power eraser used now windows not working right

I had to use Norton Power Eraser to get rid of the FBI MONEYPACK Trojan, and now I cannot get anything to download from IE, which I use. When I try to download Programs, ex...Adobe, Google Chrome or anything, even from Microsoft it stops it and says it is infected with a Virus, even thought Norton comes up and says the downloads are fine. Windows Security, Firewall, and all is not working..Help !! I tried to go to a differnt Restore Point and it will not let Me do that.