![]() Check your Windows version an download the appropriate version.Step #1 – Search for “Lenovo IdeaPad P400 Intel video driver” ().Unfortunately, if you attempt to change the brightness, the screen will go dark and you will need to re-install this driver. You will need to downgrade the video driver. This solution is applicable to IdeaPad Z400 and Windows 10 Lenovo Ideapad P400 Brightness Control Not Working Remotely SOLUTION Brightness Control Windows 10 With Windows 8, you could have defaulted to Microsoft Display driver to fix this problem, but this solution is no longer available under W10 APPLICABILITY It is happening after updating to Windows 8.1. Spectrasonics keyscape keygen windows 10. Lenovo Ideapad P400 Brightness Control Not Working Windows 10 Lenovo Ideapad P400 Battery It is impossible to change the screen brightness with the hotkey (F11 and F12), or even with the slider in settings. I had the same issue on a Lenovo IdeaPad P400 and I had to install an older driver in order to make the screen. ![]() However, sometimes an older driver works better. Then just check every so often to see if there is a new driver and install that when it becomes available. The brightness level remained at the level I had set it, so that was good. After checking all drivers, uninstalling and reinstalling lenovo energy management, the problem still exists. On IdeaPad P400 touch, the screen brightness won't change, despite the graphic on the screen shows the meter goes up and down. Under certain scenarios, this results in screen going to the darkest setting and F11 or F12 keys will not change the screen brightness. Lenovo Ideapad P400 Brightness Control Not Working RemotelyĪs of January 2018=9, the problem still arises when an unsuspecting user attempts to control the screen brightness by using F11 (neg brightness) or F12 (positive brightness) with Windows 10 OS.
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