technical difficulties

I was having a problem with my computer so my Father-in -Love fixed it. The problem was fixed but, somehow my picture files were only "tiles" not "thumbnails" and since I mostly post pics with a little text I was stymied. Father-in -Love could not remember changing anything to do with my pics so we couldn't fix it. We were going to chat on the phone while both on the computer to check settings but didn't get to it, before I mentioned to my Father the challenge I was having. He told me what it was and I fixed it! Under "view" "tiles" was selected rather than "thumbnails".