The folder might have the question mark as Lightroom is not able to find the images from its location.
Please follow the below link to find the images :
If you are still facing any issues, please follow the steps provided in the below link on how to move Lightroom to a new computer.
Move Lightroom to a new computer : http://www.lightroomqueen.com/how-move-lightroom-to-new-computer/
Let me know if this helps.
Thank you. It has helped. Finding missing folders has worked on about a third of my photos. I will keep messing with it.
I love working on my photos in Lightroom; however, only if there are no problems. At that point it becomes as user unfriendly as anything I use - for anything.
Thank you again. Progress is being made.
I will just make a few comments that may help in your getting comfortable with using Lightroom.
"Adobe Photoshop Lightroom" the name assigned to this application has caused new users to be befuddled, confused and frustrated in coming to terms with its use.
a. Lightroom is not "Photoshop" and does not function like Photoshop which is a pixel editing application. (i.e when you save your work in Photoshop it alters the original file, if you do not wish to alter the original file you can then use the "save as" function and a new file will be created with your edits.)
b. The core functions of Lightroom are an alternative to the functions that the Adobe Camera Raw Plugin provides in Photoshop.
c. Lightroom never alters your original files. To begin working with files in Lightroom you first have to "Import" them into Lightroom. Lightroom will import the files and "reference them" in the Catalog File (i.e. It records the data about where there are located and other edits etc that you perform.). If you move the files outside Lightroom then Lightroom will not be able to work with the files.
There are lots of free tutorials available on Adobe TV that you can access to get you up to speed with using the application.