I downloaded files from my classes on my computer so I can review them. Now I can't open them, they just open into sub-files. I'm in Health Information Technology program and I will have to take an exam to become licensed. Now, I'm not able to review the files I saved so that I'll pass the exam. For a split second, I can see the actual pages from the file and then it disappears and I get the sub-files. I would appreciate your help. I'm 57 years old, I'm not a "techie" and I need access!