well, if you reinstalled windows I don't know a way to retrieve all your documents.
I know a way how to get them back without reinstalling the entire windows program, not sure if it will still work now...
Go to start, then help and support.
I have a Dutch computer, so if I translate wrong, forgive me.
Now look under the choose an option tab (just look for undo changes with systemfix or something like that.
You can pick a date then when you still had all info, and normally it should restart then and give you back all the info