Not sure if this was the correct forum, but here goes.
Have a Windows 7 boot problem, and it was suggested that the first thing to do was try to backup any files I wanted so I didn't lose them. I put a version of Puppy Linux (Xenial) on a stick to boot it up, and I can access my files now. Bought a Lacie external HD, but it needs to be set up. Should I try this on the PC that's affected, or can I do the setup on the laptop I'm using, and then just plug it into the my desktop PC to copy over the files I want?