When you start your computer will get different programs notification or they are already processing or starting. That makes your computer bit slower.
When the computer starts slowly and process slowly then I feel frustrated and I think you might also feel the same thing. This tips only works for Windows 7 users because on another version of Windows you will get controller on Taskmanager.
In Windows 7 you can get startup controller in task manager. That's why we follow this method of stopping application running while starting Windows. There are lots of other methods also to handle this problem but this one is pretty simple and best.
Step1: Go run and type "MSCONFIG", without quotes. Press enter or click on Ok.
Step2: You will get Window on your screen.
Step3: After clicking on "Startup" Tab you will see all the applications runs when you start your computer. Here you have to "Uncheck" unnecessary applications and disable them.