Okay, I keep getting a pop-up saying that I am infected with a virus (Trojan, worms, etc) but I know very well that my PC is fine after doing almost 10 scans with a reasonably good software that was downloaded after I had a actual virus on my computer 
My question is how do I get rid of this pop-up that showing up now? These pop-ups are probably the closest thing to a virus on my PC right now, so I wanna get rid of them a.s.a.p.
Please help!

My question is how do I get rid of this pop-up that showing up now? These pop-ups are probably the closest thing to a virus on my PC right now, so I wanna get rid of them a.s.a.p.
Please help!