How to turn off power on lid open Dell?

Modern Dell laptop computers featuring modern standby architecture are engineered to automatically power on or wake up whenever you open the display lid. If you wish to disable this automatic startup behavior, you can adjust settings within the Dell Power Manager software or modify the BIOS/UEFI configuration. Restart your Dell laptop and tap the F2 key repeatedly during the boot screen to enter the BIOS setup utility. Navigate to the Power Management or Advanced configuration menu, locate the option labeled "Auto On," "Lid Switch," or "Power On Lid Open," and disable or toggle off the setting. Save your configuration changes and exit the BIOS to prevent the laptop from booting up automatically.

Modern Dell laptops running Windows are often configured with features like "Wake on Lid Open" or Modern Standby that keep system power active or trigger a wake event when the display lid is lifted. If you wish to manage or modify how your Dell laptop handles power states regarding lid movement, you can adjust these parameters through the Windows Control Panel or Dell Power Manager software. First, open the Control Panel, navigate to Hardware and Sound > Power Options, and click on "Choose what closing the lid does." While Windows primarily manages closing actions, advanced power settings or your system's BIOS/UEFI firmware settings (accessed by pressing F2 repeatedly during system startup) may contain specific USB power delivery or wake-on features. You can verify success by closing and opening the lid while monitoring system response.