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The brightness of the screen on the laptop does not change. The brightness of the screen on the laptop is not adjusted, what should I do? How to adjust brightness. Are function keys active

Quite often on the forums they ask the question: Why doesn't the brightness control on my laptop work!? The problem is quite common, at first glance trifling, but in fact very unpleasant. Indeed, in this case, you will have to look either at an overly bright screen (which will instantly hurt your eyes and cause a headache), or at an almost dark one, where you can’t see anything. Today we will talk about the most common causes of the problem and what can be done to fix the problem of screen brightness not working on a laptop.

Why is the screen brightness not working?

We list the possible reasons why the brightness on the laptop is not adjusted.

Reason #1. Active keys enabled

If you have an HP (Hewlett Packard) laptop, the Active Keys feature is often activated by default, thanks to which the top row of laptop keys works without Fn, and to use the standard F1-F12 keys, on the contrary, you need to hold down Fn. Hence the advice: try pressing the F key, which is responsible for adjusting the brightness WITHOUT pressing Fn. If the adjustment worked without FN, you can disable the Active Keys Mode function in the BIOS:

There is a similar setting for Lenovo laptops. By the way, by default, there is also often a quick access mode for adjusting brightness, volume, and other functions (without pressing Fn).

By the way, in Windows 10 you can adjust the brightness if you click on the battery icon in the taskbar and click on the corresponding button:

Adjust screen brightness on a Windows 10 laptop

Reason number 2. Key driver missing

At the same time, an undefined device may not be in the Device Manager! The driver required for the operation of brightness, volume, and screen mode switching may be called power manager, keyboard driver, hot keys driver, or quick launch buttons. Go to the laptop manufacturer's website, find your model, exact modification, select the current operating system and look for such a button driver.

There are two nuances here:

First, about how to correctly search for a driver for the current laptop configuration using HP as an example. For the same model can have up to a dozen modifications by different hardware.

Secondly, if, having found your product on the manufacturer's website, you did not find the current installed Windows in the supported OS list, that's the problem. There may not be a driver for this OS at all. All you can advise here is to look for similar models from this year that support your version of Windows, and try installing the button driver (or Power Manager, Key driver) from it. Sometimes it is possible to pick up in this way.

How to get brightness control working on a laptop

Try to install Windows newer than the current one. For example, Windows 10 comes with a standard driver that can adjust the brightness on many laptops.

Therefore, here you just need to install the top ten, let it install all available updates and drivers and try how it will work with your hardware. For older models, you can try installing Windows 7.

After installation windows updates 8.1 on my Samsung 470R laptop, the ability to change the screen brightness is gone. When you press the Brightness Up button, the slider moves and the screen remains at the same brightness as when the computer was turned on. To put it mildly, it is not very convenient when the screen brightness does not change, besides, the energy-saving mode, based on reducing the screen brightness, also becomes inoperative.

What I did before upgrading Windows 8 to Windows 8.1 - updated all drivers and did backup important files, i.e. Followed the standard recommendations from Microsoft and Samsung.

To find a solution to the problem with the inability to change the screen brightness, I first updated all possible drivers again (Intel HD Graphics 4000 (https://downloadcenter.intel.com/SearchResult.aspx?lang=eng&ProductFamily=Graphics&ProductLine= Laptop+graphics+drivers&ProductProduct= 2nd+Generation+Intel%C2%AE+Core%E2%84%A2+ Processors+with+Intel%C2%AE+HD+Graphics+3000%2f2000), AMD Radeon HD 8750M (http://support.amd.com /en-us/download/desktop?os=Windows+7+-+64)), but the problem that it is impossible to change the screen brightness remains.

Then I suggested that there might be a problem just in the new drivers. I encountered a similar problem in the interaction between Samsung and Microsoft after the release of NetFramework 4.5, with which the synchronization program Samsung phone Kies refused to see connected devices (see).

To work with drivers manually (returning to the old version in automatic mode is not performed), I went to Computer Management (Device Manager) and saw 2 video adapters - AMD and Intel. AMD has been flagged indicating that it does not have a driver loaded. And Intel worked. Alert.

Double click on AMD Radeon HD 8750M, open device properties, see driver loading error message, go to Driver tab to see which driver is in use. Clicked the Update driver button and selected Browse my computer for driver software, then clicked the Let me pick from a list of device drivers on my computer button. computer).

In my case I used AMD driver Radeon HD8600/8700M no date. I decided to try to select the driver AMD Raden HD 8750M Version: 13.152.0.0. And about a miracle! This device started working. But not the brightness of the screen.

As already mentioned above, the Samsung 470R has two devices responsible for graphics output. Therefore, it remained to check what was happening with the Intel device Intel HD Graphics 4000.

Similar to working with AMD card, I went to the properties of the Intel HD Graphics 4000, double-clicking on the name in the device manager, went to the tab Driver (Driver) and clicked Update driver (Update driver), selected the item Browse my computer for driver software (Find a driver on my computer), then clicked on the button Let me pick from a list of device drivers on my computer (Allow me to select from a list of drivers on my computer).

Hello.

On laptops, a fairly common problem is the problem of screen brightness: it either does not adjust, then it changes on its own, then everything is too bright, then the colors are too weak. In general, directly "sore subject".

In this article, I will focus on one problem: the inability to adjust the brightness. Yes, it happens, I myself periodically encounter similar issues in my work. By the way, some neglect the monitor settings, but in vain: if the brightness is too low (or strong), the eyes begin to strain and get tired quickly (I already gave advice about this in this article:).

So where do you start solving the problem?

1. Brightness control: several ways.

Many users, having tried one way to adjust the brightness, make an unambiguous conclusion - it cannot be adjusted, something has “flew”, it needs to be repaired. Meanwhile, there are several ways to do this, besides once you set up the monitor - you can not touch it for quite a long time, and you will not even remember that one of the methods does not work for you ...

I propose to try several options, I will consider them below.

1) Function keys

The keyboard of almost every modern laptop has a . Usually they are located on the F1, F2, etc. keys. To activate them, just press the button. FN+F3 for example (depending on which button you have the brightness icon on. On DELL laptops, these are usually the F11, F12 buttons) .

function buttons: brightness adjustment.

If the screen brightness has not changed and nothing has appeared on the screen (no control) - move on ...

2) Taskbar (for Windows 8, 10)

In Windows 10, adjust the brightness very quickly if you click on the power icon in the taskbar, and then left-click on the rectangle with brightness: adjust its optimal value (see screenshot below).

3) Through the control panel

First you need to open the control panel at: Control Panel\All Control Panel Items\Power Options

4) Through the video card driver

The easiest way to open the video card driver settings is to right-click on the desktop and select graphics characteristics from the context menu (in general, it all depends on the specific driver, sometimes you can go to its settings only through control Panel windows) .

In the color settings, there are usually always items for setting parameters: saturation, contrast, gamma, brightness, etc. Actually, we find the desired parameter and change it to fit our requirements.

2. Are function buttons included?

A very common reason why a laptop does not work function buttons (Fn + F3, Fn + F11, etc.)- are BIOS settings. It is possible that they are simply disabled in the BIOS.

The choice of the section where to enter the BIOS depends on your manufacturer. Here (within the framework of this article) to give a universal recipe is unrealistic. For example, in HP laptops - check the System Configuration section: see if the Action Keys Mode item is enabled there (if not, set it to Enabled mode).

action keys mode. laptop BIOS HP.

In DELL laptops, the function buttons are configured in the section Advanced (extended): the item is called Function Key Behavior (two operating modes can be set: Function Key and Multimedia Key).

3. Lack of key drivers

It is possible that the function buttons (including those responsible for screen brightness) do not work due to lack of drivers.

Give generic driver name in this question (which you can download and everything will work) - it is forbidden (by the way, there are such on the network, I highly recommend not using it) ! Depending on the brand (manufacturer) of your laptop, the driver will be called differently, for example: in Samsung it is "Control Center", in HP - "HP Quick Launch Buttons", in Toshiba - Hotkey utility, in ASUS - "ATK Hotkey" .

If you can’t find a driver on the official website (or it’s not available for your Windows OS), you can use special utilities to search for drivers:

4. Incorrect video card drivers. Installing "old" working drivers

If everything worked as it should for you before, and after updating Windows (By the way, when updating, it is always, usually, a different video driver is installed) - everything started to work wrong (for example, the brightness adjustment slider runs across the screen, but the brightness does not change) - it makes sense to try to roll back the driver.

By the way, an important point: you must have old drivers with which everything worked well for you.

How to do it?

1) Go to control Panel Windows and find there device Manager. You open it.

Next, find the "Display adapters" tab in the list of devices and open it. Then right-click on your graphics card and select " Update Drivers...«.

Update driver in device manager

Then select " Search for drivers on this computer«.

By the way, it is possible that the old driver (especially if you just updated the old Windows version instead of reinstalling it) already on your PC. To find out - click the button at the bottom of the page: " Select a driver from the list already installed drivers » (see screenshot below).

Where to look for drivers. Catalog selection

Then just point to the old (different) driver and try using it. Very often, this solution helped me, because old drivers sometimes turn out to be better than new ones!

List of drivers

5. Windows OS update: 7 ->10.

By installing, say, Windwows 10 instead of Windows 7, you can get rid of problems with drivers for function buttons (especially if you can't find them) . The fact is that the new Windows OS has built-in standard drivers for the operation of function keys.

For example, the screenshot below shows how you can adjust the brightness.

However, I should note that these "built-in" drivers may be less functional than your "native" ones ( for example, some unique features may not be available, for example, auto-adjustment of contrast depending on ambient lighting).

By the way, you can read more about the choice of Windows OS in this note: (despite the fact that the article is already a bit old, it has good ideas :)).

If you have something to add on the topic of the article, thank you in advance for your comment on the article. Good luck!

Laptops often have problems. Some devices run out of battery quickly, making it impossible to work offline. In some cases, the user does not know why it is not possible to adjust the brightness on the laptop. Sometimes the problems are related to software failures. Brightness control is on all screens. In stationary PCs, it is easier to adjust it, since there are buttons on the monitor for this. In a laptop, you need to use special combinations or OS settings.

Why is the brightness on the laptop not adjustable

If you can't adjust the brightness, then most likely it's a system problem. The most common problems include:

video card drivers;
screen off;
lack of automatic updates;
processor driver;
software failures;
monitor driver.

How to find the reason

If it is impossible to change the brightness on a laptop, you need to take a closer look at the video card drivers. This is the most common reason. The problem appears due to the fact that:

driver not installed;
The software was removed by the operating system;
incorrect update;
The monitor is not active in Device Manager.

It's a similar story with graphics card chipset drivers. If it was installed software from a third party source or through automatic update sometimes not all functions work.

Some may not be displayed completely, so it is impossible to even see where the brightness is adjusted. In this situation, you need to download the required drivers from the manufacturer's website.

How to fix the problem

Most users, having tried one of the options for adjusting the brightness, think that it can no longer be adjusted, something is broken, and repairs are required. But there are many ways to do this, and once you set up the screen in the future, you can not touch the monitor for a long time.

Function buttons

On the keyboard of any laptop are function keys. As a rule, they are installed on the F1-12 buttons. To activate them, you need to press, for example, the combination FN + F3 (taking into account which key the icon is shown on).

If everything remains at the same level, and the adjustment scale does not appear on the monitor, you can consider the following methods.

Taskbar (Windows 8, 10)

In the top ten, adjustment is made very quickly if you click on the "Power" icon in the task menu. After the left mouse button on the brightness indicator, which needs to be adjusted to the required value.

Using the control panel

First you need to go to the "Control Panel", then select the menu "All items" and "Power". Then go to the "Setting the power scheme" tab.

Here, the sliders adjust the brightness of the screen from the battery and from the mains.

Using the graphics card driver

The fastest way to get to the graphics card settings is to right-click on the desktop and find the graphics settings from the list that appears (the location of the driver settings will depend on the specific software, in some cases you can only access the settings through Windows management).

In the color parameters, as a rule, there are different settings items: saturation, contrast, color gamut, brightness, etc. You need to find the required parameter and just change it.

Are function keys active

As a rule, the reason why the function keys do not work on a laptop is the BIOS settings. Probably they are simply not active in the BIOS.

The choice of the menu where to look for settings in BIOS will depend on the laptop model. For example, in HP devices, you need to check the System Configuration menu: here you need to see if the Action Keys mode is active (to activate, you need to set Enabled).

In DELL models, the keys can be configured in the Advanced menu - Function Key option.

No function button drivers

Probably, the function keys (in particular, which are responsible for the brightness of the monitor) do not work, due to the lack of software.

In this case, determining the universal name of the software (drivers that you can simply download and everything will start working) will not work (by the way, you can also find such on the Internet, it is highly not recommended to install them).

Taking into account the mobile PC model, the driver is called differently, for example: in HP - "Quick Buttons", in Samsung - "Control Center", in Asus - "Hotkey", in Toshiba - "Utility".

Incorrect graphics card software

If before that everything worked in normal mode, and when Windows was updated (during the update, another graphics card driver is most often installed) everything stopped working (for example, the brightness adjustment slider changes on the monitor, but everything remains the same), you can try to roll back installed update.

Also, the old working drivers should remain on the disk that came with the laptop, you can simply install them.

To do this, go to the Windows controls, then to the "Device Manager". Then look for the "Display Adapters" menu. Then right-click on the installed graphics card and then "Update Driver".

Now find the "Search for drivers on the computer" tab. Specify where the drivers are located.

Probably old software (especially if it was just updated Windows version, and the system was not reinstalled) is already on the computer. To determine this, click at the bottom of the window: "Find from the list of installed drivers."

Then select the old software and install it. Often this solution helps, as old software is sometimes much better than the updated one.

Windows 7 to 10 upgrade

By updating the seven to ten, you can solve the problem with the software for the function keys (especially if you can’t find it). Just in new operating system there is a standard software for the operation of "hot buttons".

But it should be noted that this "built-in" software may not be as functional as the "native" one (some modes may not work, for example, automatic contrast adjustment taking into account ambient lighting).

Hello.

So where do you start solving the problem?

1. Brightness control: several ways.

Many users, having tried one way to adjust the brightness, make an unambiguous conclusion - it cannot be adjusted, something has "flew", it needs to be repaired. Meanwhile, there are several ways to do this, besides once you set up the monitor - you can not touch it for quite a long time, and you will not even remember that one of the methods does not work for you ...

I propose to try several options, I will consider them below.

1) Function keys

On the keyboard of almost every modern laptop there are function buttons. Usually they are located on the F1, F2, etc. keys. To activate them, just press the button. FN+F3 for example (depending on which button you have the brightness icon on. On DELL laptops, these are usually the F11, F12 buttons).

function buttons: brightness adjustment.

If the screen brightness has not changed and nothing has appeared on the screen (no control) - go ahead ...

2) Taskbar (for Windows 8, 10)

In Windows 10, adjust the brightness very quickly if you click on the power icon in the taskbar, and then left-click on the rectangle with brightness: adjust its optimal value (see screenshot below).

3) Through the control panel

First you need to open the control panel at: Control Panel\All Control Panel Items\Power Options

4) Through the video card driver

2. Are function buttons included?

A very common reason why the function buttons (Fn + F3, Fn + F11, etc.) do not work on a laptop is the BIOS settings. It is possible that they are simply disabled in the BIOS.

action keys mode. HP laptop BIOS.

On DELL laptops, the function buttons are configured in the Advanced section: the item is called Function Key Behavior (two operating modes can be set: Function Key and Multimedia Key).

3. Lack of key drivers

It is possible that the function buttons (including those responsible for screen brightness) do not work due to lack of drivers.

Give generic driver name in this question (which you can download and everything will work)- it is forbidden (by the way, there are such on the network, I highly recommend not using it)! Depending on the brand (manufacturer) of your laptop, the driver will be called differently, for example: in Samsung it is "Control Center", in HP - "HP Quick Launch Buttons", in Toshiba - Hotkey utility, in ASUS - "ATK Hotkey" .

4. Incorrect video card drivers. Installing "old" working drivers

If everything worked as it should for you before, and after updating Windows (By the way, when updating, it is always, usually, a different video driver is installed)- everything started to work wrong (for example, the brightness adjustment slider runs across the screen, but the brightness does not change)- it makes sense to try to roll back the driver.

By the way, an important point: you must have old drivers with which everything worked well for you.

How to do it?

1) Go to the panel Windows controls and find the device manager there. You open it.

Update driver in device manager

Then select "Search for drivers on this computer".

By the way, it is possible that the old driver (especially if you just updated old version Windows instead of reinstalling it) already on your PC. To find out, click the button at the bottom of the page: "Select a driver from the list of already installed drivers" (see screenshot below).

Where to look for drivers. Catalog selection

Then just point to the old (different) driver and try using it. Very often, this solution helped me, because old drivers sometimes turn out to be better than new ones!

List of drivers

5. Windows OS update: 7 --->10.

By installing, say, Windwows 10 instead of Windows 7, you can get rid of problems with drivers for function buttons (especially if you can't find them). The fact is that the new Windows OS has built-in standard drivers for the operation of function keys.

For example, the screenshot below shows how you can adjust the brightness.

If you have something to add on the topic of the article, thank you in advance for your comment on the article. Good luck!