One of the most convenient aspects of a laptop computer is the ease of transporting it with you. After closing the laptop's lid, you can slide the computer into your bag or tuck it under your arm to quickly change locations. Many laptops, however, are defaulted to turn off or go into "hibernation" once the lid is closed. If you don't wish to go through the hassle of starting up your laptop each time you close the lid, there are some changes you can make to your laptop's settings that will allow the computer to remain functional once the lid is closed.
Click the "Start" button and in the search bar type "power options." The first search result that will come up is "Power Options." Select it. A window will load showing available power plans.
Highlight "High Performance" and click on "Change Plan Settings." Here you can change any settings like brightness and when to set the display to turn off. Click on "Change Advanced Power Settings."
A list of settings will appear. Click the plus sign beside "Power Buttons and Lid" to expand the selection. Click on "Lid Close Action" and change both the "On Battery" and "Plugged In" options to "Do Nothing." Click "OK" to save the setting. Now whether your computer is plugged in or not, the laptop will not power down when the lid is closed.
If you use a Mac operating system, there is no way to configure the computer to stay on when the laptop lid is closed. There are programs you can download that will override the setting, but since Mac laptops release heat through the keyboard, keeping the lid closed while the laptop is on could overheat the computer.