Turn Off Monitor Option Missing from Power Management Tool

CAUSE

This issue can occur if your video adapter and your video adapter driver do not support Advanced Configuration and Power Interface (ACPI) power management. The video adapter driver must be ACPI compliant and properly map the control methods which are read by the Acpi.sys file to construct the options that are displayed in the Power Management tool in Control Panel. Note that this problem can occur if you are using an out-of-date video adapter driver, or if the ACPI Control Method description block was improperly implemented.