There are hundreds of programs running without your knowledge, and you can view them on task manager. So when you want to end a task or a program, make sure to know the consequences. You can do that by right-clicking on the required program and surf the net for it. Then You will know if you want to end it or not. You will also receive a warning and a confirmation box when the task manager believes it to be necessary for the device. Also, know that ending a process unknowingly might cause your system to either crash or lock up.