I am running Norton Internet Security 2012. A full system scan detected a threat named Trojan.Zeroaccess.B located in c:\windows\system32\consrv.dll and indicated that manual removal was required. I first rebooted in safe mode and ran the scan again with the same results. I have run the Norton Power Eraser (both regular and beta versions) and the Norton Bootable Recovery Tool but the problem remains. I have noted that Norton also lists a Trojan.Zeroaccess Removal Tool but this only runs in a 32 bit environment. I am running Windows 7 Professional 64 bit. Any suggestions?