How to check the running processes on Windows 2012 Server

Step 1: Log in to your server through a Remote Desktop connection.
Step 2: Hold Ctrl+Shift+Esc or right-click on the Windows bar, and choose Start Task Manager.
Step 3: In Windows Task Manager, click on More details.
Step 4: The Processes tab displays all running processes and their current resources usage.
Step 5: To see all processes executed by an individual user, go to the Users tab (1), and expand User (2).