The goal is to isolate the cause, and we’ll proceed by the method of elimination. The ads might be effective within several browsers, or may be active on a single specific one. The first thing you should find out is whether the Adware program resides within your browsers. Here is what you should do: Browser Level Investigation There could be a lot of reasons why your browser is showing unwanted ads.
The first step in the right direction would be to consider the possible causes.