Startup is a folder in Windows in which details of programs that should automatically start after loading the operating system are stored. There might be some essential programs in the system tray and certain Windows elements that must be started for the proper running of the operating system. If too many programs start up after booting, it would slow down the system.

You can run a command called msconfig.exe to find out the entries in the Startup folder. You can deselect any programs that you do not want to start up after booting. One has to be careful while doing this and should not remove any essential Windows components.