No worries. And sorry for not being able to follow up on my earlier post. I am at work and posted on a break. I am now at lunch, and will see if I can join the gang in helping you find your photos.
First let's see if your Windows file explorer can find one of your images. I am still using Windows XP so bear with me since I know that you are on Win7. If you right click on the Start menu, do you get a drop down menu that has "Explore" listed as a selection choice? If so, select it and a file explorer program shsould launch. Using the seach command, try to find one of your images in your LR catalog if you can remember the name of one. If the program finds the file, it will tell you where it is located, also known as the file's "path name". At the beginning of this name is usually a drive letter followed by a colon. This is the drive that contains the file. If you keep your files on the internal drive, there is a good chance that this letter should be "C:". If you are successful at doing this, write down the full path name or take a snapshsot of this window.
Now, open up LR and in the Library module, find the folder where you think that this image should be. Yes, there will be a lot of question marks, but LR should have a thumbnail preview of your images even if it does not know where the actual image is. Select that image and see if LR presents you with where it thinks that image is located as described in the posts above. Then compare that "path name" with the one that windows provided to you as I instructed above. These paths should look similar, but not identical. If so, then post both of the paths and we can guide you and LR to the photo's actual location.
My lunch break is ending soon, so I am sure that somebody else will be able to pick up where I left off. If not, I will try to check in later today.
Good luck,
--Ken