Ah sherbet. I just typed this out and the page reloaded so here I go again!
How to get your pictures, video, music and documents library back. Library - Include a Folder
Open "My computer", on the left in the quick navigation bar you will see your librarys listed. Documents, Music, Pictures and Videos. If you do not have the quick nav bar, make a plan to see your "pictures" icon.
Right click on "Pictures" -> Click "properties"
see the button "Include a Folder" -> Click it
You now need to locate your "C drive", you should see it in the quick nav bar on the left ("Local Disc C") ->Click it
In here you need to find the "Users" folder (you might have to scroll down) -> Click it
In your users folder find your computer name or your name (Not default or Public) -> Click it
In here find the folder "My pictures". Highlight / Select it (dont go into it)
Click the "Include Folder" button. Apply. Ok. and BAM go check your pictures library, it should be looking healthy.
This method applies to Videos, Music and documents.