Most of us experience slow windows startup after having used a computer for a long time. And for me, half a year is enough to get accustomed to leaving my computer alone after I press the start button, and probably, having a cup of coffee.
Despite the hardware factor (people seldom consider expensive hardware upgrades simply because computer starts up slowly), Windows starts with many other services and applications installed on our computer. And that's why our PC makes us wait until it gets ready with all those known or unknown programs started. Then, where do those programs that automatically start come from?
Where do those auto-start programs come from?
Take an example, when we download and install software, we follow the installation wizard and do what it asks us to do. We just keep clicking Next and Next, and wish that tiring installation process would finish soon. And in that very moment, a piece of prompt just escapes from our eyes and the application succeeds in hiding itself into auto-start programs. After that, whenever we boot computer, that little program just automatically start without greetings!
Things can be worse when some other malicious programs simply set themselves into startup program list without asking for our permission.
Then, here comes the problem: how to remove unneeded start-up applications from Windows and thus, speed up PC boot?

