Then choose the option 'Let me pick from a list of drivers on my computer'.In the ensuing interface menu, choose Browse my computer for driver software.Right-click on the installed display drivers, and choose Update Driver Software from the context menu. Scroll down to the Display Adapters entry in the device list and expand the option.Go to Start Menu > Search and type 'Device Manager' and then launch the Device Manager app.I hope someone can help, because it's only problem with intel driver.
I've also tried to install the newest driver 15.40.7.427 but it doesn't helpĪfter made some research i've found this forum with the related topic (but with a different notebook version): I think that it can have a connection with the fact, the T450s officially only compatible with B140HAN01.3 (and mine is now 1.2). I think it just some driver issue, because as you see the laptop is compatible with the screen. It works in BIOS, work without driver (it doesn't overwrite the BIOS settings), but when i install the driver this feature disappear from windows and set it to maximum brightness automatically. When I install intel HD Graphics driver, the brightness control doesn't work anymore. This is the id of the screen: B140HAN01.2 I've updated my old HD+ AUO TN sreen to an FullHD AUO IPS screen.
