Defines the amount of time the screen stays on as long as there is no keypad or scanning activity on the computer.
Options for Screen Turns Off After may be Disabled, 1 minute, 2 minutes, 3 minutes, 4 minutes, 5 minutes, 6 minutes, 10 minutes, 15 minutes, or 30 minutes depending on your computer.
Disabled
Power Management > External Power > Screen Turns Off After