lenovo ideapad p400 brightness control not working

Dell XPS 15 L501x :: Can't Adjust Brightness Of Screen Through Function Keys.

Dell XPS 15 :: Can't Adjust Screen Brightness Using Either Function Key Or In Control Panel.

Lenovo P/Y/Z Series :: IdeaPad Z710 - Dolby Home Theater V4 Doesn't Work After Windows 8.1 Upgrade.

Lenovo P/Y/Z Series :: IdeaPad Z500 - WiFi Connectivity (Limited Connection / Yellow Triangle).

HP 15-D009TU OS/Software :: Function Key To Adjust Brightness Not Working.

Lenovo P/Y/Z Series :: IdeaPad Z500 - Sound Stopped Working After Updated BIOS To 1.21.

Lenovo P/Y/Z Series :: IdeaPad Z500 - Cannot Control Luminosity Level After Updating Bios.

Lenovo P/Y/Z Series :: Change Special Keys Configuration - Z500 IdeaPad.

Lenovo P/Y/Z Series :: IdeaPad Z500 Won't Boot Up Without Power Cable Plugged In.

Lenovo P/Y/Z Series :: IdeaPad Z500 - Firmware Updated But Still Battery Not Charging.Lenovo P/Y/Z Series :: Z500 Really Dim On Maximum Brightness.Lenovo P/Y/Z Series :: IdeaPad Z500 HDD Clicking Sounds?.Lenovo X Series ThinkPad :: X240 / Windows 8 - Touch Screen Doesn't Function.Lenovo P/Y/Z Series :: USB Boot For IdeaPad Z500.Lenovo P/Y/Z Series :: Reversing Function Of All F Keys - Z500.Lenovo U/S Series :: S405 Windows 8 Cannot Adjust Brightness.Lenovo Z500 P/Y/Z Series :: Keyboard Doesn't Work Windows 8.1.Lenovo P/Y/Z Series :: IdeaPad Z510 Brightness Set To Zero When Turned On So Adjust It Manually All The Time On Ubuntu.Lenovo P/Y/Z Series :: IdeaPad Z500 Brightness Can't Increase.Lenovo P/Y/Z Series :: IdeaPad Z710 With Windows 8.1 - Cannot Adjust Brightness.Lenovo P/Y/Z Series :: IdeaPad Z500 - Screen Brightness Adjust Key Not Working.It seems that Windows 8.1 upgrade disables video drivers. I've solved my problem reinstalling the Intel video drivers, downloaded from Lenovo Driver Support.

Yesterday I've upgraded to OS Windows 8.1 and when I adjusted the screen brightness it goes off, and brightness adjust function doesn't works. I open this post to report a brightness problem on Lenovo Z500 Ideapad.

Lenovo P/Y/Z Series :: IdeaPad Z500 Brightness Adjust Function Doesn't Works - Windows 8.1 Oct 7, 2013

Lenovo ideapad p400 brightness control not working