When you purchase a laptop it comes with some default, pre-installed applications. I personally hate this and it is quicker to format the laptop with a fresh install than go down the route of uninstalling all the <r@p-ware one by one.
Have you ever bought a new Vaio? The amount of extras installed and running in the background take upon most of the resources.
However, this post is about the Lenovo laptops which also contain a number of added "features". One of the added "features" is an adware which activates when taken out of the box for the first time. This adware ships with all consumer PCs from Lenovo and uses a certificate to perform a man-in-the-middle attack in order to inject ads into the user's browser.