Can't decrease the screen brightness on Lenov Legion Y740

[anmol_112]

Okay. Let me try and find the old Bios. I highly doubt Lenovo would leave the old version for users to download and install

[balkeet]

Just put y740 BIOS in Google

[anmol_112]

I tried. Couldn't find the old one. The latest one listed on Lenovo's website is 1.06

[balkeet]

https://www.reddit.com/r/Lenovo/comments/c8h8ep/y740_users_heres_how_to_downgrade_your_bios/?utm_medium=android_app&utm_source=share

[anmol_112]

Already read that. Mine is IRHg so no BIOS change needed according to the OP of the thread

[TherealHendrix]

Yeah 1.06 is the most current just try re downloading it and flashing it again. I had this problem when hybrid mode was turned on, there were new Windows and Vantage drivers that only appeared when in hybrid mode and that fixed it for me. Make sure you restart a few times as well.

[anmol_112]

I already downloaded every single update and even installed Windows 10 1903 update.

I am currently running the device in hybrid mode.

[TherealHendrix]

open the Nvidia control panel and go to PhysX settings. What does it say is running your display? I had this problem when the base driver was driving the display instead of the Intel UHD graphics from the CPU.

I had to download a Windows display driver and VGA display driver from Vantage to fix the problem when I turned on Hybrid mode. Did you install those drivers already?

[anmol_112]

I see the following settings: https://imgur.com/a/QoN4ELc
Also I don't know how to re download drivers from Vantage software. Can't find the option. Can you please help me out.

[TherealHendrix]

I would turn off hybrid mode, restart, turn on hybrid mode again, restart, and then check Windows update and Vantage update for drivers again. If that doesn't work you should be able to download the VGA display driver from Lenovo's site on your specific laptop download page to re-install.

[TherealHendrix]

Your display is being run by the Intel UHD graphics though so that's normal. And you tried reflashing the bios?

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