you could skip this step if you’re confident the laptop battery has enough charge.
bring up the laptop lid.
Locate and press the power button.

Dell
Wait while the laptop powers on.
Where Is the Power Button on a Dell Laptop?
The power button should be pretty easy to locate no matter what kind of Dell laptop you have.

Dell
Look for a circular or rectangular button below the screen and above the keyboard.
The button could be anywhere along that area but is usually on the right or in the middle.
It’s especially true if the power button is built-in to a touch control bar above the keyboard.

Dell
It will look like nothing is happening for a few moments until the screen suddenly goes dark.
At this point, the laptop will have quit making noise and will be powered down.
However, forcing the laptop to power down isn’t the preferred way to turn it off.

A single press will usually sleep or hibernate the laptop instead.
The best way to shut down a laptop is through the operating system.
Toshut down Windows 10, use the power button in the Start menu and chooseShut down.
Dell Laptop Won’t Power On?
Dell recommends performing a hard reset if the laptop won’t boot into Windows.
Unplug all peripheral devices, like flash drives, USB mice, webcams, etc.
Press and hold the power button for 20 seconds to release any residual power.
Reconnect the battery and power cable.
Try turning on the laptop again by pressing the power button.
SeeHow to Fix a Computer That Wont Turn Onif you need more help.