In the version of Photos that I'm using on my new computer (Lenovo Yoga 720) I got in April, the app doesn't find any pictures whose name starts with P, which is all the pictures from my camera. It recognizes videos (from camera new and old) and pictures that start with numbers and older pictures starting with "I", but not the pictures I'd actually want to view and edit. I haven't found a solution with some troubleshooting and looking for other people with the same issue. I thought at first it might be a problem with finding pictures in a Google Drive folder (G:/My Drive/Google Drive...) for some reason, but it finds all those files not starting with P. If I change the name of the file and delete the P, Photos finds and can display the picture right away.
Oddly, I had Windows 10 on my prior computer (also a Lenovo Yoga model) and didn't have this issue. Anyone else had this issue or know a solution?