to adjust other features into the design.
What is the use of the Fn key in the keyboard?
The Fn key is used to use the additional functions with the F1 to F12 keys. The output of these functions can vary depending on the brand of the computer. While this key wasn’t as common in earlier versions of keyboards, it is the norm as of now.
Hope this helps.
