PC infested with many ads after installing Firefox

Hello, I'm CrazyKilla

I've been using Opera for the past year until it recently stopped playing YouTube videos, it would just be a black square, I installed Firefox and it worked fine, until ads started to kick in.

Google has ads
YouTube videos have ads (Not the skip in 5 ones, definitely not ads put there by YouTube)
Half of the words are blue and underlined, which when my mouse hovers over it opens up a box with ads relating to the word

So I uninstalled Firefox, went back to Opera, Now Opera has the same ads, and even worse.

Every web page I open, I only have 3 seconds to click something, after that my mouse cannot interact with anything on the page (E.g. I cannot click images, links and stuff)

Outside of my web browsers are audio ads, playing in the background, I can mute them but they turn back on every start up and whenever I change audio devices.
When I have Opera open, It randomly opens up a webpage full of ads.
Google chrome does not let me use Google, it says that I am connected to some third party browser and not actually Google...

The odd thing is that there is no process in task manager that can be causing the audio ads, it can only be a service. On my start up I only have 4 programs enabled; Steam, utorrent, DisplayFusion and LogMeIn.