Hello, I've managed to infect my PC with some annoying adware which pops up adverts all over my browsers. I have Norton AntiVirus running on my Windows 7 laptop and have so far tried scans with Norton Power Eraser, Malwarebytes Ani Malware and SUPERAntispyware which detect adware and remove it but "Positive Finds" keeps coming back whenever I run a browser. Any help would be gratefully appreciated!