How do I transfer backedup files from old computer, to my new one?

I received my Dell Inspiron 15 7000 series in the mail yesterday, and want to transfer certain files from my older, 2013 HP Pavilion 17in, to it. I have the My Passport Ultra 2Tb (I believe it’s 2). I finished backing up all files from the old computer, about an hour ago. I want to transfer files from a saved game folder, into the new folder on the new computer. But I can see any files when I open the hard drive under My PC.

Hi, it seems that you use Windows utility to backup your files, you might want to take a look at the link below.