In general I would say:
(1) On your old computer, copy it to a USB-stick.
(2) From that USB-stick copy it to the new computer.
But it's unclear what files it are and how you try to access them. I've never seen Windows Explorer seen giving a message about a 'list' when clicking it to open it. What kind of files are it, and what list is it?
And, by the way, this seems a good moment to start thinking about BACKUP. With a good backup, you never lose files. People without backup seem to lose data once in a while.