How to turn off the backlight on Satellite U400?

Hello. somehow, I can't disable the led backlight. the button at the top of the keyboard that is planned to do now turns off the volume.
I don't know what caused this problem, perhaps win7 upgrade.

Is it possible to turn off the backlight, in case the planned key does not work?
Thanks for help.
Concerning

As far as I know you can disable it using Toshiba HW setup utility.
On the desktop click Toshiba Assist (hopefully, you have preinstalled it on your laptop) > Optimize > Toshiba HW setup > check if the lighting of the tab is available.

If Yes use OFF option and confirm with apply.
This should help you.

You can also check the advanced settings of the BIOS. If I remember well this lighting option can be also turned off it.

Tags: Toshiba

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