While using a laptop, the user is faced with the need to adjust the backlight of the display. In the dark, it should not hit the eyes, but during the day, on the contrary, you need to add light in order to see something. Usually, adjusting the brightness of a laptop does not cause problems for users, but there are still some nuances here. This text will tell about it.
Regardless of who made the gadget, there are special buttons on the keyboard that will help increase or decrease the brightness on the laptop screen. Traditionally these buttons are combined with function keys Fto find the one you need, just look at the notation. The key that will help make the screen brighter is marked with an asterisk with a plus, and in order to remove it, you need to find another button next to it with an asterisk and a minus. Pluses and minuses can be replaced with an up/down arrow, but the buttons are always marked with an asterisk.
Sometimes these buttons are located not on the function, but aligned with arrows. In particular, Lenovo laptops require you to press Fn + up to make the backlight larger and Fn + down to make it smaller. Other manufacturers (Acer, HP, Asus) have these buttons on top. In any case, you need to find the designation, and it is always the same — an asterisk with a plus or minus.
Sometimes it happens that you cannot change the brightness of the screen with the keys. The brightness buttons may not work for the reason that the operating system was reinstalled on the laptop and not all drivers were installed. In this case, the assignment of additional keys on the device’s keyboard may change or not work at all. If the backlight does not change, then you can adjust the screen brightness directly through the operating system.
Adjustment in Windows
In order to adjust the brightness in the operating system, you must enter the display settings. For Windows 7 and 8, to do this, open the «Control Panel» in the «Start» menu and select «Display». Next, it remains to find the brightness slider, which by shifting can increase or decrease the brightness.
In Windows 10, you can go to the settings by clicking on tray notification icon. Here you need to select «All Settings», after that «System» — «Screen» and change the brightness settings by moving the slider.
On a note! An interesting feature of Windows 8 and 10 is the «night light» mode, which not only makes the screen dim so that it does not hurt the eyes, but also inverts all colors into a yellow tint. It is believed that it is he who, in the absence of lighting, is as safe as possible for the eyes. Smartphones have a similar function. The advantage of the mode is the ability to configure it so that it automatically turns on at a time specified by the user.
In older operating systems, Windows 7 and XP, there is a brightness adjustment on the laptop in the Windows Mobility Center menu. To find it, just press RMB in the tray and select the desired item. Several windows will open in which you can not only make the screen brighter or lower the backlight, but also select power options, sound volume, and perform other actions.
Another option to add brightness on a laptop is enter power settings. The slider to make the screen darker is located at the bottom. In the same menu, you can click on «Setting the power plan», the screen operation menu will open. Depending on whether it is connected to the network or not, below you can see the brightness adjustment on the laptop for both cases. That is, the user can set that if the gadget is disconnected from the network, the backlight will remain at 100% or decrease to 50% (any convenient option), and when the power is connected, the level should remain unchanged.
Important! You can add brightness through software that is installed on video cards from manufacturers — «Catalyst Center» for AMD and «Nvidia Control Panel» for GeForce.
Why is the brightness not adjustable
It happens that the user tries to reduce the brightness on the laptop, but it is not adjustable. If it does not change with the buttons, then you should check and update the keyboard driver. To make sure that this is the problem, you can try to adjust the sound with the keys.
The second option discussed above is to use the Windows tools. If adding brightness or making it smaller did not work and in this way, then the problem is video card driver. It will also need to be updated.
If the above remedies did not help, and the brightness adjustment still does not work, then the reason may be hardware problem is an unlikely event, but not impossible.
Advice! Before going to a service center, you should try to fix the problem by installing specialized software — Monitor plus or MyMonic. These are simple utilities that allow you to use only the mouse and not call up additional Windows settings. In them, not only the backlight is configured, but also other screen parameters — contrast and gamma.
If nothing was achieved with their help, then the problem is really of a hardware nature, and a trip to the service center is required.
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