Hello, I can t adjust the brightness of my laptop, can you help me

Hello, it is recommended that you must install the original Windows operating system, do not use the Ghost version of the operating system, because this kind of operating system is mostly a streamlined system, the stability and compatibility are very poor, and generally do not have AHCI related drivers can not recognize the hard disk in AHCI mode. At the same time, be careful not to use driver management software to find the public driver, but should use the operating system CD that comes with the factory or go to the official website of Dell to install the corresponding hardware drivers, so that the stability of your operating system is very high.

At the same time, because the current computer configuration is relatively large memory, so chip manufacturers are also based on the development of drivers under the 64-bit operating system, it is recommended that you install the 64-bit operating system, because the installation of the 32-bit operating system can not find the relevant hardware drivers.

In addition, you are reminded to use domestic optimization software as little as possible to carry out the so-called "optimization" or "garbage cleaning", because it is easy to disable the startup operation of the driver or hypervisor or directly delete the driver by mistake and cause problems in the operation of the machine. In addition, the "boot optimization" claimed by this type of software will actually cause many drivers that should be loaded at boot to be disabled, resulting in problems with the related hardware.

Normally, you can adjust the brightness, if you can't adjust it, it is caused by a system problem, and the steps to solve the problem of adjusting the brightness of the notebook are as follows:

1. First open the start menu and click on the Select Command Prompt.

Administrator) menu item.

2. At this time, the command prompt window will be opened, enter the command powercfg l in the window, and then press the enter key.

You can turn it on and see the power scheme that is currently in use.

3. Next, right-click on the taskbar.

In the blank space, click on "Task Manager" in the pop-up menu.

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4. Then open the registry.

Locate 381b4222-f694-41f0-9685-ff5bb260df2e and click on aded5e82-b909-4619-9949-f5d71dac0bcb.

5. Next, right-click on the blank space of the right window, and click the "New DWORD (32-bit) Value" menu item in the pop-up menu.

6. Then a new interface appears, select the decimal base in the window.

Then modify the numerical data to 100 so that the laptop.

The brightness will be adjusted to 100.

After entering the system, it is impossible to adjust the brightness of the screen, and there are two possibilities for this situation:

The second is that the graphics card driver is not installed properly, resulting in the inability to adjust the brightness, just install it. To adjust the LCD brightness in the normal system, please press the FN+key combination or press the FN+key combination. If you press FN+ or FN+ and can't adjust the LCD brightness, please go to the official **** software.

Factors influencing screen brightness.

1.Personal vision.

For example, a dizzy user needs to adjust the screen a little brighter, and if the user has good eyesight, it does not need to be so bright.

2.Ambient brightness.

1) When the surrounding environment is dark, try to adjust the brightness to be darker, for example, in the environment with the lights off, there is no other light source, you need to turn the brightness down as much as possible, usually to about 40%. The best advice is to turn on the lights.

2) In a relatively bright environment, you need to adjust the screen to a higher brightness, because the surrounding environment is too bright, and the screen is too dark, you need more energy to see the content of the mobile phone screen, at this time, you can adjust the brightness to about 60% to 80%.

Summary. Hello dear kiss, Xiaoting <> for you

Method 1: Generally, you can use shortcut keys to adjust the screen brightness in the brain, and you can consult the hardware manufacturer for details. Method 2:

1. In the blank space of the win10 desktop, click the right mouse button, in the pop-up right-click menu, select "Display Settings" 2, and the "Adjust Brightness Level" of the page can adjust the display brightness. Method 3: There is a brightness adjustment tile in the notification center in the lower right corner of the computer desktop.

Method 4: Under the "Battery" logo in the lower right corner of the computer desktop, there is a Brightness Adjustment tile.

The brightness of the notebook cannot be adjusted, and the brightness adjustment function disappears, how to solve it?

Hello dear kiss, Xiaoting <> for you

Method 1: Generally, you can use shortcut keys to adjust the screen brightness in the brain, and you can consult the hardware manufacturer for details. Method 2:

1. In the blank space of the win10 desktop, click the right mouse button, in the pop-up right-click menu, select "Display Settings" 2, and the "Adjust Brightness Level" of the page can adjust the display brightness. Method 3: There is a brightness adjustment tile in the notification center in the lower right corner of the computer desktop.

Method 4: Under the "Battery" logo in the lower right corner of the computer desktop, there is a Brightness Adjustment tile.

1.Shortcuts: FN (Power Authority) + F2 (Weak), FN (Function Key) + F3 (Strong); Adjust the brightness of the screen, if the hotkeys don't work, it may be a problem with the graphics card driver, **Install the driver.

2.On the desktop, there is a power icon in the lower right corner of the taskbar (that is, a battery and plug icon), click to open the "Select Power Plan" interface. Click "High Performance", click "Adjust Screen Brightness", in the "Select Power Plan" interface, click "High Performance", click "Change Plan Settings" on the right, and use the mouse to pull the "Adjust Plan Brightness Slider" to adjust the brightness.