To set the Ambient Light Sensor to Enable, perform the following steps: When using this setting, the Ambient Light Sensor has to be set to Enable in the BIOS. Auto ALS and Input - The keyboard automatically illuminates in dim lighting conditions when the internal keyboard, touchpad, or pointstick are used.Keyboard Backlight with AC - When enabled, you can use the brightness level keys on the keyboard to set the brightness level.Keyboard Backlight Timeout on Battery - Allows you to set how long the backlight stays on while on battery power.Keyboard Backlight Timeout on AC - Allows you to set how long the backlight stays on while on AC power.Note: Other options listed under Keyboard Illumination in the System Configuration menu may include: Immediately start pressing the F2 key once per second (if the computer boots into Windows, shut down the computer and try again).Ĭlick the + sign next to System Configuration. With the computer powered off, press the power button. Make sure the Keyboard backlit option is enabled in the BIOS.For more information, refer to Dell Knowledge base article What is BIOS and How to Download and Install the latest BIOS? Make sure the BIOS is updated to the latest version. Auto Input Only - The keyboard illuminates when the internal keyboard, touchpad, or pointstick is used.To set the Ambient Light Sensor to Enable, perform the following steps:Ĭlick the + sign next to Video in the System Configuration menu. Auto ALS and Input - The keyboard automatically illuminates in dim lighting conditions when the internal keyboard, touchpad, or pointstick is used.

Disabled or Off - The keyboard illumination is off.On an older version of the BIOS, the options may be: When enabled, you can use the brightness level keys on the keyboard to set the brightness level. Note: There may be another option listed under Keyboard Illumination in the System Configuration menu, Keyboard Backlight with AC.

Deverouiller clavier windows 10