It's one of my favorite shows; and I've seen every episode. But, I think the actions of Mr. Nick Stokes and Ray Langston might not hold up in court. Not grabbing volatile memory might be forgiven and certainly isn't a crime. But it certainly might have garnered more evidence. However, actually using the computer while imaging the drive seems to me to be a bit more egregious.
I know, it's just a show. And the plot has to move to fit the hour timeslot. But still. It's a little tough to watch the obvious gaffes. I'm sure the other forensic professions see the issues particular to their discipline.