Probably the simplest method is to move all of the files from your old computer to a cloud-based service. For many PC users, files can be moved to OneDrive. On a Mac, you can use iCloud. Or use a third-party service, such as Google Drive or Dropbox. “They are device-agnostic and serve as nice repositories,” says James LaCroix, director of the consumer software segment at Lenovo. When you’re all ready to move your files to the new computer, just log in and download them.