Can't adjust screen brightness on laptop

Why can’t the brightness of Lenovo laptop be adjusted?

1. Taking the Lenovo laptop ThinkBook14 and Win10 system as an example, the reasons and solutions for the brightness adjustment failure of Lenovo laptop : It may be that the computer is set to "night mode". Generally, the brightness of the computer cannot be adjusted at will in night mode. Solution: Turn off the computer's "night mode" function.

2. The notebook brightness cannot be adjusted. It may be that the driver for the special function keys is not installed, or the driver is damaged.

3. Check the relevant shortcut keys or touchpad settings. It may be that these settings have changed, causing the brightness to be unable to be adjusted. Manually adjust the monitor's brightness settings. If you cannot adjust the brightness directly in the operating system, you can enter the monitor's menu to adjust it.

Why can’t the laptop screen brightness be adjusted?

1. Check the hardware problem: If all methods have been tried, but the brightness still cannot be adjusted, it may be caused by hardware problems. You can try contacting the computer manufacturer or repair center to resolve the issue. I hope these methods can help you solve the problem of unable to adjust the brightness of your laptop.

2. You cannot adjust the brightness of the screen after entering the system. There are two possibilities for this situation. One is that you need to install a software. Find the hotkey driver software in the software download section of the official website and install it. Use key combinations to adjust screen brightness normally.

3. The above situation occurs because after the system upgrade, the original notebook power management program is not suitable for the new system. However, many notebooks must install this program to adjust the brightness, and it must match the brand and system. Just fine. The solution is to download and install it from the official website.

4. There are two main reasons. One is because of the problem of Intel's i-series CPU integrated graphics driver, especially the core graphics driver of the first generation CPU. The second reason is that there is an error in the brightness value of the computer.

The brightness of the laptop cannot be adjusted

1. If the brightness of the laptop cannot be adjusted, you can try the following methods: Check the power supply and battery: If there is no problem with the power supply and battery of the laptop, you can jump Go through this step. If your laptop's battery is low, the computer may limit brightness.

2. You cannot adjust the brightness of the screen after entering the system. There are two possibilities for this situation. One is that you need to install a software. Find the hotkey driver software in the software download section of the official website and install it. Use key combinations to adjust screen brightness normally.

3. The above situation occurs because after the system upgrade, the original notebook power management program is not suitable for the new system. However, many notebooks must install this program to adjust the brightness, and it must match the brand and system. Just fine. The solution is to download and install it from the official website.

4. Check whether the computer is powered on and whether the computer's power light is on. It may be due to the power management policy. If it is an extended screen, please check whether the monitor is powered on and whether the monitor's power light is on.

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