Table of Contents

How to change the brightness of the Windows 7 PC screen?

Open Control Panel and go to the “System and Security” section. Next, go to the “Power supply” section. In the left column, click on the link “Change battery power settings.” In the window that opens, you can increase or decrease the screen backlight using the slider.

How to reduce screen brightness on a Dell laptop?

To adjust the brightness of the LCD, hold down the FN key and press the Up Arrow button several times. to increase brightness. To decrease the brightness, hold down the FN key and press the Down Arrow button repeatedly.

How to make your computer screen brighter?

So, how to use the keys to make the monitor screen brighter on a laptop.

  • Among the function keys (F1-F12) there are two images of the sun.
  • To increase brightness press “Fn” “sun”.
  • And to decrease. “Fn” “sun.”.

How to increase screen brightness on Lenovo tablet?

How to Adjust Screen Brightness. Lenovo Tablet 2 A7-30HC

  • Click “Settings” on the home screen.
  • Tap Display.
  • Click Brightness.
  • Slide control panel to adjust screen brightness.

How to reduce screen brightness on Lenovo?

Press Fn Home (increase brightness) / End (decrease brightness). Press F6 (increase brightness) / F5 (decrease brightness). Go to https://support.lenovo.com/us/en/.

  • Select Define Your Product.
  • Select “Drivers & Software”.
  • Select “Automatic Updates” and see the updates.

How to make the screen brighter in Windows 10?

Change Windows 10 screen brightness in the Settings app

  • Open Windows Settings by pressing the Win I key combination or click on the gear icon in the Start menu
  • Go to System → Display
  • On the right, adjust the “Brightness Change” slider to set the desired screen backlight level.

How to increase screen brightness on Lenovo laptop?

Using keyboard shortcuts to increase brightness

The quickest way to increase the brightness is by using special keyboard shortcuts. These combinations may vary for different laptop models. In most cases, the brightness is changed by simultaneously pressing the Fn button and any of the F keys (F1-F10).

Brightness control on Apple devices

Apple laptops are renowned for their high build quality and thoughtful interface. but users sometimes have difficulties with them. Models from 2017 release are equipped with light sensors. this option can be enabled in “System settings”, “Monitors” menu. The option is called “Automatically adjust brightness” and is activated by checking the box. If your device is older, then the following methods will work:

increase, screen, brightness, lenovo, laptop

How to adjust the brightness of the screen on a laptop?

When changing a full-fledged PC to a laptop, many users are faced with the problem of insufficient brightness. And at first glance it is not clear how to fix it. there are no screen adjustment buttons on the laptop, as on the monitor. Today we will consider all the ways to correct the brightness on a laptop and bring it to the desired level.

Software settings

You can easily change the brightness of your Macbook display from the Apple menu if your laptop is running mac OS Catalina 10.15. To do this, go to the above-mentioned “System settings”. “Monitors” and move the slider to the desired level, and, if necessary, also the contrast.

Function Keys

Now let’s look at how the brightness of the screen on a laptop is adjusted using the function buttons available on each laptop. These buttons include the Fn key, which changes the functionality of the F1 to F12 row. It can usually be found at the bottom of the keyboard, next to the Start key. As for which buttons the parameter adjustment is programmed on, it is individual for each model. It is easy to find out by the icons drawn on them. To help, we offer a table:

Laptop brand Keyboard shortcuts for adjusting brightness
Asus FnF5, FnF6
Acer Fn →, Fn ←
HP Fn, Fn
Lenovo FnF11, FnF12

If in any way it is not possible to solve the problem of how to increase the brightness on a laptop, you may need the help of a specialist. The matter may be in the loop through which the matrix is ​​powered, or the matrix itself, and they need to be replaced. Our service guarantees high-quality laptop repairs in a short time.

Decrease or increase brightness on a Windows laptop

If your device model is not equipped with special light sensors and does not adjust the indicator on its own, then there are the following ways to adjust the parameter:

Control Panel

It is convenient to change the brightness of the screen on a laptop programmatically, through the settings. This allows for smooth changes in minimal steps for perfectly accurate results. Display Setting Instructions:

  • Open the “Start” menu, find the “Control Panel” item there. The easiest way to do this is using the search bar.
  • Open the “Power supply” section, find the menu component called “Power plan selection”.
  • Add or decrease brightness by moving the slider of the same name. this can be done with the mouse or left-right arrows on the keyboard.

There is an accelerated way to get to this section. through the “Windows Mobility Center”, which opens when you click on the battery icon on the taskbar. Other parameters are also adjusted there, such as the level of energy consumption and volume.

In the same place, in the power settings, you can determine whether the screen backlight will go out when there is insufficient charge in order to save energy for work. Access to the ability to set a certain level of charge, at which the display will become dimmer, or completely disable this option.

Driver settings

This method is more often used to correct the image on conventional monitors, but it is also suitable for a laptop, especially if the model works in conjunction with a discrete video card.

Video card manufacturers (NVidia, AMD, etc.) provide their own software. The proprietary program contains a large number of fine settings. For example, if you go to the “Nvidia Control Panel”, and then to the “Display” section, you can find an item called “Adjusting the color settings of the desktop”, and there add or subtract the desired parameter.

How to brighten the screen on a Lenovo laptop?

Press the Fn key, usually located in the lower left corner of your keyboard, to open the brightness adjustment window. While holding it, press the F (F5) button with the sun icon. You need a brightness setting. If you want to make the image on the screen a little lighter, then set a slightly higher value for the brightness.

How to adjust the screen brightness on an ASUS laptop?

The volume keys are functional. This means that you need to press the Fn key as well. For example, to increase the brightness of the screen on a Dell XPS laptop (photo below), hold down the Fn F12 key. To increase the brightness of the screen on an Asus laptop, you need to press the Fn F6 key.

How to use the buttons to increase the brightness on a laptop?

You need to hold down the Fn function button (located at the bottom of the keyboard near the left Ctrl, Win button), then press the up or right arrow keys to increase the brightness, down or left to decrease it. F1 to F12 can also be used in combination with Fn.

How to increase screen brightness on Lenovo tablet?

How to Adjust Screen Brightness. Lenovo Tablet 2 A7-30HC

  • Click “Settings” on the home screen.
  • Tap Display.
  • Click Brightness.
  • Slide control panel to adjust screen brightness.

How to turn up brightness on a Windows laptop

Many modern ultrabooks support adaptive brightness control, which automatically adjusts the backlight level depending on the ambient light. For this feature to work, your laptop must be equipped with a light sensor. However, not all new models have such a feature. and even more so, devices released several years ago do not support it.

Using the function keys

You can turn down the brightness on a laptop of almost any model using the buttons. This is a good and proven method that will probably work for you. As a rule, on the keyboard of laptops there is a function key Fn, by pressing which the functions of the F1. F12 series are changed.

The Fn button itself is usually located next to the “Start”, but the keys for adjusting the brightness can be on any buttons in the F1. F12 panel or on the arrows. they are easy to distinguish by the sign in the form of a sun. On our laptop, for example, you can make the screen darker or brighter using F6 and F7.

How to increase brightness on a laptop: ways for Windows and macOS

We tell you how to increase or decrease the brightness on a laptop, regardless of its system and manufacturer.

If you are accustomed to using a regular desktop computer, and then switched to a portable laptop, you may have a logical question. how to dim or increase the brightness of the screen on a laptop. In the case of a PC, everything is quite simple: just find the corresponding button on the external monitor and select the required display backlight level.

On laptops, this process works a little differently, but it’s also not difficult at all. We have collected the most popular and convenient ways to help add brightness on a laptop and will certainly work for your model.

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How to make the screen brighter on a laptop through settings

Adjusting the backlight using the buttons is, of course, convenient, but this setting is rather rough. the brightness changes in large steps, and it may be that as a result the screen will be either too bright or too dark. Finding the “golden mean” is easier through the system settings.

  • Open the “Start” menu and go to the “Control Panel” section. It can be found in the side menu or simply set in the search bar.
  • Here open the “Power supply” menu and click on the “Select a power plan” block. In it you will find the item “Screen brightness”.
  • Using the slider, you can adjust the brightness by dragging it with the mouse or using the arrows on the keyboard.

The same menu can be accessed in a shorter way, using the Windws taskbar. the bottom menu, which contains the “Start” menu. To do this, simply click on the battery icon and select the “Windows Mobility Center” section from the drop-down menu. As a rule, in it you can adjust not only the brightness, but also the sound and power consumption of the laptop.

Change the brightness of the laptop screen using the settings of the video card driver

This method is more suitable for adjusting the brightness of an external monitor on a PC, but it may work for some laptops. especially those with a discrete graphics card. For example, if your device uses Nvidia’s video process, the corresponding proprietary program will be available to you. To open it, just right-click in an empty area of ​​the screen and select “Nvidia Control Panel”.

How to increase the brightness of the monitor on a laptop

Everyone knows that it works poorly in poor lighting conditions. Therefore, it needs to be added. Let’s consider several options on how to increase screen brightness on a Samsung, acer, dell, HP, sony, asus laptop in Windows 7, 8, xp and vista operating systems.

It should be noted right away that there is a difference between XP and the rest. The developers began to look at the convenience of work starting from whist, including increasing the brightness of the screen. Earlier versions put more emphasis on stability.

But as for laptop models: Samsung, acer, dell, HP, sony or asus, the difference with the brightness settings (I mean increasing the brightness of the screen, there is practically no).

Let’s first consider the easiest and fastest way to increase the brightness on a laptop screen.

To do this, we will use the keyboard shortcut. The first FN (usually the inscription is blue and is located at the very bottom on the left side). The second F6. it is she who increases the screen brightness on laptops, while F5. decreases.

I will not say 100% that this will happen on all models of Samsung, acer, dell, HP, sony, asus, but if there are some changes, they will not be significant. For convenience, icons are drawn on the keys. Solid sun. darken the brightness, with a gap inside. add.

If for some reason you cannot increase the brightness on the screen of your laptop (Samsung, acer, dell, HP, sony, asus) using the above method, then open the control panel, find the “screen” option there and on the left side click the brightness setting.

Then at the very bottom you will see a slider (as in the picture below), move it to the right side, thereby increasing the brightness of your laptop screen.

There are cases when it may not be possible to increase the brightness of the screen. This is not about the software, but about the physical components of the laptop. For example, the monitor lighting lamp has burned out or the screen itself has sunk.

Although this happens quite rarely, it is possible. As for lighting lamps, they cost about 100, and the screen “sags” very rarely.

I am now writing on a laptop, which is 8 years old and have not yet noticed any deviations in the brightness of the screen, although it sometimes works for three days without turning off.

In general, the video card is responsible for the brightness of the screen. If you open its settings, then the brightness can also be increased. One more moment.

Everything is led (executed by commands) by drivers, therefore if something does not work on them you should look, it is possible to update.

So for example, if you have an ASUS laptop, then take a look at the ATK Hotkey utilities for the brightness, if they are not there, download and install.

This article, of course, describes only general (universal) ways to increase screen brightness on laptops Samsung, acer, dell, HP, sony, asus.

It goes without saying that you may have “individual” problems. Then write in the Комментарии и мнения владельцев. we will decide. Good luck.

On Windows 8

Adjusting the brightness of the screen on Windows 8 / 8.1 is done both using keyboard shortcuts and in the order inherited from Windows 10; it will be discussed in the next section.

“Power settings”

If a laptop or computer gives too much light and you want to turn down the brightness (or, conversely, you need to change the parameter upwards), and the owner of the device does not want to use the two methods presented above, you can try another one. Applying it is as easy as changing the scale of the screen; the main thing is to follow the given sequence of actions.

To set up an overly bright or dark screen on Windows 7, do the following:

  • Open the “Start” menu and select “Control Panel” on the right side of it.
  • In the window that opens, go to the “System and Security” section.
  • Or, if the display option is “Icons”, just “System”.
  • Select your mode and go to the “Power plan settings” button next to it.

Here, the user can, by moving the slider, select the optimal screen brightness option. the procedure is similar to that described above and does not need additional Комментарии и мнения владельцев.

Important: depending on the version of Windows, this method may not be available due to the absence of a slider bar in the “Power plan settings”. There is nothing wrong with that. the user has two other ways to change the brightness of the laptop monitor.

Function Keys

The fastest, which does not require a laptop user on Windows 7 (as well as 8, 8.1 and 10), absolutely no additional knowledge and skills, a way to decrease or increase the brightness of the monitor is to use special keys.

Important: buttons that allow you to change the brightness in one click are provided for all modern laptop models, and sometimes they are found on “stationary” keyboards. usually on “extended” ones that cost a little more than standard ones.

You can change the brightness of the monitor using the keys, depending on the settings of the machine, in two ways:

  • simultaneously holding down the Fn and F2 / F3, F7 / F8 or others buttons on which the corresponding icons are applied. they will be described below;
  • by pressing only the corresponding keys without using the “function”.

This is no more difficult than flipping the image on a laptop; So, if the computer screen is too light or, on the contrary, the brightness is low for normal operation, the user should:

  • To decrease the brightness. press the key with a smaller “sun”, “light” or other icon with a downward-facing arrow.
  • To add. use the neighboring, respectively, with a large “sun”.
  • You can make sure that the changes have taken effect both with the help of your own organs of vision, and by the indicator of the current brightness that appears on the screen.
  • It is important to remember that it will not work to make the brightness lower than the minimum or higher than the maximum specified by the manufacturer. the indicator scale will be empty or filled, and the user cannot change the factory settings using standard means.

On Windows 10

You can increase or decrease the brightness of the monitor using the function keys and the “Mobility Center”, as well as “Windows Settings” and the slightly modified and available in all versions of the utility “Power supply”.

How To Adjust Screen Brightness In Lenovo Ideapad 330s

To adjust the brightness in Windows Settings, you will need:

  • Open the “Start” menu and click on the “gear” located in the leftmost panel.

Lenovo Brightness Problem (FIXED)

  • By moving the slider in the “Display” section, select the optimal mode; no additional manipulations are required.

Tip: The user can automate the change in the brightness of the monitor in the evening and morning hours by moving the “Night light” slider to the “On” position and adjusting the time, hue and other monitor settings using the link below “Night light settings”.

On Windows 7

There are three simple ways to add or remove the brightness of the laptop screen on Windows 7; all of them are completely safe for the device and can be mastered literally within a couple of minutes. or even faster.

How to increase / decrease the screen brightness on a laptop?

The user of the operating system from Microsoft faces a lot of interesting tasks: find and install the best free antivirus for Windows 7, learn how to get rid of system junk, find a site with the most beautiful desktop wallpapers, and so on. One of the most pressing issues is figuring out how to increase or decrease the brightness of a laptop monitor. The simplest ways to adjust this parameter are described below.

Windows Mobility Center

A little more action will require a user who wants to decrease or increase the brightness of the laptop screen on Windows 7, the second method will be required, which is associated with launching a service utility.

To configure a monitor parameter without using the function keys, you should:

  • Open the “Start” menu by clicking the left mouse button on the checkbox located in the lower left corner.
  • And from here launch the Windows Mobility Center application.
  • In the window that opens, the user can, by moving the slider, adjust the brightness of the screen, and then proceed to further system settings. for example, free up space on the C drive.

Important: you can also find the “Windows Mobility Center” by entering the corresponding query in the search bar of the “Start” menu and selecting the very first item in the list of found.

Summing up

There are several ways to increase or decrease the brightness on a laptop running Windows 7, 8 / 8.1, or 10. The easiest is with the function keys. The rest involve working with system options: “Windows Settings”, “Mobility Center” or “Power Supply”.

How to change brightness on a lenovo laptop

Just two steps away from adjusting brightness on a Lenovo laptop.

Depending on your laptop model, locate the up and down arrow keys or the Home and End buttons. The key combination below the inscription of which there is a small image of the sun is correct.

Hold down the Fn function button located in the lower left part of the keyboard and, while holding it, press the buttons from item 1, thereby adjusting the screen brightness.

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Another setup method is using special software from the developer of the video card installed in the laptop. If the appropriate software is installed, right-click on the desktop and select “Graphics Specifications”. Further, by entering the color quality settings, you can change the brightness. Do not forget to click “OK” before exiting to save the new settings.

As you can see, adjusting the brightness of the display on Lenovo is extremely easy. Use this knowledge when the screen is not sufficiently lit, or its brightness is too high at night.

Just two steps away from adjusting brightness on a Lenovo laptop.

Depending on your laptop model, locate the up and down arrow keys or the Home and End buttons. The key combination below the inscription of which there is a small image of the sun is correct.

Hold down the Fn function button located in the lower left part of the keyboard and, while holding it, press the buttons from item 1, thereby adjusting the screen brightness.

Another setup method is using special software from the developer of the video card installed in the laptop. If the appropriate software is installed, right-click on the desktop and select “Graphics Specifications”. Further, by entering the color quality settings, you can change the brightness. Do not forget to click “OK” before exiting to save the new settings.

As you can see, adjusting the brightness of the display on Lenovo is extremely easy. Use this knowledge when the screen is not sufficiently lit, or its brightness is too high at night.

Most laptop manufacturers do not add assistive technology to adjust screen contrast. However, for tasks related to graphics and video, careful adjustment of brightness on a Lenovo laptop is essential to correctly reproduce colors and tints.

Adjusting the Brightness of Your Laptop Screen Lenovo provides the ability to adjust contrast using the video chip’s developer interface. often Intel or nVidia. If you have already installed the application software from the developer, it is enough to do the following:. right-click on the Desktop;. select the item “Graphic characteristics” in the menu;. you will see a control panel for graphics and media with ample opportunities;. go to the Display settings;. select the item “Color quality enhancement”.

Here you can adjust the contrast and gamma of the screen.

Your Lenovo laptop display supports a wide range of contrast settings. Based on the example picture in the specified application, select the options you need and click OK to save the settings.

Expanding the screen on a laptop and entering full screen mode

Almost all modern software for Windows is equipped with a graphical interface. When launched, it automatically selects the window resolution that is recommended for a particular laptop model. However, fans of video games, and ordinary users, are often faced with the need to change the standard scale of the monitor or even switch to full-screen mode. Consider how to increase the screen resolution on a laptop and make the picture size larger.

Using Magnifier

Windows has a built-in tool that allows you to zoom in on the entire screen or a specific part of it for a while. This is very convenient when reading any information written in small print. This feature is called Magnifier. To call it you need:

  • Log in on the laptop to the “Control Panel”.
  • Select the section “Accessibility”.
  • Go to the “Image Optimization” tab and check the box next to “Enable Magnifier”.
  • Configure the information display mode and the scale of the picture on the screen at your discretion.

Ways to change image parameters on a laptop

There are several ways to change the screen scale on a laptop:

  • increase (decrease) display resolution;
  • use the “Magnifier” function;
  • change the information display parameters in the settings of the required application.

Which option to use depends on how and where you want to increase the screen size on your laptop.

Change display resolution

If you need to make the screen resolution on a laptop larger, for example, for comfortable display of a picture in a video game, or return to the standard mode after a monitor settings crash or a driver malfunction, follow these steps:

  • Hover the cursor over a free part of the display and right-click or right-click on the TouchPad.
  • In the list that appears, click “Screen Resolution” or “Properties”, and then the required item. It all depends on the version of Windows installed on the laptop.
  • Use the slider to set the resolution that suits you for comfortable PC operation.

In the same section of settings, it is possible to stretch the desktop, increase the scale of the displayed text, change the screen orientation (expand or narrow it), etc.

If, after a system failure or exposure to malware, images and applications do not open in full screen, the problem may lie in the incorrect operation of the drivers for the video card. To bring the monitor’s functioning mode to normal and stretch the picture, you need to do the following:

  • Update drivers and download software to the video card installed on the laptop. You can find the required software on the disk that comes with the laptop, or download it from the official website of your PC manufacturer.
  • Launch the downloaded application and set the required resolution in the display settings. Here you can also select full screen mode, adjust monitor brightness, frequency and some other parameters.

Change application settings

The need to change the parameters of the picture often arises when surfing the Internet, because the small scale of some pages makes you strain your eyes, which makes your eyes get tired quickly. Fortunately, browser developers have provided the ability to change the size of the displayed information.

To stretch a page in the Yandex browser, you need:

  • Enter the settings of this application by clicking the corresponding icon located in the upper right corner.
  • Use the “” and “-” buttons to make the image wider or narrower to your liking.
  • If you need to set full screen mode, click the button in the form of two arrows.

In the Internet browsers Mozilla and Google Chrome, the scale and full screen mode are set in much the same way. When the mode of displaying information in full screen is activated, the upper and lower panels with all the tools disappear. To return the browser window to the standard form, press the F11 function key or the FunctionF11 key combination on the keyboard.

You can stretch a picture on a laptop in almost any application using the keyboard. To do this, hold down Ctrl “”. The same can be done using the TouchPad. It is enough to put two fingers on the touchpad and pull them slightly in different directions.

The brightness of the monitor is weak. How to increase the brightness of your laptop screen?

Hello.

The brightness of the monitor screen is one of the most important things when working at a computer that affects eye fatigue. The fact is that on a sunny day, as a rule, the picture on the monitor is faded and it is difficult to distinguish it if you do not add brightness. As a result, if the brightness of the monitor is weak, then you have to strain your eyes and your eyes get tired quickly (which is not good).

In this article, I want to focus on adjusting the brightness of the laptop monitor. This can be done in several ways, we will consider each of them.

An important point! The brightness of a laptop screen greatly affects the amount of energy consumed. If your laptop is running on a rechargeable battery, then turning up the brightness will drain the battery a little faster. An article on how to increase your laptop battery life: https://pcpro100.info/kak-uvelichit-vremya-rabotyi-noutbuka-ot-akkumulyatora/

How to increase the brightness of your laptop screen

1) Function keys

The easiest and quickest way to change the brightness of your monitor is to use the function keys on your keyboard. As a rule, you need to hold down the Fn function button arrow (or the F1-F12 range, depending on which button has a brightness icon. “sun”, see Fig. 1).

One small note. These buttons do not always work, the reasons for this are most often:

  • not installed drivers (for example, if you installed Windows 7, 8, 10. then by default drivers are installed on almost all devices that will be recognized by the OS. But these drivers work “not so”, including often the function keys do not work!) An article on how to update drivers in auto mode: https://pcpro100.info/obnovleniya-drayverov/
  • these keys can be disabled in the BIOS (although not all devices support this option, but this is possible). To enable them. enter the BIOS and change the corresponding parameters (article on how to enter the BIOS: https://pcpro100.info/kak-voyti-v-BIOS-klavishi-vhoda/).

2) Windows Control Panel

You can also change the brightness settings through the Windows Control Panel (the recommendations below are relevant for Windows 7, 8, 10).

First you need to go to the control panel and open the “Hardware and Sound” section (as in Fig. 2). Then open the section “Power supply”.

In the power supply section at the very bottom of the window there will be a “slider” for adjusting the brightness of the monitor. By moving it to the desired side, the monitor will change its brightness (in real time). You can also change the brightness settings by clicking on the link “Setting the power supply scheme”.

3) Adjusting the brightness and contrast settings in the drivers

You can adjust brightness, saturation, contrast and other parameters in the settings of your video card drivers (if, of course, they were installed ).

Most often, the required icon to enter their settings is located next to the clock (in the lower right corner, as in Fig. 4). Just open them and go to display settings.

By the way, there is another way to enter the graphics settings. Just click anywhere on the Windows desktop with the right mouse button and in the context menu that appears, there will be a link to the parameters you are looking for (as in Fig. 5). By the way, it doesn’t matter what video card you have: ATI, NVidia or Intel.

By the way, if you do not have such a link, you may not have installed drivers for your video card. I recommend checking the availability of drivers for all devices in a few clicks: https://pcpro100.info/obnovleniya-drayverov/

Actually, in the color settings, you can easily and quickly change the desired parameters: gamma, contrast, brightness, saturation, correct the desired colors, etc. (see fig. 6).

That’s all for me. Successful work and quick change of the “problem” parameters. Good Luck

General method for any laptops

We open the register. To do this, in the Windows search, type “regedit” and click on the Regedit program that appears.

On the left in the window, click once on the “Computer” section:

Now go to the “Edit” menu and select “Find”:

Enter EnableBrightnessControl into the search bar and click “Find Next”:

When the parameter is found, right-click on it and select “Delete”. Unfortunately, I don’t have this parameter anyway, so I can’t show it in the screenshot. But here, I think, everything is clear. Find and remove.

After deleting the parameter, you need to restart the computer and check the result.

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If suddenly nothing was found in the registry, then you do not have such a parameter and this method will not help, respectively.

If suddenly the registry does not look for a parameter due to the fact that it freezes (this happens), then the parameter can be found manually in the registry along the following path:

The last folder may also be called “0001”. You need to check both there and there.

And below are the methods that can help fix the problem in laptops of a particular brand.

Changed parameters in the Windows registry

There were cases when the brightness did not change in any way due to the fact that some registry settings in the Windows operating system have changed.

I offer some more ways to fix registry settings that can restore the ability to change the brightness of the laptop screen.

What to do if the brightness of the laptop screen does not change?

In my experience, I have encountered problems when the screen brightness does not change on the user’s computer (in 99% of these are laptops). Those. the brightness of the screen is either at the minimum and the screen is very dark, or at the maximum and it is not possible to reduce it. There can be many reasons for such a problem and, in fact, there are also a large number of solutions. Someone will suit one of the solutions, and someone else.

In this article, I offer you the main options for solving this problem, which helped me myself when the brightness did not change, and also, which helped some of my relatives, acquaintances, friends.

I note that this problem, when it is impossible to change the brightness of the screen, is encountered on different Windows operating systems, starting with the Windows 7 version and on different laptop models. Those. it is already clear that the problem is very extensive.

So, here are the 3 most common reasons due to which the brightness on a laptop may not change, and below I offer 3 solutions to them.

Method for Samsung laptops

Trying to find the featuretestcontrol parameter in the registry. How to search I described above.

When the parameter is found, open it by double-clicking on it with the mouse:

Write down somewhere what value you have in the “Value” field in the window that opens! May demand to return it back if the method does not help.

Replace the existing value with f908 and click OK:

Now restart your computer and check the result.

The parameter can also be found manually along the path that was indicated above. here.

Method for Lenovo laptops

Do everything the same as written about Samsung laptops, but set the parameter value to 0xf048.

Brightness is not changed with special hotkeys

If the brightness does not change with hot keys (for example, fnF5 or fnF6), but at the same time it can be changed in the power settings, then most likely your laptop does not have a special application installed that activates the operation of special hot keys specifically for your laptop model.

An example of hotkeys that switch brightness:

You can go to the power settings (right-click on the battery icon in the tray and select “Power”) and then open the “Windows Mobility Center”:

Try to move the brightness slider in this window. If it changes, then most likely it is just in the special hotkeys. But then, most likely, other special hot keys will not work for you, for example, to change the volume of the sound and turn it off, to turn on and off the wireless Wi-Fi network, to turn on / off the touchpad and other similar hot keys.

In this case, you need to go to the website of your laptop manufacturer and download from there a program designed to activate special hot keys for your model. I’ll show you using the Asus N76VJ laptop as an example. The manufacturer of this laptop is Asus, so you need to find the official website of this company.

To do this, in the search box and type “Asus” (1) and go to the official site (2). Official sites of companies, as a rule, are located on one of the first lines in search results, not counting the advertising line.

Going to the official site, you need to look for a section called “Service”, “Support” or something similar. For example, the Asus website has a Service section (1) and a Support subsection (2). In this case, you need to go there.

On the websites of different companies, the sections may be named differently, but the essence is the same.

It is in these sections that we can find all the programs and drivers for our laptop. There is usually a line to search for the desired programs by laptop model. Now we need a model. The laptop model (and indeed any computer) is indicated after the company name. For example, Asus N76VJ. The firm here, as already mentioned, is Asus, and the “N76VJ”.

Enter the model into the search box and click the search button:

In the search results under my laptop model I see the link “Driver Tools”. Click on it:

Also, this link (button) on sites may be called “Drivers and Utilities” or similar.

Now, from the list, select the Windows operating system that is installed on your computer:

If this is not in the list, then select either a newer one than yours or vice versa. It happens that programs fit from newer systems to older ones and vice versa.

In the list of sections that appears, open in this case “Utilities”:

Further, for this particular model in question, you need to download the “Keyboard Device Filter” and “ATKACPI driver and hotkey-related utilities” utilities. Downloading is done on this site using the “Global” button:

Please note that, firstly, I showed an example for an Asus laptop model. In your case (if you are looking for a program for a laptop of another company), the company’s website itself will visually differ, and therefore, the screenshots presented above can only give you a hint, give you a hint where to go / click approximately. In addition, the programs themselves differ for other brands / models of laptops. In this case, I recommend installing all utilities from the corresponding section and all drivers. This will help solve the problem if no program has been installed to work with special hotkeys. And you can always remove everything you have installed that is superfluous, this is not a problem.

Therefore, the above is only a tip, an algorithm, since all firms that produce laptops have their own official website, everywhere there is a support section from where you can download the necessary programs and drivers. The difference is only visual, the essence does not change.

Thus, having installed the necessary programs, you should earn special hotkeys for changing the screen brightness, as well as for work and other functions.

Incorrect or incorrectly installed video card driver

The second reason why the screen brightness may not work is the incorrectly installed driver for the built-in video card of the laptop. In this case, the brightness may not change not only with the help of special hot keys, but also through the corresponding sections of Windows. Perhaps the driver was simply installed with an error earlier, or it began to work incorrectly over time, for example, during Windows updates.

In this case, you first need to try to download the latest drivers for the video card (or both at once, if you have 2 video cards in your laptop) from the website of your laptop manufacturer and install them. Sometimes this solves the problem. The manufacturer’s website (company) can be found according to the same principle as described in the 1st paragraph above. And then also look for the help section where you can download drivers and programs for your laptop model, indicate the model and download the drivers.

The section with drivers for a video card may be called “VGA”, as in my example:

It can also be called “For a video card” or similar. VGA. this is how the section with drivers for video cards is usually abbreviated on sites.

If, after installing the drivers, the screen brightness began to change, then the reason was nevertheless precisely their incorrect operation.

For more information on what drivers are and how you can install them, see a separate series of articles, starting with the following:

If you do not know anything about the drivers, and you may not even be aware that some of them are simply not installed and because of this there are problems, then I recommend reading the article above and all subsequent ones.!

And here’s another option for drivers. It so happens that several different versions of drivers are installed on a computer, and the last of them works “crookedly”. In this case, you can try to choose a different version.

To do this, go to the device manager (search for Windows and enter “Device Manager” there), then open the video adapters section and double-click on the first video card in the list:

If you have 2 video cards, then we carry out all the described actions first with one, then with the other!

Next, go to the “Driver” tab and if the “Rollback” button is available, click it:

After rolling back the driver, restart the computer and check if the screen brightness has changed.

It is not available for me because only one version of the driver is installed. And in general, this button allows you to switch from a newer version of the driver to an older one. Sometimes this solves problems, including the problem of changing the brightness on the laptop screen.

If this does not help, then on the same tab, click the “Update” button:

In the new window, click “Search for drivers on this computer”:

Next, click “Select a driver from the list of already installed drivers”:

As a result, a list of drivers of different versions that have been installed on your computer will appear. In my case, only one driver is installed and there is nothing else to choose from:

But it often happens that some other driver versions were previously installed on the computer, and then you will see the entire list of previously installed driver versions in this window. You need to select from the list a driver of an older version than the one installed now, then click the “Next” button and install it. After that, restart your computer and check if the screen brightness change works.

If there are, for example, 3 or more driver versions in the list, then you can try everything in turn. After each installation, do not forget to restart your computer and check the result.

And, I remind you, if you have 2 video cards displayed in the list of devices, then try the above steps (point 2) for each of them!

BYRGPUB.COM 2021