brightness control not working dell windows 7

#Brightness control not working dell windows 7 windows 10#

Expand the Display Adapters list, then right-click the available graphics adapter. Click the Search button, type Device Manager in the text field, and then click on the app from the results. Auto ALS and Input - The keyboard automatically illuminates in dim lighting conditions when the internal keyboard, touchpad, or pointstick are used. If there isn’t any physical damage, you can use our tips below to remedy the Dell XPS brightness not changing issue.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. Ensure that the Keyboard backlit option is enabled in the BIOS.For more information, see Dell Knowledge Base article Dell BIOS Updates. Auto Input Only - The keyboard illuminates when the internal keyboard, touchpad, or pointstick is used.Įnsure that the BIOS is updated to the latest version.To set the Ambient Light Sensor to Enable, perform the following steps:Ĭlick the + sign next to Video in the System Configuration menu. 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 is used.

In the search results listed, touch, or click Settings (App).

Disabled or Off - The keyboard illumination is off. Press and hold the Windows () key, and then press the q key.

On an older version of the BIOS, the options may be: The buttons on function key work showing the bar moving up and down, but this has no effect on the display brightness. Yesterday display brightness stopped working.

#Brightness control not working dell windows 7 windows 10#

When enabled, you can use the brightness level keys on the keyboard to set the brightness level. Hi - I bought a latitude 7400 about a month ago with windows 10 pro. Note: There may be another option listed under Keyboard Illumination in the System Configuration menu, Keyboard Backlight with AC.