If you are constantly seeing popups, advertisements on sites where their shouldn't be, or tech support scams then you are most likely infected with Adware. One of the biggest problems facing computers users is the growing rise of and problems with removing Adware programs. While adware has always been a problem, in the past these programs typically displayed a popup advertisement here and there or displayed advertisements within their own programs, but could be fairly easy to remove.
This article was published first at How to Remove Adware from a PC
Article Link: https://www.bleepingcomputer.com/virus-removal/how-to-remove-adware-on-a-pc