ThinkPad L440 screen brightness

I recently updated my BIOS Lenovo drivers and software page and it seemed to have locked the brightness of my screen to the maximum setting. I tried restarting the computer and setting in the windows menu, but still within a framework. It's too light to use in dim situations now. Any help would be appreicated.

I have the same problem with my L540. It started with the BIOS update to version 1.65. Because I have not found a solution, I went back to BIOS version 1.64, where all the brightness options are there and are working properly.

I think that with the solution also works for the L440.

You can download older versions. When on the page with the new drivers for the L440 (http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS037283) go to BIOS driver 1.65, then choose "learn more." At the end of the next page, you will see all the old versions.

You can install the version 1.64, you should choose the Option "Secure RollBack prévention" in the BIOS: restart the computer. When you see the option "to interrupt normal startup, press enter", press ENTER. Once more, press ENTER. Press F1 to enter BIOS Setup utility. Click on 'Security'-> then "update Bios UEFI Option'-> then"set RollBack prevention. " Change this option to "disabled". Press F10 to save the configuration changes and exit.

After you restart Windows, you can install BIOS 1.64.

Another possibility is to wait for the next version of BIOS...

Tags: ThinkPad Notebooks

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