If "pauldll" is a specific YouTuber or blogger you’ve seen, could you provide more context on where you heard the name? I can then look for a more like YouTube or a gaming forum.
Fable III was officially delisted from Steam in 2013 because it relied on the GFWL marketplace, which has since shut down.
Before jumping into fixes, it is important to understand what you are dealing with. Paul.dll is not a standard Windows system file (like kernel32.dll ). Instead, it is a third-party component.