Just wanted to give you a heads up that if you or friends/family are looking to buy a new computer you may want to steer clear of Lenovo. They are installing a trusted certificate so they can see (MiTM) all your traffic so they can target you with ads better. But they are doing this for every site you visit, including your bank so who knows what information they can see.
Here is an okay write-up about it: http://thenextweb.com/insider/2015/02/19/lenovo-caught-installing-adware-new-computers/