To change the timeout for the backlit keyboard on your Dell laptop, you can follow these steps:
Open the Dell Keyboard Backlight Settings utility. This can usually be found in the Control Panel or in the System Tray.
Select the "Keyboard Backlight Settings" tab.
Change the timeout setting to the desired duration. You can choose a setting ranging from 30 seconds to 30 minutes, or you can disable the timeout altogether.
Click "Apply" to save the changes.
If the above steps do not work, you may need to check the BIOS settings. To do this, follow these steps:
Restart your laptop and press the appropriate key to enter the BIOS setup. This key is usually F2 or Del, but it may vary depending on your laptop model.
Navigate to the "System Configuration" or "System Settings" tab.
Look for a setting related to the backlit keyboard timeout.
Change the timeout setting to the desired duration. You can choose a setting ranging from 30 seconds to 30 minutes, or you can disable the timeout altogether.
Save the changes and exit the BIOS setup.
If you are unable to find the timeout setting in either the Keyboard Backlight Settings utility or the BIOS, you may need to contact Dell customer support for further assistance. They should be able to help you determine the cause of the issue and provide guidance on how to change the timeout setting.