system
2
I ran into an issue several months back that the infection prevented me from downloading or installing most any anti-virus program including avast. I found some good info at:
http://forums.cnet.com/7726-4_102-3353065.html#3353065
and
geekstogo.com sorry I don’t have the link any more
In the end, I reformatted and reinstalled from scratch.
good luck