How do you fix the brotherhood of steel virus in fallout new Vegas when trying to find the history

You have to go on every terminal and find 3 virus. To know that you have depleted one, the Terminal should say a taunt, like, "Have you found the other two yet?" Make sure to be quick because the viruses like to jump around every 5 mins, (i think, it could be every 1 min,). When you are finished you have to talk to the Scribe who told you about it.

Note: If you have enough statistic points into the Science stats, you can tell him to change the database of the terminals to just say random gibberish. If you do that, it would be way easier to find the 3 virus's.