Press Ctrl-Alt-Delete and then Alt-T to open Task Manager's Applications tab. ... When they're all selected, press Alt-E, then Alt-F, and finally x to close Task Manager.

Is it safe to close everything in Task Manager?

Stopping processes with high-resource usage

While stopping a process using the Task Manager will most likely stabilize your computer, ending a process can completely close an application or crash your computer, and you could lose any unsaved data.

How do I know what to close in Task Manager?

Right-click on any of the processes that are not needed to run the Windows operating system, and select "Properties." A window will open giving you a brief description of the process. This information will help you determine whether or not you feel the process is necessary.