Infected with savepass

I have a paid suscription to Norton Security and thanks to my brother who plugged in an infected usb with the savepass sh...t now my pc is infected and Norton has done nothing to solve this infection, as a matter of fact, it doesn't even detect it.

How the hell do I clean my pc when my AV doesn't even see that when ever I open a browser I see 60 adds per page, pop ups, pop unders, etc.

Opera 26, Chrome and IE completely hijacked by savepass and Norton just idle...

This sucks Symantec...