L.A. Noire is a classic, but its PC port is notorious for the "Synchronizing" hang at the startup screen. This issue is usually tied to outdated networking components or modern hardware compatibility rather than the game files themselves.
The "Synchronizing" loop usually occurs because the game’s connection to the is interrupted or failing. Even in older cracked versions or the "Skidrow" release, the game’s executable often expects a specific response from the Social Club framework to initialize the main menu. When this communication fails, the game hangs indefinitely. 1. Update the Rockstar Games Social Club