Good luck for the average person with Windows, when their laptop might come with spyware, and sometimes even a complete rootkit, directly from the OEM.

http://www.macnn.com/articles/16/06/01/researchers.show.that...

http://www.zdnet.com/article/lenovo-rootkit-ensured-its-soft...

http://www.makeuseof.com/tag/now-three-pre-installed-malware...