The official version of Win10 was launched in just a few days, and tens of millions of computer enthusiasts have installed and upgraded Win10. Xiaobian also joined the first time to upgrade the camp. However, after upgrading Win10, the brightness of the small-sized laptop screen is very high, and it looks very glaring, but the brightness of the screen cannot be adjusted. By looking up the information, in some Win10 posts and forums, many Win10 users have encountered similar problems, and most of them have not found a solution. As a small fan of computer enthusiasts, I have been playing computer for many years. There are still some experiences in solving this type of problem. The following are two kinds of solutions that are more effective in small-scale research and testing. If you encounter similar problems, try it. Try it.
1, Win10 screen brightness can not adjust how?
Recently, many computer users upgrade Win10 have appeared the screen brightness can not be adjusted properly, and some screens are too bright and dazzling, but can not adjust the screen brightness Low; some are the screen brightness is too low, the screen looks at the eye. So what causes the Win10 screen brightness not to be adjusted, how to solve it?
First of all, because the screen brightness is not adjusted due to the upgrade or installation of Win10, it is obvious that the problem is in Win10 compatibility. aspect. The brightness of the Win10 screen can not be adjusted, most of which are caused by the following conditions:
1) The computer is equipped with dual graphics cards, that is, equipped with a separate graphics card, and the CPU also has a built-in core graphics card;
Since Intel Core i3/i5/i7 series The processor has a built-in core graphics card, and the Core i series processor has been released for several generations. Sometimes, due to the inconsistent driver version, the CPU core graphics card and the discrete graphics card will conflict, resulting in the screen brightness not being adjusted properly.
2) Win10 system installed with one-click Ghos tool;
3) Update the graphics card driver with tools such as Driver Wizard or Master Lu.
Because the one-button Ghost reinstallation system or the driver wizard has updated the graphics card driver, the graphics card version will change, and some brands of computer graphics cards can only use the driver that their brand has debugged, and the graphics card installed through Ghost and driver wizard. The driver, usually a generic version, causes the driver versions to be inconsistent, causing compatibility issues that can cause the screen brightness to be unadjustable.
Second, Win10 screen brightness can not be adjusted solution
If you encounter Win10 screen brightness can not be adjusted, how to solve it? The following is a few useful methods of computer Pepsi network Xiaobian pro test, I hope to help everyone .
Method 1: Modify the registry to solve the Win10 screen brightness can not be adjusted
1, first use the Win + R combination shortcut to open the Win10 run dialog box, and then open the input command: regedit, click on the following "ldld" OK & rdquo;, as shown below.
2, after opening the registry editor, expand the location: HKEY_LOCAL_MACHINESYSTEMControlSet001ControlClass{4d36e968-e325-11ce-bfc1-08002be10318}; then change the value of KMD_EnableBrightnessInterface2 in 0000 and 0001 to 0.
3. After the completion, restart the computer.
Note: If there is no 0001, only change 0000, and if you can't find the KMD_EnableBrightnessInterface2 registry key in these two items, you can create a new one, and the new type is REG_DWORD.
Some netizens successfully solved the problem that Win10 screen brightness could not be adjusted through the above methods, but the author still did not solve the problem through the above methods. The small series used the notebook, which was solved by the following method 2.
Method 2: Uninstall the graphics card driver
1, open the Win1O task manager, and then expand the "display adapter", you can see the current computer's dual graphics card, here we need to have these two compatibility The problematic graphics card drivers are all uninstalled. The specific method is to right-click on the name of the video card driver that needs to be downloaded, and then click “Uninstall”, as shown below.
2. In the pop-up confirmation uninstallation interface, be sure to check the “Delete the driver software for this device”, and then click “Delete” at the bottom to uninstall.
When Xiaobian unloaded the core graphics card and the discrete graphics driver built into the Win10 computer, it was found that the notebook screen could be adjusted, but this time it is the Windows basic display driver provided by Win10. If you want to install the laptop-compatible driver, you also need to download the driver according to the specific brand model of your notebook, and then install it.
How to find the graphics card driver corresponding to the brand model of the computer, you can look at a tutorial shared by Xiaobian before: [How to adjust the brightness of Lenovo Z500 screen Lenovo Z500 brightness can not adjust the solution].
If you think that it is very troublesome to find a brand driver, you can also try to uninstall the core graphics card, and only try to keep the discrete graphics card. Sometimes this method can also temporarily solve the problem that the screen cannot be adjusted. You can also set the screen brightness to the appropriate level, and then use the driver wizard to complete the graphics card driver installation again. Although the screen brightness cannot be adjusted after installation, at least the brightness is currently just adjusted.
Method 3: Other solutions
Because Win10 has just been released, compatibility is also understandable. If you can't adjust the brightness according to the above method, you can try to check the Windows update. Can fix the problem that Win10 screen brightness can not be adjusted.
There are many reasons for the brightness adjustment of Win10 screen, and it is more complicated. The above are two kinds of effective solutions recently discovered by Xiaobian. It is not guaranteed to be useful to every user, but for most users, there should be Help, welcome everyone to share, thank you.