how do you isolate the virus in fallout new vegas?

Answer 1

Within the time limit given, you need to find the 3 computers that are not showing rubbish on screen. There is nothing else to it.

Answer 2

more info about the virus and a walkthrough here : http://fallout.wikia.com/wiki/Hidden_Valley_computer_virus

Answer 3

unfortunately there is no real walkthrough for this. there are no 3 specific computers that the virus will go to. you just have to be quick and try until you get it. move fast, start immediately after he tells you to. you don't necessarily have to move in order to each computer