Though we cannot guarantee the functionality of any drivers on any installed retail version of the operating system, if Windows 7 drivers are not available you can try using the available Windows Vista® drivers. All of the following drivers may not be available for all models and all versions of the Windows 7 operating system. Follow the installation instructions precisely as listed on each driver Web page, including restarting and shutting down the computer when required. follow the procedure below to resolve the issue. So according to the description above, we can just update the graphics driver with Driver Booster.Ģ Run it, and the program will start scanning automatically ģ After the scan, there will be a list of outdated drivers, you can update them all or the one you need Ĥ Restart your PC to check if the problem has been repaired.When the function keys, F5 and F6, which allow you to adjust the LCD brightness, do not work after upgrading to the Windows® 7 operating system. Common driver problems such as blue screen of death, network problems, no sound problems etc can be properly repaired with Driver Booster. Use Driver Booster, a great driver manage tool which helps to update and backup your drivers easily. 
To solve this problem effectively, we can try the following solutions.ġ Check your graphics card version in Device Manager, Win+R, input: devmgmt.msc Ģ Go to the official website of the graphics card vendor and find out a proper one This may be caused by the inefficiency of the graphics driver on your laptop, so you need to update or re-install it manually or through a driver tool. And the icon of the power in the right corner disappears. But we may find out sometimes that we cannot dim screen of our laptop when holding Fn key and the brightness key isn’t work. Generally, we'd like to adjust the brightness of the computer screen to help adapt different situation. How to dim screen of my laptop when holding Fn key with brightness key is not working
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