The backlight of my computer turns off at a time that is not the same as what I set

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The backlight of my computer turns off at a time that is not the same as what I set

Problem

The user sets the backlight of the computer to turn off when there is no activity for 15 seconds. However, the backlight turns off at any time ranging from 1 second to several minutes after the user presses F3.

Cause

There is a compatibility issue between BIOS and the keyboard backlight.

Solution

Open PC Manager, go to Settings > System settings, then set your preferred time for the backlight to turn off when there is no activity.

Helpful or not?
Thanks for your feedback.